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AF2039 - NMOSFET

Datasheet Summary

Description

The AF2039 using the external NMOSFET.

It is a high efficiency boost converter with 600mV feedback voltage.

A switching frequency of 550KHz minimizes solution footprint by allowing the use of tiny low profile inductors and ceramic capacitors.

Features

  • l Min1.6V Startup @1mA Load l 600mV Feedback Voltage l 550KHz Internal Oscillator l Soft Startup: 10mS Typical l Peak Current Programmable by Bottom Sensing Resistor l 300µA Typical Iq l Internal PWM/PFM Auto Mode Switching l Up to 90% Efficiency l External Enable l Power OFF Current.

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Datasheet preview – AF2039

Datasheet Details

Part number AF2039
Manufacturer AFSEMI
File Size 227.53 KB
Description NMOSFET
Datasheet download datasheet AF2039 Datasheet
Additional preview pages of the AF2039 datasheet.

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Full PDF Text Transcription

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AF2039 Features l Min1.6V Startup @1mA Load l 600mV Feedback Voltage l 550KHz Internal Oscillator l Soft Startup: 10mS Typical l Peak Current Programmable by Bottom Sensing Resistor l 300µA Typical Iq l Internal PWM/PFM Auto Mode Switching l Up to 90% Efficiency l External Enable l Power OFF Current<1µA l Over Voltage Protection l 140℃ Thermal Shut Down, 20℃ Hysteresis Applications l USB Charger General Description The AF2039 using the external NMOSFET. It is a high efficiency boost converter with 600mV feedback voltage. A switching frequency of 550KHz minimizes solution footprint by allowing the use of tiny low profile inductors and ceramic capacitors. The current mode PWM/PFM design is internally compensated, and the device has a 1.6V startup voltage with 1mA load.
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