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SG3525 Datasheet Regulating Pulse Width Modulators

Manufacturer: STMicroelectronics

Overview: SG2525A ® SG3525A REGULATING PULSE WIDTH MODULATORS . 8 TO 35 V OPERATION . 5.1 V REFERENCE TRIMMED TO ± 1 % . 100 Hz TO 500 KHz OSCILLATOR RANGE . SEPARATE OSCILLATOR SYNC TERMINAL . ADJUSTABLE DEADTIME CONTROL . INTERNAL SOFT-START . PULSE-BY-PULSE SHUTDOWN . INPUT UNDERVOLTAGE LOCKOUT WITH HYSTERESIS . LATCHING PWM TO PREVENT MULTIPLE PULSES .

This datasheet includes multiple variants, all published together in a single manufacturer document.

General Description

The SG3525Aseries of pulse width modulator integrated circuits are designed to offer improved performance and lowered external parts count when used in designing all types of switching power supplies.

The on-chip + 5.1 V reference is trimmed to ± 1 % and the input common-mode range of the error amplifier includes the reference voltage eliminating external resistors.

A sync input to the oscillator allows multiple units to be slaved or a single unit to be synchronized to an external system clock.

Key Features

  • NOR logic, giving a LOW output for an OFF state. PIN.

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