The LT4430 drives the opto-coupler that crosses the galvanic barrier in an isolated power supply. The IC contains a precision-trimmed reference, a high bandwidth error amplifier, an inverting gain of 6 stage to drive the optocoupler and unique overshoot control circuitry. The LT4430’s 600mV reference provides ±0.75% initial accuracy and ±1.25% tolerance over temperature. A high bandwidth 9MHz error amplifier permits simple frequency compensation and negligible phase shift at typical loop crossover frequencies. The opto-coupler driver provides 10mA of output current and is short-circuit protected. A unique overshoot control function prevents output overshoot on start-up and short-circuit recovery with a single capacitor. The LT4430 is available in the low profile 6-lead TSOT-23 package. Applications * 48V Input Isolated DC/DC Converters * Isolated Telecommunication Power Systems * Distributed Power Step-Down Converters * Offline Isolated Power Supplies * Industrial Control Systems * Automotive and Heavy Equipment * 600mV Reference (1.25% Over Temperature) * Wide Input Supply Range: 3V to 20V * Overshoot Control Function Prevents Output Overshoot on Start-Up and Short-Circuit Recovery * High Bandwidth Error Amplifier Permits Simple Loop Frequency Compensation * Ground-Referenced Opto-Coupler Drive * 10mA Opto-Coupler Drive with Current Limiting * Low Profile (1mm) ThinSOT™ Package https://elecena.pl/product/247543/secondary-side-optocoupler-driver 2007-03-01 https://elecena.pl/product/247543/secondary-side-optocoupler-driver 2017-10-10 https://elecena.pl/product/247543/secondary-side-optocoupler-driver 2025-01-17