DM13H

Version : A.004
Issue Date : 2014/09/16
File Name : SP-DM13H-A.004.doc
Total Pages : 26

16-Channel Constant Current LED Driver

with Error Detection

新竹市科學園區展業一路 9 號 4 樓之 3
SILICON TOUCH TECHNOLOGY INC.
9-7F-1, Prosperity Road I, Science Based Industrial Park,
Hsin-Chu, Taiwan 300, R.O.C.
Tel：886-3-5645656 Fax：886-3-5645626
 DM13H

DM13H
16-Channel Constant Current LED Driver
With Error Detection
General Description

DM13H is a 16-channel constant-current sink driver specifically designed for LED

display applications. The device incorporates shift registers, data latches, and constant
current circuitry on the silicon CMOS chip. The maximum output current of each channel is
set by a single external resistor. Overall output currents can be adjusted by a 7-bit serial
shift-in data. Its built-in LED open/short detection, output channels short to GND detection
help users to detect LED failures, outputs short. The thermal alarm and shutdown functions
provide the over-temperature protection.

Features
z 16-Channel Constant-current outputs: 3mA to 90mA adjustable by one external resistor
z Maximum output voltage: 17V
z Maximum cascade clock frequency: 25MHz
z 7-bit linear global brightness control
z Built-in LED open/short detection: Real-time detection or Smart detection
z Built-in Outputs short to GND detection: Real-time or Smart detection
z Fast detecting response: 100ns (min.)
z Over temperature protection: Alarm (junction temperature > 130°C)
Shutdown (junction temperature > 170°C)
z Sleep mode (sleep current : 5uA)
z In-rush current control
z Schmitt trigger input
z Power supply voltage: 3.0V to 5.5V
z Package pin assignment compatible to conventional LED drivers (DM134B/5B,DM13C)

Applications
z LED Variable Message Signs (VMS) System
z Indoor/Outdoor LED Video Display

Packages
SOP24, SSOP24, TSSOP24E, SOP24B, QFN24

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 DM13H

Block Diagram

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 DM13H

Pin Connection (Top View)

SOP24 / SSOP24 / TSSOP24E / SOP24B QFN24

GND 1 24 VCC
DAI 2 23 REXT
CLK 3 22 DAO
LAT 4 21 EN
OUT0 5 20 OUT15
OUT1 6 19 OUT14
OUT2 7 18 OUT13
OUT3 8 17 OUT12
OUT4 9 16 OUT11
OUT5 10 15 OUT10
OUT6 11 14 OUT9
OUT7 12 13 OUT8

Pin Description

PIN No. PIN NAME FUNCTION

SOP24 / SSOP24 / TSSOP24E / SOP24B: 1

GND Ground terminal.
QFN24: 22

SOP24 / SSOP24 / TSSOP24E / SOP24B: 2

DAI Serial data input terminal.
QFN24: 23

Synchronous clock input terminal for serial data

SOP24 / SSOP24 / TSSOP24E / SOP24B: 3
CLK transfer.
QFN24: 24
Data is sampled at the rising edge of CLK.
Input terminal of data strobe.
SOP24 / SSOP24 / TSSOP24E / SOP24B: 4
LAT Data on shift register goes through at the rising
QFN24: 1
edge (edge trigger). Otherwise, data is latched.

SOP24 / SSOP24 / TSSOP24E / SOP24B: 5~20

OUT0~15 Sink constant-current outputs (open-drain).
QFN24: 2~17

Output enable terminal:

SOP24 / SSOP24 / TSSOP24E / SOP24B: 21
EN ‘H’ for all outputs are turned off ,
QFN24: 18
‘L’ for all outputs are active.

SOP24 / SSOP24 / TSSOP24E / SOP24B: 22

DAO Serial data output terminal.
QFN24: 19

SOP24 / SSOP24 / TSSOP24E / SOP24B: 23 External resistors connected between REXT and
REXT
QFN24: 20 GND for output current value setting.

SOP24 / SSOP24 / TSSOP24E / SOP24B: 24

VCC Supply voltage terminal.
QFN24: 21

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 DM13H

Equivalent Circuit of Inputs and Outputs

1.CLK, DAI, LAT , EN terminals ( Schmitt Trigger Input )

2. DAO terminals

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 DM13H

Maximum Ratings (Ta=25°C, Tj(max) = 150°C)

CHARACTERISTIC SYMBOL RATING UNIT
Supply Voltage VCC -0.3 ~ 7.0 V
Input Voltage VIN -0.3 ~ VCC+0.3 V
Output Current IOUT 90 mA
Output Voltage VOUT -0.3 ~ 17 V
Input Clock Frequency FCKI 30 MHz
GND Terminal Current IGND 1500 mA
1.5 (SSOP24)
Power Dissipation PD W
2.8 (TSSOP24)
85 (SSOP24)
Thermal Resistance Rth(j-a) °C/W
45 (TSSOP24E)
Operating Temperature Top -40 ~ 85 °C
Storage Temperature Tstg -55 ~ 150 °C

Recommended Operating Condition

CHARACTERISTIC SYMBOL CONDITION MIN. TYP. MAX. UNIT
Supply Voltage VCC ⎯ 3.0 ⎯ 5.5 V
*1
Output Voltage VOUT Driver Off ⎯ ⎯ 17 V
IO OUTn, VCC=5V 3 ⎯ 90
Output Current IOH VOH = VCC – 0.2 V ⎯ ⎯ +1.5 mA
IOL VOL = 0.2 V ⎯ ⎯ -1.5
VIH 0.7VCC ⎯ VCC
Input Voltage VCC = 3.3 V ~ 5V V
VIL 0.0 ⎯ 0.3VCC
Single Chip Operation 30
Input Clock Frequency FCKI ⎯ ⎯ MHz
Cascade Operation ⎯
LAT Pulse Width tw LAT 15 ⎯ ⎯
CLK Pulse Width tw CLK 13 ⎯ ⎯
EN Pulse Width tw EN 50 ⎯ ⎯
Set-up Time for DAI tsetup(D) VCC = 5.0V 10 ⎯ ⎯ ns
Hold Time for DAI thold(D) 10 ⎯ ⎯
Set-up Time for LAT tsetup(L) 10 ⎯ ⎯
Hold Time for LAT thold(L) 10 ⎯ ⎯
LAT Pulse Width tw LAT 15 ⎯ ⎯
CLK Pulse Width tw CLK 13 ⎯ ⎯
EN Pulse Width tw EN 50 ⎯ ⎯
Set-up Time for DAI tsetup(D) VCC =3.3V 12 ⎯ ⎯ ns
Hold Time for DAI thold(D) 8 ⎯ ⎯
Set-up Time for LAT tsetup(L) 8 ⎯ ⎯
Hold Time for LAT thold(L) 12 ⎯ ⎯

*1
The driver output voltage including any overshoot stress has to be compliant with the maximum voltage (17V).

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 DM13H

Electrical Characteristics (VCC = 5.0 V, Ta = 25°C unless otherwise noted)

CHARACTERISTIC SYMBOL CONDITION MIN. TYP. MAX. UNIT

Input Voltage “H” Level VIH CMOS logic level 0.7VCC ⎯ VCC
V
Input Voltage “L” Level VIL CMOS logic level GND ⎯ 0.3VCC

Output Leakage Current IOL VOH = 17 V ⎯ ⎯ +1 uA

VOL IOL = -1.5 mA ⎯ ⎯ 0.2

Output Voltage (S-OUT) V
VOH IOH= 1.5 mA VCC-0.2 ⎯ ⎯

Output Current Skew

*1 IOL1 ⎯ ⎯ ±4 %
(Channel-to-Channel) VOUT = 1.0 V
Rrext = 3.9 KΩ
Output Current Skew
*2 IOL2 ⎯ ⎯ ±6 %
(Chip-to-Chip)
Rrext = 3.9 KΩ
Output Voltage Regulation % / VOUT ⎯ ±0.1 ±0.5
VOUT = 1 V ~ 3 V %/V
Supply Voltage Regulation % / VCC Rrext = 3.9 KΩ ⎯ ±1 ±4
Differential Linearity DNL Rrext = 3.9 KΩ ⎯ ±1.2 LSB
Output Voltage Short to GND,
V(od) output turns on ⎯ 0.1 ⎯ V
LED Open Detection Threshold

LED Short Detection Threshold*3 SV = ”H” ⎯ VCC ⎯ V

(output turns on) V(sd)
SV = ”L” ⎯ 5/6VCC ⎯ V

T(130) ⎯ 130 ⎯
Thermal Threshold
T(170) junction temperature ⎯ 170 ⎯ °C
Thermal Shutdown Threshold T(sht) ⎯ 170 ⎯
power on
IDD(off) all pins are open ⎯ 1.2 ⎯
unless VCC and GND
Rrext = 3.9 KΩ
IDD(off) ⎯ 7
all outputs turn off
Rrext = 3.9 KΩ mA
Supply Current IDD(on) ⎯ 7.6 ⎯
all outputs turn on
(Input signal is static)
Rrext = 820 Ω
IDD(off) ⎯ 27.5
all outputs turn off
Rrext = 820 Ω
IDD(on) ⎯ 30 ⎯
all outputs turn on
IDD(sleep) Sleep current ⎯ 5 uA

*1
Channel-to-channel skew is defined as the ratio between (any Iout – average Iout) and average Iout,
where average Iout = (Imax + Imin) / 2.
*2
Chip-to-Chip skew is defined as the range into which any output current of any IC falls.
*3
LED short detection voltage level default value is VCC , refer to Page 12 for level selection.

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 DM13H

Switching Characteristics (VCC = 5.0V, Ta = 25°C unless otherwise noted)

CHARACTERISTIC SYMBOL CONDITION MIN. TYP. MAX. UNIT

EN -to-OUT0 14 26 36
Propagation Delay
LAT -to-OUT0 tpLH VIH = VCC 19 31 41
(‘L to ‘H’)
CLK-to-DAO VIL = GND 15 19 23

EN -to-OUT0 19 31 41
Propagation Delay Rrext = 3.9 KΩ
LAT -to-OUT0 tpHL 19 32 41
(‘H’ to ‘L’) VL = 5.0 V ns
CLK-to-DAO 16 20 24
RL = 0.18 KΩ
Output Current Rise Time tor 4.5 10 18
CL = 13 pF
Output Current Fall Time tof 4.5 10 18
Output Delay Time (OUT(n)-to-OUT(n+1)) tod 0.5 3 5.5
Detection Response tdet 20 100 120

Switching Characteristics (VCC = 3.3V, Ta = 25°C unless otherwise noted)

CHARACTERISTIC SYMBOL CONDITION MIN. TYP. MAX. UNIT

EN -to-OUT0 16 36 46
Propagation Delay
LAT -to-OUT0 tpLH VIH = VCC 21 37 47
(‘L to ‘H’)
CLK-to-DAO VIL = GND 18 22 26

EN -to-OUT0 19 35 41
Propagation Delay Rrext = 3.9 KΩ
LAT -to-OUT0 tpHL 19 37 41
(‘H’ to ‘L’) VL = 5 V ns
CLK-to-DAO 19 23 27
RL = 0.18 KΩ
Output Current Rise Time tor 7.5 14 21
CL = 13 pF
Output Current Fall Time tof 7.5 14 21
Output Delay Time (OUT(n)-to-OUT(n+1)) tod 0.7 3 6.5
Detection Response tdet 20 100 120

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 DM13H

Timing Diagram
1. CLK-DAI, DAO
twDCK twDCK

DCK 50% 50% 50% 50%

t setup(D) thold(D)

DAI 50% 50%

DAO 50% 50%

tpLH tpHL

2. CLK- LAT

CLK 50% 50%

t setup(L) t hold(L)

LAT 50% 50%

twLAT

3. LAT -OUT0

50% 50%

LAT
t or tof

90% 90%
50% 50%

OUT0 10% 10%

(current) t pLH t pHL

4. EN -OUT0
t wEN

EN 50% 50%

tor tof
90% 90%
50% 50%
10% 10%

OUT0 t pLH
(current) t pHL

5. OUTn+1-OUTn

OUTn+1 50%
(current)

tod

OUTn 50%
(current)

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 DM13H

Constant-Current Output
Constant-current value of each output channel is set by an external resistor connected
between the REXT pin and GND. Varying the resistor value can adjust the current scale
ranging from 3mA to 90mA. The reference voltage of REXT terminal (Vrext) is
approximately 1.23V. The output current value is calculated by the following equation:

90
80
V rext (V)
70 Iout (mA) ~ × 65
Rrext (KΩ)
60
IOUT(mA)

50
40
30
20
10
0
1 2 3 4 5 6 7 8 9 10
Rext (K)

In order to obtain a good performance of constant-current output, a suitable output voltage

is necessary. Users can get related information about the minimum output voltage below.

100
90
80
70
60
IOUT(mA)

50
40
30
20
10
0
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.6 2.8 3
VOUT(V)

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 DM13H

Serial Data Interface

DM13H includes a flexible data transfer interface. The data can be transferred from DAI
pin to the shift registers at the rising edge of CLK. After all data are clocked in, a rising edge
of the LAT signal can transfer the serial data to the data latches (Edge trigger). The serial
data format can be 16-bit or 10-bit wide, depending on the operating mode of the device.

Operation Mode
DM13H has two operating modes depending on the combination of CLK and LAT
signals. The table below shows the available operating modes. For normal operation (SD
mode), the data width of shift register is 16-bit, which is used to set 16 bits serial-in image
data. The sequence of the combination of CLK and LAT explains in following pages is
used to change the operation mode. If there are four triggering clock pulses (CLK) with high
level latch ( LAT ), DM13H will change to command data input mode (CD mode) at falling
edge of the latch pulse ( LAT ) then user can make ten triggering clock pulses to set 7-bit
GBC data (default value after power-on is 7’b1000000), 1-bit voltage level selection of short
detection (default value after power-on is 1’b1) and 1-bit sleep control data (default value is
1’b0)

OPERATION MODE SHIFT REGISTER

Serial-in Data Input Mode (SD mode) 16-bit

Command Data Input Mode (CD mode) 10-bit

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 DM13H

SD Mode Data Format

MSB LSB
15 14 13 12 11 4 3 2 1 0
OUT15 OUT14 OUT13 OUT12 OUT11 ‧‧‧ OUT4 OUT3 OUT2 OUT1 OUT0
Shift-in first

When DM13H operates at SD mode, the serial-in data (DAI) will be clocked into 16-bit
shift register synchronized on the rising edge of the clock (CLK). The data ‘1’ represents the
corresponding current output ‘ON’, while the data ‘0’ stands for ‘OFF’. The data will be
transferred into the 16 bit latch synchronized on the rising edge of the strobe signal ( LAT );
otherwise, the output data won’t be changed. The latch pulse should be sent after the falling
edge of the last clock within a frame data.
0 1 2 3 13 14 15 0 1 2
0
CLK 1

high
DAI low

0
DAO previous data
1
Tsetup (L)
high
LAT low
0
EN 1

on
OUT 0 off
(current)
on
OUT 1 off
(current)
on
OUT 2 off
(current)
. .
. .
. .
on
OUT12 off
(current)
on
OUT13 off
(current)
on
OUT14 off
(current)
on
OUT15 off
(current)

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 DM13H

CD Mode Data Format

a. Global Brightness Control

DM13H offers a convenient way to fine tune the whole chip output currents for the
uniformity of brightness between modules, ICs or the accomodation to ambient light. To
further adjust the current level linearly, the system shall enter the CD MODE and then shift
in 7-bit GBC data code through DAI pin. The MSB should be shifted-in first. Take the input
code. G[6:0]= (MSB)1001011(LSB) for example. The new current is then equal to the base
current multiplied by the ratio (26 + 23 + 21 + 20 + 1) 128 . The 7-bit data won’t be changed until the
next new data is latched. Note that the default code 7’b1000000 exists in chip memory
when power on, so the output current is equal to the half of base current.

b. Short detection voltage level selection

DM13H provides 2 voltage levels in coordination with LED short detection on system.
VCC voltage level is the default value while power-on. DAO will send an error signal = H if
the output voltage is greater than a respectively predetermined threshold value.
SV Short Voltage
0 5/6 * VCC
1 VCC (default)
c. Sleep mode
When SLP=1, DM13H will enter sleep mode, all outputs turn off and the IDD of DM13H
will drop down to less than 5uA. This function is especially designed for battery or solar
powered system.

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 DM13H

Error Detection
DM13H includes Real-time and Smart detection mode for LED open/short and driver
outputs short to GND detection. It can be set as six types which are showing as following
table.

Detection Type Detection Operation

Real time LED Open Detection CLK rising edge x1, with LAT =H
Real time Output Short to GND Detection CLK rising edge x2, with LAT =H
Real time LED Short Detection CLK rising edge x3, with LAT =H
CLK rising edge x1, with LAT =H
Smart LED Open Detection
then LAT falling edge x2 with CLK=H
CLK rising edge x2, with LAT =H
Smart Output Short to GND Detection
then LAT falling edge x2 with CLK=H
CLK rising edge x3, with LAT =H
Smart LED Short Detection
then LAT falling edge x2 with CLK=H

Selection of detection types is a collocation of CLK and LAT . After detection executed,
the error report will be saved in the particular shift register and could be retrieved from
serial-out(DAO) data.
For Real-Time LED open/short detections, it’s necessary to set the image data of the
particular output channel as ‘1’. The serial-out data is ‘0’ in the LED normal state, and the
serial-out data will be ‘1’ while a LED failure has occurred. If the image data is written to “0”
or the output terminal is inactive (EN =H), it will not execute any detection process for the
corresponding channel. Therefore, the serial-data will remain as “0”.
For Real-Time Output Short to GND detection type, set the image data of the particular
output channel to ‘0’, outputs’ state will be identified from DAO as above. In output normal
state, the serial-out data is ‘0’, but if the serial-out data is ‘1’ then a DM13H output voltage
lower than 0.1V. If the image data of particular channel is ‘1’, no detection will be executed
for the corresponding channel, and the serial-out data will be ’0’. Otherwise, If output enable
terminal is active (EN =’L’), the serial-out data will be ’0’.
DM13H specializes in fast detection response, 100ns minima. Moreover, it offers multi
selections like Real-Time monitor and Smart detection. Accordingly, it is more flexible and
well adapted to the system requirements.

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 DM13H

a. Normal operation
When DM13H operates at normal operation (Latch only) the DAO pin will send out the
original serial-in data not the error message.

SD mode

1
DAI J [2] J [1] J [0] Don＇care
t L[15] L[14] L[ 0 ] Don＇care
t M[15 ] M[14 ] M[13]
0

14 15 16
Normal operation 1 2 16 1 2 3
high
CLK
low

high
LAT
l ow

1
DAO I [2] I [1] J [15] J [14] L [15 ] L [14 ] L [13 ]
0

on
OUT0 Fr ame Data I Fr ame Data J Frame Data L
(current ) off

b. LED Open/Short Detection(Real-time)

Set one CLK rising edge with LAT =‘H’ to operate Open Real-Time detection. Each
channel will be identified as a LED open failure when there is a current passing through the
output but the voltage is below 0.1V.
LED Open
Real Time
SD Mode Detection Mode SD Mode

1
DAI J [2] J [1] J [0] Don＇care
t L[15] L[14] L[ 0 ] Don＇care
t M[15 ] M[14 ] M[13 ]
0

14 15 16 1 1 2 16 1 2 3
High
CLK Low

LAT 0

tDET
High
DAO I [2] I [1] I [0] E [15 ] E [14 ] L [15 ] L [14 ] L [13 ]
Low

On
OUT0 Fr ame Data I Fr ame Data J Frame Data L
(current ) Off

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 DM13H

Set three CLK rising edges with LAT =‘H’ to operate Short Real-Time detection. A LED
short failure will be identified when the output channel is on and the output voltage is higher
VCC.
LED Short
Real Time
SD Mode Detection Mode SD Mode

1
DAI J [2] J [1] J [0] Don＇care
t L [15] L[14] L[ 0 ] Don＇care
t M [15] M[14] M[13]
0

14 15 16 1 2 3 1 2 16 1 2 3 High

CLK Low

LAT 0

tDET
High
DAO I [2] I [1] I [0] E [15 ] E [14 ] L [15 ] L[14] L[13]
Low

On
OUT0 Frame Data I Frame Data J Frame Data L
(current ) Off

With the above operating principle, the controller could continuously retrieve LED
status from serial-out(DAO) then compare with the last frame date one by one . Once there
is any serial-out data at ’1’ be retrieved, it pinpoints the channel with failed LED. Since the
process is ongoing and without shifting between image and detection mode, it does not
interrupt the image data flow and the output display. This is known as “Real-Time Monitor”.

c. LED Open/Short Detection (Smart Detection)

DM13H also specially provides another ”smart” detection method. In Smart detection
mode, DM13H will automatically turns on all output channels with Iout=50uA until the next
rising edge of the CLK pulse. After the rising edge of CLK, the output current will return to
original state. Notice that enable control (EN ) won’t affect smart detection result.
Set one CLK rising edge with LAT =‘H’ then two LAT falling edges with CLK is ‘H’ to
operate Open Smart detection. Each channel will be identified as a LED open failure when
there is a current passing through the output but the voltage is below 0.1V.
LED Open
SD Mode Smart Detection Mode SD Mode

1
DAI J [2] J [1] J [0] Don＇care
t L[15] L[14] L[ 0 ] Don＇care
t M[15] M[14] M[13 ]
0

14 15 16 1 1 2 16 1 2 3
High
CLK Low

1 2 1

LAT 0

tDET
High
DAO I [2] I [1] I [0] E [15 ] E [14 ] L [15 ] L [14 ] L [13 ]
Low

On
OUT0 Frame Data I Frame Data J Frame Data L
(current ) Off

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 DM13H

Set three CLK rising edges with LAT =‘H’ then two LAT falling edges with CLK is ‘H’ to
operate Short Smart detection. A LED short failure will be identified when the output channel
is off and there is a current passing through the output but the voltage is above VCC.
LED Short
SD Mode Smart Detection Mode SD Mode

1
DAI J [2] J [1] J [0] Don＇care
t L[15] L[14] L[ 0 ] Don＇care
t M[15 ] M[14 ] M[13 ]
0

14 15 16 1 2 3 1 2 16 1 2 3
High
CLK Low

1 2 1

LAT 0

tDET
High
DAO I [2] I [1] I [0] E [15 ] E [14 ] L [15 ] L [14 ] L [13 ]
Low

OUT0 Frame Data I Frame Data J Frame Data L

On

(current ) Off

The error report of LED status will be retrieved from DAO. Once there is any serial-out
data at ’1’ be retrieved, controller can counts clocks to identify the locations of fail LED. The
impression of “invisible failure detection” is achievable because of less data clock-in cycle
and small current during detection to avoid a flash. After Smart detection, DM13H will return
to normal operation until next detection.
d. Outputs Short to GND Detection (Real-Time/Smart)
This error detection mode could detect the failure of IC and PCB. If IC output pins are
burned-out or output pins on PCB layout are short to ground, the voltage of IC output pins
would be pulled to low voltage. It will make LEDs turn on all the time. Therefore, DM13H
would determine the failure of IC output pins when the output voltage is below 0.1V. For the
duration of output short to GND smart detection, the output would be turned off
automatically and pulled high to VDD no matter channel is on or off.
Set two CLK rising edges with LAT =‘H’ to operate Output Short to GND Real-Time
detection. An output short failure will be identified when the output turn off but the voltage is
below 0.1V.
Output Short to GND
Real Time
SD Mode Detection Mode SD Mode

1
DAI J [2] J [1] J [0] Don＇care
t L[15] L[14] L[ 0 ] Don＇care
t M[15] M[14] M[13]
0

14 15 16 1 2 1 2 16 1 2 3 High

CLK Low

LAT 0

tDET
High
DAO I [2] I [1] I [0] E [15 ] E [14 ] L [15 ] L [14 ] L [13 ]
Low

On
OUT0 Fr ame Data I Fr ame Data J Fr ame Data L
(current ) Off

16-Channel Constant Current LED Driver with Error Detection Version:A.004 Page 16
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 DM13H

Set two CLK rising edges with LAT =‘H’ then sending two LAT falling edges with CLK
is ‘H’ to operate Output Short to GND Smart detection. DM13H will force all outputs to turn
off automatically, and start to detect output short error until the next rising edge of CLK pulse.
After the rising edge of CLK, the output current will return to original value. After the
detection, device will return to Normal Operation. Notice that enable control (EN ) won’t
affect smart detection result.

Output Short to GND

SD Mode Smart Detection Mode SD Mode

1
DAI J [2] J [1] J [0] Don＇care
t L[15] L[14] L[ 0 ] Don＇care
t M[15 ] M[14 ] M[13 ]
0

14 15 16 1 2 1 2 16 1 2 3
High
CLK Low

1 2 1

LAT 0

tDET
High
DAO I [2] I [1] I [0] E [15 ] E [14 ] L [15 ] L [14] L [13 ]
Low

On
OUT0 Frame Data I Frame Data J Frame Data L
(current ) Off

Outputs Delay
Large in-rush currents will occur when the system activates all the outputs at once. To
prevent this effect, a constant unit of delay between outputs is built-in DM13H. All outputs
are divided into four groups and each group contains four outputs. For example, OUT0 ~
OUT3 form the group1; OUT4 ~ OUT7 form the group2. There is no delay between every
group. But each output delay between channels in a group is 3ns @VDD=3.3V (typical).

OUT 0, 4, 8,12

OUT 1, 5, 9,13

OUT 2, 6, 10,14

OUT 3, 7, 11,15

tod tod tod tod tod tod

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 DM13H

Thermal Alarm and Shutdown

DM13H provides a temperature error detection circuit for thermal alarm and shutdown
protection. When junction temperature of the IC exceeds 130℃, the thermal flag(T130) will
be serial-out in the CD mode. If no cooling measures to reduce the temperature(by system),
the junction temperature might continue to rise. Once it reaches to 170℃, DM13H will turn
off all outputs. When the junction temperature is lower than 130℃, DM13H will restart
automatically. Operation in the over-temperature situation( > 130℃) for a long time may
cause chip damage permanently.

Thermal Flag Description

130℃ temperature flag
T130
"H" : Temp ≧ 130℃, “ L” : Temp < 130℃
170℃ temperature flag
T170
"H" : Temp ≧ 170℃, “L” : Temp < 170℃
Shutdown Flag
Tshut
"H" : 16 outputs off, “L” : normal operation

Normal

Normal T130=1
130 C 170 C

Normal T130=1 Tshut=1

Normal T170=0,Tshut=1 T170=1

In CD mode, thermal flags will be serial-out through DAO. According to these thermal
flags, the control system can adopt proper way to protect whole display system. Please note
the thermal flags are all ‘L’ in normal operation.
SD mode

CD mode transfer CD mode SD mode

1
DAI DA[2] DA [1] DA [0] GBCA [6] GBCA [5] SVA [1] SVA [0] SLPA DB[15] DB[14] DB [1] DB [0]
0

1 2 15 16
high
LAT
low

15 16 1 2 3 4 1 2 8 9 10
high
DCK
l ow

1
DAO D Z[0] DA [15] GBC Z [6] GBCZ [5] SHUT Z T130 Z T170 Z DA [ 15 ] D A [14 ] D A [13 ] D A [0] D B [15]
0

on
OUT0 Fr ame Data Z Fr ame Data Aa Frame Data A*1
(current ) off

*1 The difference between Frame data A and Aa is the max output current.

16-Channel Constant Current LED Driver with Error Detection Version:A.004 Page 18
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 DM13H

Power Dissipation
Notice that the power dissipation of a semiconductor chip is limited to its package and
ambient temperature, in which the device requires the maximum output current calculated
for given operating conditions. The maximum allowable power consumption can be
calculated by the following equation:
Tj(junction temperature)(max)(°C)– Ta(ambient temperature)(°C)
Pd(max)(Watt) =
Rth(junction-to-air thermal resistance)(°C/Watt)
The relationship between power dissipation and operating temperature can be refer to the
figure below:

PD - Ta curve

3
TSSOP24E
2.5
Power Dissipation Pd(W)

2
SSOP24
1.5

0.5

0
0 20 40 60 80 100 120 140 160

Ambient Temperature Ta ( ℃ )

The power consumption of IC can be determined by the following equation and should
be less than the maximum allowable power dissipation:

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 DM13H

Package Outline Dimension

SOP24

Dimensions in mm

Symbol MIN. TYP. MAX.

A - - 2.650

A1 0.100 - 0.300

A2 2.050 - -

b 0.310 - 0.510

c 0.200 - 0.330

D 15.240 - 15.700

E1 7.500 BSC

e 1.270 BSC

E 10.300 BSC

L1 1.40 REF

L 0.400 - 1.270

θ° 0 - 8

16-Channel Constant Current LED Driver with Error Detection Version:A.004 Page 20
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 DM13H

Package Outline Dimension

SSOP24

Dimensions in inch Dimensions in mm

Symbol MIN. TYP. MAX. MIN. TYP. MAX.

A 0.053 0.064 0.069 1.346 1.626 1.753

A1 0.004 0.006 0.01 0.102 0.152 0.254

A2 - - 0.059 - - 1.499

b 0.008 - 0.012 0.203 - 0.305

C 0.007 - 0.01 0.178 - 0.254

D 0.337 0.341 0.344 8.56 8.661 8.738

E 0.228 0.236 0.244 5.791 5.994 6.198

e 0.025 BSC 0.635 BSC

E1 0.15 0.154 0.157 3.81 3.912 3.988

L 0.016 0.025 0.05 0.406 0.635 1.27

L1 0.041 BSC 1.041 BSC

θ° 0 - 8 0 - 8

16-Channel Constant Current LED Driver with Error Detection Version:A.004 Page 21
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 DM13H

Package Outline Dimension

TSSOP24E

Dimensions in inch Dimensions in mm

Symbol MIN. TYP. MAX. MIN. TYP. MAX.
A - - 0.047 - - 1.2
A1 0 - 0.006 0 - 0.15
A2 0.031 0.039 0.041 0.8 1 1.05
b 0.007 - 0.012 0.19 - 0.3
D 0.303 7.8 0.311 7.7 7.8 7.9
E1 0.169 4.4 0.177 4.3 4.4 4.5
E 6.400 BSC 6.400 BSC
e 0.650 BSC 0.650 BSC
L1 1.000 REF 1.000 REF
L 0.018 4.4 0.03 0.45 0.6 0.75
S 0.008 - - 0.2 - -
θ° 0 - 8 0 - 8
PAD SIZE2
(112×18E)
E2 0.09 - 0.112 2.28 - 2.85
D1 0.146 - 0.182 3.7 - 4.62

16-Channel Constant Current LED Driver with Error Detection Version:A.004 Page 22
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 DM13H

Package Outline Dimension

SOP24B

16-Channel Constant Current LED Driver with Error Detection Version:A.004 Page 23
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 DM13H

Package Outline Dimension

QFN24

DIMENSION DIMENSION
SYMBOL (MM) (MIL)
MIN. NOM. MAX. MIN. NOM. MAX.
A 0.70 0.75 0.80 27.6 29.5 31.5
A1 0 0.02 0.05 0 0.79 1.97
A3 0.203 REF 8 REF
b 0.18 0.25 0.30 7.09 9.84 11.81
D 3.90 4.00 4.10 153.5 157.5 161.4
D2 1.90 2.00 2.10 74.8 78.7 82.7
E 3.90 4.00 4.10 153.5 157.5 161.4
E2 1.90 2.00 2.10 74.8 78.8 82.7
e 0.50 BSC 19.69 BSC
L 0.30 0.40 0.50 11.8 15.7 19.7
y 0.08 3.15

16-Channel Constant Current LED Driver with Error Detection Version:A.004 Page 24
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 DM13H

The products listed herein are designed for ordinary electronic applications, such
as electrical appliances, audio-visual equipment, communications devices and so
on. Hence, it is advisable that the devices should not be used in medical
instruments, surgical implants, aerospace machinery, nuclear power control
systems, disaster/crime-prevention equipment and the like. Misusing those
products may directly or indirectly endanger human life, or cause injury and
property loss.

Silicon Touch Technology, Inc. will not take any responsibilities regarding the
misusage of the products mentioned above. Anyone who purchases any products
described herein with the above-mentioned intention or with such misused
applications should accept full responsibility and indemnify. Silicon Touch
Technology, Inc. and its distributors and all their officers and employees shall
defend jointly and severally against any and all claims and litigation and all
damages, cost and expenses associated with such intention and manipulation.

Silicon Touch Technology, Inc. reserve the right to make changes to their products
or to discontinue any product or service without notice, and advise customers to
obtain the latest version of relevant information to verify, before placing orders,
that information being relied on is current and complete.

16-Channel Constant Current LED Driver with Error Detection Version:A.004 Page 25
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