General Description

The MAX16956 is a small, synchronous buck converter with integrated high-side and low-side switches. The device is designed to deliver up to 300mA with input voltages from 3.5V to 36V, while using only 1.1µA quiescent current at no load (fixed-output versions). Voltage quality can be monitored by observing the RESET signal. The device can operate near dropout by running at 97 duty cycle, making it ideal for automotive applications under cold-crank.

Benefts and Features

● Integration and High-Switching Frequency Saves Space

    • DC-DC Converter Up to 300mA Capability

    • Fixed 5V/3.3V or Programmable Output-Voltage Options (1V to 10V)

    • Current-Mode-Control Architecture

    • 2.1MHz Operating Frequency

    • Fixed 5.4ms Internal Soft-Start

● Spread-Spectrum Frequency Modulation Reduces EMI Emissions

● Low IQ Enables Designers to Meet Stringent OEM Module Power-Consumption Requirements

    • 1.1µA Quiescent Current in Standby Mode (Fixed-Output-Voltage Versions Only)

● Wide Input Voltage Range Supports Automotive Applications

    • Operating VIN Range: 3.5V to 36V (42V Tolerant)

    • 97 (Max) Duty-Cycle Operation with Low Dropout

● Robust Performance Supports Wide Range of Automotive Applications

    • Short-Circuit, Thermal Protections

    • -40°C to +125°C Automotive Temperature Range

    • AEC-Q100 Qualified

Applications

● Automotive Body ECUs

● Point-of-Load Applications

● Distributed DC Power Systems