Datasheet

Voltage Mode PWM Controller SDC7500

General Description Features

The SDC7500 is a voltage mode pulse width modulation
switching regulator control circuit designed primarily for


Complete PWM power control circuitry
Uncommitted outputs for 200mA sink or source T
power supply control.

The SDC7500 consists of a reference voltage circuit, two


current

E N
Output control for single ended or push pull
operation
error amplifiers, an on-chip adjustable oscillator, a
dead-time control (DTC) comparator, a pulse-steering

M
Internal regulator provides a stable 5V reference

control flip-flop, and an output control circuit. The


supply with 5% tolerance
U
Adjustable dead-time control
precision of voltage reference (V REF ) is ±1% through
trimming and this provides a better output voltage
 Package: DIP-16
C
regulation. The SDC7500 provides for push-pull or Applications
O
single-ended output operation, which can be selected
through the output control.

D
PC power supply


A L
DC-DC convertor

T I
E N
I D
F
N
O
C
C DIP-16

S D Figure 1. Package Type

August, 2016 Rev. 1.2 1/10

©2013 Shaoxing Devechip Microelectronics Co., Ltd. www.sdc-semi.com
 Datasheet
Voltage Mode PWM Controller SDC7500

Pin Configuration

Package: DIP-16
T
VIN1+ 1 16 VIN2+

E N
M
VIN1- 2 15 VIN2-

U
COMP 3 14 VREF

4 13

C
DEAD CTRL

CT 5 12 VCC

RT 6 11 C2 O
GND 7 10 D
E2

C1 8

A L 9 E1

T I
Figure 2. Pin Configuration

Pin Number
1
E
VIN1+
N
Pin Name Function
Amplifier positive input
2
3
I D VIN1-
COMP
Amplifier negative input
Compensation pin
4
F DEAD Dead time control
5
6 N CT
RT
Oscillate capacitor pin, external timing capacitor
Oscillate resistor pin, external timing resistor
7
O GND Ground
8
9 C C1
E1
Output transistor collector
Output transistor emitter

C 10 E2 Output transistor emitter

S D 11
12
13
C2
VCC
CTRL
Output transistor collector
Power supply pin
Output control pin
14 VREF Reference pin
15 VIN1- Amplifier negative input
16 VIN2+ Amplifier positive input

Table 1. Pin Configuration

August, 2016 Rev. 1.2 2/10

©2013 Shaoxing Devechip Microelectronics Co., Ltd. www.sdc-semi.com
 Datasheet
Voltage Mode PWM Controller SDC7500

Functional Block Diagram

CTRL
13 T
RT 6
T Q
N
8 C1

E
OSC
CT 5
Q N M 9 E1

DEAD U
DEAD 4
C 11 C2

1 PWM O
D
VIN+ 10 E2

VIN-

VIN+
2

16
ERR

A L REF
14 VREF

VIN- 15 ERR
T I 5.0V
12 VCC

3
COMP
E N 7
GND

I D Figure 3. Functional Block Diagram

F
N
O
C
C
S D

August, 2016 Rev. 1.2 3/10

©2013 Shaoxing Devechip Microelectronics Co., Ltd. www.sdc-semi.com
 Datasheet
Voltage Mode PWM Controller SDC7500

Ordering Information
SDC7500 X X X - X
T
Circuit Type
E1: Pb-free
G1: Halogen-free
TR: Tape Reel E N
Reference
Blank: Tube
M
U
A:4.90V-4.99V Package
B:4.99V-5.08V DIP-16: Z

C
Package Temperature
Part Number
O
Marking ID
Packing Type
Pb-free Halogen-free
D
Pb-free Halogen-free

DIP-16 -40℃~85℃
SDC7500AZ -E1

SDC7500BZ -E1
SDC7500AZ -G1

A
SDC7500BZ -G1L SDC7500

SDC7500
SDC7500G

SDC7500G
Tube

Tube

T I
E N
I D
F
N
O
C
C
S D

August, 2016 Rev. 1.2 4/10

©2013 Shaoxing Devechip Microelectronics Co., Ltd. www.sdc-semi.com
 Datasheet
Voltage Mode PWM Controller SDC7500

Absolute Maximum Ratings (NOTE: Stresses greater than those listed under Absolute Maximum Ratings may cause
permanent damage to the device.)
Parameter Symbol Value Unit
T
Power supply voltage VCC
Amplifier input voltage
Collector output voltage
V CC
V IN
V OUT
42
0.3
42 E NV
V
V
Collector output current I CO 200
M mA
Total dissipation power
Operating Junction Temperature
PD
TJ
1000
-40~150 U mW
°C
Storage temperature T STG
C
-65~150 °C
Latch-up test per JEDEC 78 -
O 200 mA
ESD, HBM model per Mil-Std-883, Method 3015
ESD, MM model per JEDEC EIA/JESD22-A115
HBM
MM D 2000
200
V
V

L
Table 2. Absolute Maximum Ratings

A
Recommended Operating Conditions
Parameter Symbol
T I Min Max Unit
Power supply voltage VCC
Frequency
Operating temperature
E N
V CC
f osc
T OPR
10
1.0
-40
200
36

85
V
kHz
°C

I D
Table 3. Recommended Operating Conditions

F
N
O
C
C
S D

August, 2016 Rev. 1.2 5/10

©2013 Shaoxing Devechip Microelectronics Co., Ltd. www.sdc-semi.com
 Datasheet
Voltage Mode PWM Controller SDC7500

Electrical Characteristics (Ta=25°C, VCC=15.0V, unless otherwise specified.)

Parameter Symbol Conditions Min Typ Max Unit
Reference Section T
Output voltage(SDC7500A)
Output voltage(SDC7500B)
V REF I REF =1mA
4.90
4.99
-
-
N
4.99

E
5.08
V
V
Input regulation V Delta_VV V CC =7V~40V -
M
2 25 mV
Output regulation
Short-circuit output current
V Delta_VL
I SC
I REF =1mA~10mA
V REF =0V, Ta=25°C
-
- U 1
55
15
-
mV
mA
Output voltage change with temperature Delta_VT Ta=-25°C~85°C
C - 0.2 1 %
PWM Section
O
Input threshold voltage V TH DUTY=0
D - 4 4.5 V
Input sink current I SINK
Oscillator Section

A L V COMP =0.7V 0.3 0.7 - mA

Frequency

Standard deviation of frequency

f OSC

Delta
T I CT=1nf, RT=12kΩ
ALL Value of CT RT
23

-
29

10
34

-
kHz

Frequency change with temperature

Frequency change with voltage
E N Delta_FT
Delta_FV
Ta constant
Ta=-25°C~85°C
V CC =7V~40V
-
-
-
0.1
12
-
%
%

Input offset voltage

F ID Amplifier Section
V OFFSET V O(PIN3) =2.5V - 2 10 mV
Input offset current
Input bias current N I OFFSET
I BIAS
V O(PIN3) =2.5V
V O(PIN3) =2.5V
-
-
25
0.2
250
1
nA
uA
Output sink current
O I SINK V COMP =0.5V 0.3 0.7 - mA
Output source current
C
Common-mode input voltage range
I SOURSE
V IN
V COMP =3.5V
V CC =7V~40V
-2 -
-0.3~V CC
- mA
V

C
Open-loop voltage amplification GV V O =0.5V~3.5V 70 95 - dB

S D
Unity-gain bandwidth
Common-mode rejection ratio
f BAND
R REJ
-
V CC =40V
-
65
800
80
-
-
kHz
dB
Dead Time Control Section
Input bias I BIAS V I =0V~5.25V - -2 -10 uA
Maximum duty cycle GV V I(PIN4) =0 45 - - %
Input threshold voltage V TH DUTY=0 - 2.7 3.3 V
Input threshold voltage V TH DUTY=MAX 0 - - V

August, 2016 Rev. 1.2 6/10

©2013 Shaoxing Devechip Microelectronics Co., Ltd. www.sdc-semi.com
 Datasheet
Voltage Mode PWM Controller SDC7500

Parameter Symbol Conditions Min Typ Max Unit

Standby supply current

Power Current Section
I CC1 V CC =15V - 6 10 mA T
Standby supply current
Average supply current
I CC
I AV
V CC =40V
V PIN4 =2V
-
-
9
7.5
E N 15
-
mA
mA
Output Section
M
Collector off-state current IC
V CE =40V
V CC =40V
-
U 2 100 uA

Emitter off-state current IE

V CC =V C =40V
C - - -100 uA

Common-emitter V SAT
V E =0
V E =0, I C =100mA O - 1.0 1.3 V
Collector-emitter
saturation voltage Emitter-follower V SAT V C =15V, I E =-100mA D - 1.5 2.5 V
Output control input current I IN

A L
Switching Characteristics
V I =V REF - - 3.5 mA

Output voltage rise time

Output voltage fall time
tr
tf T I Common-emitter
configuration
-
-
100
25
200
100
ns
ns
Output voltage rise time
Output voltage fall time
E N tr
tf
Emitter-follower
configuration
-
-
100
40
200
100
ns
ns

Typical Performance Characteristics

F ID Table 4. Electrical Characteristics

5 N
Common-Emitter Configuration
100
Emitter-Follower Configuration

O
10

CT=0.001uF
104
C 80
Voltage Amplification(dB)
Oscillator Frequency(Hz)

CT=0.01uF 60
103

C
S D 102
VCC=15V
CT=0.1uF

CT=1uF
40

20
VCC=15V
∆V=3V
Ta=25°C
Ta=0°C~70°C
101 0
103 104 105 106 102 103 104 105 106
RT(timing resistance)(Ω) Frequency(Hz)

Figure 4. Oscillator frequency and frequency Figure 5. Amplifier voltage amplification

variation vs. Timing resistance

August, 2016 Rev. 1.2 7/10

©2013 Shaoxing Devechip Microelectronics Co., Ltd. www.sdc-semi.com
 Datasheet
Voltage Mode PWM Controller SDC7500

Typical Application

VIN
T
E N VOUT+

M
U
14
15

11

10
12
16

13

9
C
VIN1+ VIN2+
VIN1- VIN2-

DEAD CTRL
COMP VREF

C2

E2

E1
VCC
SDC7500

O
GND

D
CT

RT

C1

L
8
5

7
6
1

3
2

VOUT+

I A VOUT-

T
E N
I D Figure 6. Typical Application

F
N
O
C
C
S D

August, 2016 Rev. 1.2 8/10

©2013 Shaoxing Devechip Microelectronics Co., Ltd. www.sdc-semi.com
 Datasheet
Voltage Mode PWM Controller SDC7500

Package Dimension
DIP-16

T
E N
M
U
C
O
D
A L
T I
E N
I D
F
N Dimensions In Millimeters Dimensions In Inches
Symbol
O Min Max Min Max
A
A1 C 3.710
0.510
4.310
-
0.146
0.020
0.170
-

C
A2 3.200 3.600 0.126 0.142

S D B
B1
C
0.380

0.204
1.524(BSC)
0.570

0.360
0.015

0.008
0.060(BSC)
0.022

0.014
D 18.800 19.200 0.740 0.756
E 6.200 6.600 0.244 0.260
E1 7.320 7.920 0.288 0.312
e 2.540(BSC) 0.100(BSC)
L 3.000 3.600 0.118 0.142
E2 8.400 9.000 0.331 0.354

August, 2016 Rev. 1.2 9/10

©2013 Shaoxing Devechip Microelectronics Co., Ltd. www.sdc-semi.com
 Datasheet
Voltage Mode PWM Controller SDC7500

T
E N
M
U
C
Shaoxing Devechip Microelectronics Co., Ltd. O
D
http://www.sdc-semi.com/

A L
T I
E N
I D
F IMPORTANT NOTICE

N
Information in this document is provided solely in connection with Shaoxing Devechip Microelectronics Co., Ltd. (abbr. SDC) products.
SDC reserves the right to make changes, corrections, modifications or improvements, to this document, and the products and services

O
described herein at anytime, without notice. SDC does not assume any responsibility for use of any its products for any particular

C
purpose, nor does SDC assume any liability arising out of the application or use of any its products or circuits. SDC does not convey
any license under its patent rights or other rights nor the rights of others.

C © 2013 Devechip Microelectronics - All rights reserved

D
Contact us:

S
Headquarters of Shaoxing

Address: Tian Mu Road, No13,

Shenzhen Branch

Address: 22A, Shangbu building, Nan Yuan Road, No.68,

Shaoxing city, Zhejiang province, China Futian District, Shenzhen city, Guangdong province, China

Zip code: 312000 Zip code: 518031

Tel: (86) 0575-8861 6750 Tel: (86) 0755-8366 1155

Fax: (86) 0575-8862 2882 Fax: (86) 0755-8301 8528

August, 2016 Rev. 1.2 10/10

©2013 Shaoxing Devechip Microelectronics Co., Ltd. www.sdc-semi.com