DS3669 Quad High Current Peripheral Driver
July 1992
DS3669 Quad High Current Peripheral Driver
General Description
The DS3669 is a non-inverting quad peripheral driver similar
to the DS3658 These drivers are designed for those appli-
cations where low operating power high breakdown volt-
age high output current and low output ON voltage are re-
quired A unique input circuit combines TTL compatibility
with high impedance In fact its extreme low input current
allows it to be driven directly by a CMOS device
The outputs are capable of sinking 600 mA each and offer a
70V breakdown However for inductive loads the output
should be clamped to 35V or less to avoid latch-up during
turn off (inductive fly back protection refer AN-213) An on-
chip clamp diode capable of handling 800 mA is provided at
each output for this purpose In addition the DS3669 incor-
porates circuitry that guarantees glitch-free power up or
down operation
The molded package is specifically constructed to allow in-
creased power dissipation over conventional packages The
four ground pins are directly connected to the device chip
with a special copper lead frame When the quad driver is
soldered into a PC board the power rating of the device
improves significantly
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Stepping motor drivers
Triac drivers
LED drivers
High current high voltage drivers
Level translators
Fiber optic LED drivers
Features
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Applications
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Relay drivers
Lamp drivers
Solenoid drivers
Hammer drivers
Single saturated transistor outputs
Low standby power 10 mW typical
High impedance TTL compatible inputs
Outputs may be tied together for increased current
capacity
High output current
600 mA per output
2 4A per package
No output latch-up at 35V
Low output ON voltage (350 mV typ 600 mA)
High breakdown voltage (70V)
Open collector outputs
Output clamp diodes for inductive fly back protection
NPN inputs for minimal input currents (1
mA
typical)
Low operating power
Standard 5V power supply
Power up down protection
2W power package
Connection Diagram
Dual-In-Line Package
Truth Table
IN
L
H
L
H
L
e
Low state
Z
e
High impedance state
EN
H
H
L
L
OUT
L
Z
Z
Z
H
e
High state
TL F 5820 鈥?1
Top View
Order Number DS3669N
See NS Package Number N16E
C
1995 National Semiconductor Corporation
TL F 5820
RRD-B30M105 Printed in U S A
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