Camera Motor Driver (1.5 Channel)
Features
Operating voltage: 2.0V~6.0V
·
Operating current < 2mA at 3.0V, No load
·
Standby current I
·
Separate logic power supply and motor
·
power supply
Applications
Camera motor driver
·
General Description
The IC can control H Bridge circuit for motor
driving. It provides Spark Killer Diode/Ther
mal Shutdown function/Forward function/Re
Block Diagram
<2mA, no load
VDD
HT6751A/B
Built-in thermal shutdown circuit
·
Built-in H bridge control circuit
·
Built-in spark killer diode
·
Provides strong ESD (min. of 4KV) per pin
·
8-pin SOP package
·
Toy motor driver
·
verse function/Brake function/Stop function for
motor driver application. It is designed by LSI
high technology with low power process.
-
VDD
VSS
IN 1
IN 2
IN 3
RC
O scillator
Input
C ontrol
Pin Assignment
VM
OUT1
IN 3
VSS
1
2
3
4
H T6751A /B
8 S O P
8
7
6
5
OUT2
IN 2
VDD
IN 1
C harge
Pum p
Therm al
Shutdow n
Circuit
H B ridge
Motor Drive
Circuit
VM
OUT1
OUT2
1 August 7, 2000
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
Negative power supply, ground
¾
5 IN1 I Input signal
6 VDD
Positive power supply
¾
7 IN2 I Input signal
8 OUT2 O Connect to motor terminal
Absolute Maximum Ratings
HT6751A/B
Supply Voltage.......................VDD-0.3V to 7.0V
Voltage to Input Terminal .....-0.3V to V
DD
+0.3
Storage Temperature.................-40°Cto125°C
Operating Temperature ..............-20°Cto85°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
V
DD
Operating Voltage 1
VM Operating Voltage 2
I
VM
I
OPR
I
VDD
I
IL
V
V
R
IL
IH
ON
VMCurrent
Operating Current 5V
Standby Current 5V Standby mode
Input Leakage Current 5V
Input Low Voltage 5V
Input High Voltage 5V
H Bridge On Resistance 3V
V
DD
Conditions
¾¾
Motor loading 1.8
¾
Standby mode with
5V
internal pump
No load @ V
0<Vin<V
DD
DD
=5V
¾-0.3
¾
(up_NMOS+down_
NMOS) at 3V
Min. Typ. Max. Unit
2.0
¾
¾
¾¾
¾¾
¾
-1.0 ¾
0.6V
DD
¾
¾¾
6.0 V
6.0 V
10
2mA
12
1.0
0.3V
DD
+0.3
V
DD
0.4
mA
mA
mA
V
V
W
-
-
2 August 7, 2000
HT6751A/B
Symbol Parameter
t
CP_ON
t
CP_OFF
t
H_ON
t
H_OFF
Charge Pump Turn On
Time
Charge Pump Turn Off
Time
H Bridge Turn On Time 5V
H Bridge Turn Off Time 5V
V
DD
5V
5V
Conditions
VDD=VM=5V,
Ivm=0.5A
VDD=VM=5V,
Ivm=0.5A
=VM=5V,
V
DD
Ivm=0.5A
=VM=5V,
V
DD
Ivm=0.5A
Min. Typ. Max. Unit
¾¾
¾¾
¾¾
¾¾
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
Test Conditions
1 1 1 Standby mode
¾
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)
P1/P2/N1/N2
2ms
1ms
10
5
ms
ms
·
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)
3 August 7, 2000
HT6751A/B
¨
In normal state and standby mode
–
Charge pump circuit is in off state
–
Oscillator circuit is in off state
–
Standby current is below 2mA
–
For HT6751A, the oscillator circuit and
charge pump circuit is on until IN1 or IN2
or IN3 is low input
–
For HT6751B, the oscillator circuit and
charge pump circuit is on until IN1 or IN2
or IN3 is high input
Application Circuits
1 C hannel
fo r
C/ASIC
m
V
DD
V
VDD
IN 1
IN 2
IN 3
H T6751A
V
V
DD
DD
VM
OUT1
OUT2
VSS
V
M
M1
M
¨
The system enters thermal shutdown mode
(current is limited below 500mA) when the
temperature of the internal sensor is
greater than Junction Temperature and
then release this mode until the tempera
ture of the internal sensor below (Junction
Temperatue >150°C). The system can ac
cept IN1/IN2/IN3 signal when in thermal
shutdown mode.
Brake
Forw ard
Reverse
V
VDD
IN 1
IN 2
V
DD
IN 3
V
DD
M
VM
OUT1
M
OUT2
VSS
H T6751A
V
V
DD
M
-
-
1 C hannel
fo r
C/ASIC
m
1.5 C hannel
fo r
C/ASIC
m
VDD
IN 1
IN 2
IN 3
VM
OUT1
OUT2
VSS
H T6751B
V
VDD
IN 1
IN 2
IN 3
V
DD
OUT1
OUT2
VSS
H T6751A /B
M
M1
OUT3
M1VMM2
P3
N3
VM
OUT1
M
OUT2
Brake
Forw ard
Reverse
VDD
IN 1
IN 2
IN 3 V S S
H T6751B
External
4 August 7, 2000
HT6751A/B
Holtek Semiconductor Inc. (Headquarters)
No.3 Creation Rd. II, Science-based Industrial Park, Hsinchu, Taiwan, R.O.C.
Tel: 886-3-563-1999
Fax: 886-3-563-1189
Holtek Semiconductor Inc. (Taipei Office)
5F, No.576, Sec.7 Chung Hsiao E. Rd., Taipei, Taiwan, R.O.C.
Tel: 886-2-2782-9635
Fax: 886-2-2782-9636
Fax: 886-2-2782-7128 (International sales hotline)
Holtek Semiconductor (Hong Kong) Ltd.
RM.711, Tower 2, Cheung Sha Wan Plaza, 833 Cheung Sha Wan Rd., Kowloon, Hong Kong
Tel: 852-2-745-8288
Fax: 852-2-742-8657
Copyright ã 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 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.
5 August 7, 2000
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