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MAX651

Part Number	MAX651
Manufacturer	Maxim
Description	Step-Down DC-DC Controllers
Published	May 5, 2014
Detailed Description	19-0225; Rev 3; 9/97 K ATION EVALU BLE AVAILA IT 5V/3.3V/3V or Adjustable, High-Efficiency, Low IQ, Step-Down DC-DC C...
Datasheet	MAX651 PDF File

Overview

...ontrollers _______________General Description The MAX649/MAX651/MAX652 BiCMOS, step-down DCDC switching controllers provide high efficiency over three decades of load current.
A unique, current-limited pulse-frequency-modulated (PFM) control scheme gives these devices the benefits of pulse-width-modulation (PWM) converters (high efficiency at heavy loads), while using only 100µA of supply current (vs.
2mA to 10mA for PWM converters).
The result is high efficiency over loads ranging from 10mA to more than 2.
5A.
These devices use miniature external components.
Their high switching frequency (up to 300kHz) allows for less than 9mm diameter surface-mount inductors.
The MAX649/MAX651/MAX652 have ...

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