HT6751A/B

Camera Motor Driver (1.5 Channel)

Features
· Operating voltage: 2.0V~6.0V · Built-in thermal shutdown circuit
· Operating current < 2mA at 3.0V, No load · Built-in H bridge control circuit
· Standby current IVDD< 2mA, no load · Built-in spark killer diode
· Separate logic power supply and motor · Provides strong ESD (min. of 4KV) per pin
power supply · 8-pin SOP package

Applications
· Camera motor driver · Toy motor driver

General Description
The IC can control H Bridge circuit for motor verse function/Brake function/Stop function for
driving. It provides Spark Killer Diode/Ther- motor driver application. It is designed by LSI
mal Shutdown function/Forward function/Re- high technology with low power process.

Block Diagram

R C C h a rg e
V D D O s c illa to r P u m p
V S S
H B r id g e V M
M o to r D r iv e O U T 1
IN 1 T h e rm a l C ir c u it
In p u t O U T 2
IN 2 S h u td o w n
C o n tro l
IN 3 C ir c u it

Pin Assignment

V M 1 8 O U T 2
O U T 1 2 7 IN 2
IN 3 3 6 V D D
V S S 4 5 IN 1

H T 6 7 5 1 A /B
8 S O P

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This datasheet has been downloaded from http://www.digchip.com at this page

 HT6751A/B

Pin Description
Pin No. Pin Name I/O Description
1 VM P Power of motor driving circuit
2 OUT1 O Connect to motor terminal
3 IN3 I Input signal
4 VSS ¾ Negative power supply, ground
5 IN1 I Input signal
6 VDD ¾ Positive power supply
7 IN2 I Input signal
8 OUT2 O Connect to motor terminal

Absolute Maximum Ratings

Supply Voltage .......................VDD-0.3V to 7.0V Storage Temperature.................-40°C to 125°C
Voltage to Input Terminal .....-0.3V to VDD+0.3 Operating Temperature ..............-20°C to 85°C
Junction Temperature ..............................150°C

Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maxi-
mum Ratings² may cause substantial damage to the device. Functional operation of this de-
vice at other conditions beyond those listed in the specification is not implied and prolonged
exposure to extreme conditions may affect device reliability.

Electrical Characteristics Ta=25°C

Test Conditions
Symbol Parameter Min. Typ. Max. Unit
VDD Conditions
VDD Operating Voltage 1 ¾ ¾ 2.0 ¾ 6.0 V
VM Operating Voltage 2 ¾ Motor loading 1.8 ¾ 6.0 V

IVM VM Current Standby mode with

5V ¾ ¾ 10 mA
internal pump
IOPR Operating Current 5V No load @ VDD=5V ¾ ¾ 2 mA
IVDD Standby Current 5V Standby mode ¾ 1 2 mA
IIL Input Leakage Current 5V 0<Vin<VDD -1.0 ¾ 1.0 mA
VIL Input Low Voltage 5V ¾ -0.3 0.3VDD V
VIH Input High Voltage 5V ¾ 0.6VDD ¾ VDD+0.3 V

RON (up_NMOS+down_
H Bridge On Resistance 3V ¾ ¾ 0.4 W
NMOS) at 3V

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 HT6751A/B

Test Conditions
Symbol Parameter Min. Typ. Max. Unit
VDD Conditions

tCP_ON Charge Pump Turn On VDD=VM=5V,

5V ¾ ¾ 2 ms
Time Ivm=0.5A

tCP_OFF Charge Pump Turn Off VDD=VM=5V,

5V ¾ ¾ 1 ms
Time Ivm=0.5A

tH_ON VDD=VM=5V,
H Bridge Turn On Time 5V ¾ ¾ 10 ms
Ivm=0.5A

tH_OFF VDD=VM=5V,
H Bridge Turn Off Time 5V ¾ ¾ 5 ms
Ivm=0.5A

Functional Description
· In HT6751A function

IN1 IN2 IN3 Function MOS On MOS Off

0 1 1 Motor1 forward P1/N2 P2/N1
1 0 1 Motor1 reverse P2/N1 P1/N2
0 0 1 Motor1 brake N1/N2 P1/P2
1 1 1 Standby mode ¾ P1/P2/N1/N2
0 1 0 Motor2 forward P2/(N3) N2/(P3)
1 0 0 Motor2 reverse N2/(P3) P2/(N3)
0 0 0 Motor2 brake N2/(N3) P2/(P3)

· In HT6751B function

IN1 IN2 IN3 Function MOS On Mos Off

1 0 0 Motor1 forward P1/N2 P2/N1
0 1 0 Motor1 reverse P2/N1 P1/N2
1 1 0 Motor1 brake N1/N2 P1/P2
0 0 0 Standby mode ¾ P1/P2/N1/N2
1 0 1 Motor2 forward P2/(N3) N2/(P3)
0 1 1 Motor2 reverse N2/(P3) P2/(N3)
1 1 1 Motor2 brake N2/(N3) P2/(P3)

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 HT6751A/B

¨ In normal state and standby mode ¨ The system enters thermal shutdown mode
– Charge pump circuit is in off state (current is limited below 500mA) when the
– Oscillator circuit is in off state temperature of the internal sensor is
– Standby current is below 2mA
greater than Junction Temperature and
then release this mode until the tempera-
– For HT6751A, the oscillator circuit and
ture of the internal sensor below (Junction
charge pump circuit is on until IN1 or IN2 Temperatue >150°C). The system can ac-
or IN3 is low input cept IN1/IN2/IN3 signal when in thermal
– For HT6751B, the oscillator circuit and
shutdown mode.
charge pump circuit is on until IN1 or IN2
or IN3 is high input

Application Circuits
V D D V M

V D D V M

V D D V M F o rw a rd V D D V M

IN 1 O U T 1 IN 1 O U T 1
1 C h a n n e l R e v e rs e M
M 1 B ra k e
fo r IN 2 O U T 2
m C /A S IC IN 2 O U T 2
V D D V D D
IN 3 V S S IN 3 V S S

H T 6 7 5 1 A H T 6 7 5 1 A

V D D V M
V D D V M

V D D V M F o rw a rd V D D V M
IN 1 O U T 1 IN 1 O U T 1
1 C h a n n e l R e v e rs e
M 1 M
fo r B ra k e
m C /A S IC IN 2 O U T 2 IN 2 O U T 2

IN 3 V S S IN 3 V S S

H T 6 7 5 1 B H T 6 7 5 1 B

V D D V M
P 3

V D D V M
IN 1 O U T 1 O U T 3
E x te rn a l
1 .5 C h a n n e l M 1 M 2 N 3
fo r
m C /A S IC IN 2 O U T 2

IN 3 V S S
H T 6 7 5 1 A /B

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 HT6751A/B

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Copyright Ó 2000 by HOLTEK SEMICONDUCTOR INC.

The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek
assumes no responsibility arising from the use of the specifications described. The applications mentioned herein are
used solely for the purpose of illustration and Holtek makes no warranty or representation that such applications
will be suitable without further modification, nor recommends the use of its products for application that may pres-
ent a risk to human life due to malfunction or otherwise. Holtek¢s products are not authorized for use as critical com-
ponents in life support devices or systems. Holtek reserves the right to alter its products without prior notification.
For the most up-to-date information, please visit our web site at http://www.holtek.com.tw.

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