SG1825C - LINFINITY

SG1825C HIGH - SPEED CURRENT - MODE PWM

The SG1825C is a high-performance pulse width modulator optimized for high frequency current-mode power supplies. Included in the controller are a precision voltage reference, micropower start-up circuitry, softstart, high-frequency oscillator, wideband error amplifier, fast currentlimit comparator, full double-pulse suppression logic, and dual totempole ou.

Features

s IMPROVED REFERENCE INITIAL TOLERANCE (±1% max.) s IMPROVED OSCILLATOR INITIAL ACCURACY (±3% typ.) s IMPROVED STARTUP CURRENT (500µA typ.) s PROP DELAY TO OUTPUTS (50ns typ.) p 10V TO 30V OPERATION p 5.1V REFERENCE TRIMMED TO ±1% p 2MHZ OSCILLATOR CAPABILITY p 1.5A PEAK TOTEM-POLE DRIVERS p U.V. LOCKOUT WITH HYSTERESIS p NO OUTPUT DRIVER "FLOAT" p PROGRAMMABLE SOFTSTART p DOUBLE-PULSE SUPPRESSION LOGIC p WIDEBAND LOW-IMPEDANCE ERROR AMPLIFIER p CURRENT-MODE OR VOLTAGE-MODE CONTROL p WIDE CHOICE OF HIGH-FREQUENCY PACKAGES HIGH RELIABILITY FEATURES s AVAILABLE TO MIL-STD-883B s LINFINITY LEVEL .