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MAX653 Datasheet 5v/3.3v/3v/adjustable / High-efficiency / Low Iq / Step-down DC-dc Converters

Manufacturer: Maxim Integrated (now Analog Devices)

Overview: 19-4505; Rev 3; 8/97 KIT ATION D EVALU CLUDE IN N IO T A M R O INF 5V/3.

General Description

The MAX639/MAX640/MAX653 step-down switching regulators provide high efficiency over a wide range of load currents, delivering up to 225mA.

A current-limiting pulse-frequency-modulated (PFM) control scheme gives the devices the benefits of pulse-width-modulated (PWM) converters (high efficiency at heavy loads), while using only 10µA of supply current (vs.

2mA to 10mA for PWM converters).

Key Features

  • o High Efficiency for a Wide Range of Load Currents o 10µA Quiescent Current o Output Currents Up to 225mA o Preset or Adjustable Output Voltage: 5.0V (MAX639) 3.3V (MAX640) 3.0V (MAX653) o Low-Battery Detection Comparator o Current-Limiting PFM Control Scheme _______________General.

MAX653 Distributor

More Datasheets from Maxim Integrated (now Analog Devices)

Part Number Description
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