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MAX1960 - 1MHz PWM Step-Down Controllers

Description

The MAX1960/MAX1961/MAX1962 high-current, highefficiency voltage-mode step-down DC-DC controllers operate from a 2.35V to 5.5V input and generate output voltages down to 0.8V at up to 20A.

An on-chip charge pump generates a regulated 5V for MOSFET drive.

Features

  • o 0.5% Accurate Output o Operates from 2.35V to 5.5V Supply o Generates Low Output Voltage Down to 0.8V o o o o o o o o On-Chip Charge Pump Provides 5V Gate Drive Ceramic or Electrolytic Capacitors 94% Efficiency External Synchronization from 450kHz to 1.2MHz 500kHz/1MHz Fixed-Frequency PWM Operation Fast Transient Response Two Converters Can Operate 180° Out-of-Phase ±4% Voltage Margining for System Test MAX1960/MAX1961/MAX1962 o 10% Accurate Current Sensing (MAX1962) o Adaptive Dead Time Pre.

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The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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19-2740; Rev 0; 1/03 KIT ATION EVALU E L B A IL AVA www.DataSheet4U.com 2.35V to 5.5V, 0.5% Accurate, 1MHz PWM Step-Down Controllers with Voltage Margining General Description The MAX1960/MAX1961/MAX1962 high-current, highefficiency voltage-mode step-down DC-DC controllers operate from a 2.35V to 5.5V input and generate output voltages down to 0.8V at up to 20A. An on-chip charge pump generates a regulated 5V for MOSFET drive. Additionally, adaptive dead-time drivers allow a wide variety of MOSFETs to be used without risking shoot-through. Fixed-frequency PWM operation and external synchronization make these controllers suitable for telecom and datacom applications. The operating frequency is programmable to either 500kHz or 1MHz, or from 450kHz to 1.2MHz with an external clock.