General Description

The MAX16930/MAX16931 offer two high-voltage, synchronous step-down controllers and a step-up preboost controller. They operate with an input voltage supply from 2V to 42V with preboost active and can operate in drop-out condition by running at 95 duty cycle. The devices are intended for applications with mid- to high-power requirements that operate at a wide input voltage range such as during automotive cold-crank or engine stop-start conditions.

Features

Dual, 2MHz Step-Down Controllers

Preboost for Operation to 2V

180° Out-of-Phase Operation

50ns Minimum On-Time Allows 3.3V Output from Car Battery at 2.2MHz

20µA Operating Current

Wide Input Supply Range from 3.5V to 36V (with out Preboost)

Resistor Programmable Frequency Between 200kHz and 2.2MHz

Q1 Output-Voltage Accuracy: 5.0V/3.3V Fixed or Adjustable Between 1V and 10V

Current-Mode Controllers with Forced Continuous and Skip Modes

Frequency Synchronization Input

Supply Overvoltage and Undervoltage Lockout

Overtemperature and Short-Circuit Protection

Thermally Enhanced 40-Pin TQFN-EP Package

-40℃ to +125℃ Operating Temperature

Applications

POL Applications for Automotive Power

Distributed DC Power Systems

Navigation and Radio Head Units