SG1635

SG1635/SG3635 2A, HALF-BRIDGE DRIVER 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. 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 BLOCK DIAGRAM - SG1635/3635 TRUTH TABLE Enable 0 0 1 1 Pulse 0 1 0 1 Output High High Low Off - High Z 1 = Open or High 6/91 Rev 1.1 5/94 Copyright © 1994 1 11861 Western Avenue ∞ Garden Grove, CA 92841 (714) 898-8121 ∞ FAX: (714) 893-2570 LINFINITY Microelectronics Inc. SG1635/SG3635 ABSOLUTE MAXIMUM RATINGS (Note 1) Supply Voltage (VS) SG1635/SG3635 ........................................................