CS3720
CS3720
2A H-Bridge Driver
Description
The CS3720 is high current (2A typ)
bidirectional DC motor driver. The
H-bridge output stage consists of
two pairs of power NPN transis-
tors, each with a V
SAT
=2.3V at
I
OUT
=2A (typ).
The three TTL compatible inputs,
ENABLE1, ENABLE2, and DIREC-
TION control the output stage.
When ENABLE1 is low and
ENABLE2 is high, DIRECTION
determines which way current
flows through the motor coil. Any
other combination of ENABLE set-
tings disables the outputs.
The CS3720 is protected against
overvoltage fault conditions. If a
fault condition is detected, the IC
shuts down.
Features
s
High Current (2A typ)
Output
s
TTL compatible
DIRECTION Control
s
Fault Protection
Overvoltage
Load Dump Protection to
74V
Absolute Maximum Ratings
DC Input Voltage ..................................................................................-0.3 to 28V
Transient Input Voltage ...................................................................... -0.3 to 74V
Internal Power Dissipation......................................................Internally limited
Junction Temperature Range .....................................................-40¡C to +150¡C
Storage Temperature Range.......................................................-65¡C to +150¡C
Lead Temperature Soldering
Wave Solder (through hole styles only) ............10 sec. max, 260¡C peak
Reflow (SMD styles only) .............60 sec. max above 183¡C, 230¡C peak
Electrostatic Discharge (Human Body Model).............................................2kV
Block Diagram
V
SS
V
REF
Transient
Protection
Over
Current
Protection
OUTPUT
DRIVER
+
Package Options
7 Lead Power SIP
2
4
6
8
10
12
14
ENABLE1
DIRECTION
COIL+
Gnd
COILÐ
V
SS
ENABLE2
Q
1
Q
3
Over
Current
Protection
Overvoltage
Protection
COIL +
COIL -
7 Lead TO-220
7 Lead D
2
PAK
ENABLE1
ENABLE2
DIRECTION
DRIVE
CONTROL
LOGIC
OUTPUT
DRIVER
Ð
Q
4
Q
2
1
2
3
4
5
6
7
1
ENABLE1
DIRECTION
COIL+
Gnd
V
SS
COILÐ
ENABLE2
1
Gnd
Cherry Semiconductor Corporation
2000 South County Trail, East Greenwich, RI 02818
Tel: (401)885-3600 Fax: (401)885-5786
Email: info@cherry-semi.com
Web Site: www.cherry-semi.com
Rev. 5/4/99
1
A
¨
Company
CHERRY [ CHERRY SEMICONDUCTOR CORPORATION ]
