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Part Number
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MAX1651 |
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Manufacturer
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Maxim |
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Description
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Step-Down DC-DC Controllers |
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Published
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May 6, 2005 |
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Detailed Description
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19-0305; Rev 2; 9/95
5V/3.3V or Adjustable, High-Efficiency, Low-Dropout, Step-Down DC-DC Controllers
_______________Ge...
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Datasheet
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MAX1651
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Overview
19-0305; Rev 2; 9/95
5V/3.
3V or Adjustable, High-Efficiency, Low-Dropout, Step-Down DC-DC Controllers
_______________General Description
The MAX1649/MAX1651 BiCMOS, step-down, DC-DC switching controllers provide high efficiency over loads ranging from 1mA to more than 2.
5A.
A unique, currentlimited 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).
Dropout performance down to 300mV is provided by a high switch duty cycle (96.
5%) and a low current-sense threshold (110mV).
A high switching frequency (up to 300k...
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