SG3525AP013TR Description

When employed in the design of all varieties of switching power supply, the pulse width modulator integrated circuits (SG3525AP013TR) are intended to provide increased performance and reduced exterior parts count. The input common-mode range of the error amplifier includes the reference voltage, removing external resistors, and the on-chip + 5.1 V reference is reduced to 1 percent. A sync input to the oscillator enables the slaving of several units or the synchronization of a single device to an external system clock. A single resistor placed between the CT and discharge terminals can adjust the dead time over a large range. Additionally, these devices have internal soft-start circuitry, necessitating only an external timing capacitor.

SG3525AP013TR Features

• OPERATION FROM 8 TO 35 V

• 5.1.1 V REFERENCE TRIMMED TO 1%

• RANGE OF 100 Hz TO 500 kHz OSCILLATORS

• OSCILLATOR SYNC TERMINAL SEPARATE

• CONTROL FOR ADJUSTABLE DEATHTIME

SG3525AP013TR Applications

• COMPUTER SOFT-START

• SHUTDOWN PULSE BY PULSE

• HYSTERESIS AND INPUT UNDERVOLTAGE LOCKOUT

• PWM LATCHING TO PREVENT MANY PULSES

• DRIVERS FOR DUAL SOURCE/SINK OUTPUT