ML4890 Datasheet High Efficiency / Low Ripple Boost Regulator

Manufacturer: Micro Linear

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Datasheet Details

Part number	ML4890
Manufacturer	Micro Linear
File Size	256.06 KB
Description	High Efficiency / Low Ripple Boost Regulator
Datasheet	ML4890_MicroLinearCorporation.pdf

General Description

The ML4890 is a high efficiency, PFM (Pulse Frequency Modulation), boost switching regulator connected in series with an integrated LDO (Low Dropout Regulator) that incorporates “Silent Switcher™” technology.

This technique incorporates a patented tracking scheme to minimize the voltage drop across the LDO and increase the total efficiency of the regulator beyond that which can be obtained by using a discrete external LDO regulator.

The ML4890 is designed to convert single or multiple cell battery inputs to regulated output voltages for integrated circuits and is ideal for portable communications equipment that cannot tolerate the output voltage ripple normally associated with switching regulators.

Key Features

s s Incorporates “Silent Switcher™” technology to deliver very low output voltage ripple (typically 5mV) Guaranteed full load start-up and operation at 1.0V input and low operating quiescent current (.

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