
2A, HALF-BRIDGE DRIVER
FEATURES
Source or sink 5A peak
Half-bridge with internal diodes
TTL input compatibility
Either dual- or tri-state output
Direct PWM motor drive from microprocessor
Built-in thermal protection
SG3635P replaces UDN2935Z
HIGH RELIABILITY FEATURES
- SG1635
Available to MIL-STD-883
LMI level "S" processing available
DESCRIPTION
The SG1635 is a monolithic integrated circuit designed to interface
low-level logic signals with high-current, inductive, or capacitive
loads. This device is particularly adept at high-speed pulse width
modulation for motor drives or Class D audio amplifiers, and when
used in pairs, they can provide full bridge drive for bi-directional
control.
With TTL-compatible units, this device will either source or sink up
to 5A of peak current with interlock protection to insure that source
and sink cannot be on simultaneously. Additional protection is
provided by thermal shutdown of the source output if the chip
temperature rises above 160°C. High speed internal commutating
diodes are also included.
BLOCK DIAGRAM - SG1635/3635
6/91 Rev 1.1 5/94
Copyright
1994
L
IN
F
IN
ITY
Microelectronics Inc.
11861 Western Avenue
∞
∞
Garden Grove, CA 92841
(714) 898-8121
∞
FAX: (714) 893-2570
1
SG1635/SG3635
TRUTH TABLE
Enable
Pulse
0
0
0
1
1
0
1
1
Output
High
High
Low
Off - High Z
1 = Open or High