This document describes the features and characteristics of the L6910 and L6910A models, including adjustable output voltage, N-inverting E/A input, 0.9V ±1.5% voltage reference, voltage mode PWM control, very fast load transient response, 0% to 100% duty cycle, power good output, overvoltage protection, hiccup overcurrent protection, 200kHz internal oscillator, externally adjustable oscillator frequency, soft start and inhibit functions, etc.
The L6910 and L6910A are integrated circuit PWM controllers designed for high-performance step-down DC-DC conversion from 3.3V, 5V, and 12V buses. The device drives N-channel MOSFets in a synchronous-rectified buck topology, regulating the output voltage down to 0.9V with an internal reference or an external reference between 0.9V and 3V. It features a voltage-mode control with a 200kHz internal oscillator that is externally adjustable from 50kHz to 1MHz.
| Operating Supply Voltage | 5V to 12V |
|---|---|
| Gate Current Capability | Up to 1.3A |
| Voltage Reference | 0.9V ±1.5% |
| Internal Oscillator Frequency | 200kHz |
| Oscillator Adjustability | 50kHz to 1MHz |
| Output Voltage Range | Down to 0.9V |
| Maximum Power Dissipation (SO-16) | 120°C/W thermal resistance |
Yes, the oscillator is externally adjustable from 50kHz to 1MHz using a resistor.
The output voltage can be regulated down to 0.9V using the internal reference.