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MAX1927

Maxim
Part Number MAX1927
Manufacturer Maxim
Description PWM Step-Down DC-DC Converters
Published May 6, 2005
Detailed Description 19-2527; Rev 0; 7/02 Low-Output-Voltage, 800mA, PWM Step-Down DC-DC Converters General Description The MAX1927/MAX1928 ...
Datasheet PDF File MAX1927 PDF File

MAX1927
MAX1927

Overview
19-2527; Rev 0; 7/02 Low-Output-Voltage, 800mA, PWM Step-Down DC-DC Converters General Description The MAX1927/MAX1928 800mA step-down converters power low-voltage microprocessors in compact equipment requiring the highest possible efficiency.
The MAX1927/MAX1928 are optimized for generating low output voltages (down to 750mV) at high efficiency using small external components.
The supply voltage range is from 2.
6V to 5.
5V and the guaranteed minimum output current is 800mA.
1MHz pulse-width modulation (PWM) switching allows for small external components.
A unique control scheme minimizes ripple at light loads, while maintaining a low 140µA quiescent current.
The MAX1927/MAX1928 include a low on-resistance internal MOSFET switch and synchronous rectifier to maximize efficiency and minimize external component count.
No external diode is needed.
100% duty-cycle operation allows for a dropout voltage of only 340mV at 800mA.
Other features include internal soft-start, power-OK (POK) output...


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