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AX3771

AXElite
Part Number AX3771
Manufacturer AXElite
Description Dual High-Efficiency PWM Step-Down DC-DC Converter
Published Jan 12, 2017
Detailed Description AX3771 (Preliminary) Dual High-Efficiency PWM Step-Down DC-DC Converter  GENERAL DESCRIPTION The AX3771 is a dual high-...
Datasheet PDF File AX3771 PDF File

AX3771
AX3771

Overview
AX3771 (Preliminary) Dual High-Efficiency PWM Step-Down DC-DC Converter  GENERAL DESCRIPTION The AX3771 is a dual high-efficiency Pulse-Skipping-Modulated (PSM) step-down DC-DC converter.
It is capable of delivering 1A output current over a wide input voltage range from 2.
5V to 7.
5V, the AX3771 is ideally suited for portable electronic devices that are powered from 1-cell Li-ion battery or from other power sources within the range such as cellular phones, PDAs and other handheld devices.
Two operational modes are available: PSM/Low-Dropout auto-switch and shutdown modes.
Internal synchronous rectifier with low RDS(ON) dramatically reduces conduction loss at PSM mode.
No external Schottky diode is required in practical application.
The AX3771 enters Low-Dropout mode when normal PSM cannot provide regulated output voltage by continuously turning on the upper PMOS.
The AX3771 enter shutdown mode and consumes less than 0.
1μA when EN pin is pulled low.
The switching ripple is easily smo...


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