SG1525A - Microsemi

SG1525A Regulating Pulse Width Modulator

The SG1525A/1527A series of pulse width modulator integrated circuits are designed to offer improved performance and lower external parts count when used to implement all types of switching power supplies. The on-chip +5.1 V reference is trimmed to ±1% initial accuracy and the input common-mode range of the error amplifier includes the reference voltage, eli.

Features

NOR logic, giving a LOW output for an OFF state. The SG1527A utilizes OR logic, which results in a HIGH output level when OFF. Block Diagram Features
 8V to 35V Operation
 5.1V Reference Trimmed to 1%
 100Hz to 500kHz Oscillator Range
 Separate Oscillator Sync Terminal
 Adjustable Deadtime Control
 Internal Soft-start
 Input Undervoltage Lockout
 Latching P.W.M. to Prevent Multiple Pulses
 Dual Source/Sink Output Drivers High Reliability Features Following are the high reliability features of SG1525A and SG1527A:
 Available to MIL-STD-883, ¶ 1.2.1
 MIL-M38510/12602BEA - JAN1525AJ .