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A4770

AiT Semiconductor
Part Number A4770
Manufacturer AiT Semiconductor
Description POWER SWITCH
Published Jun 5, 2015
Detailed Description AiT Semiconductor Inc. www.ait-ic.com A4770 POWER SWITCH 100mΩ POWER DISTRIBUTION DESCRIPTION The A4770 is an integrat...
Datasheet PDF File A4770 PDF File

A4770
A4770

Overview
AiT Semiconductor Inc.
www.
ait-ic.
com A4770 POWER SWITCH 100mΩ POWER DISTRIBUTION DESCRIPTION The A4770 is an integrated 100mΩ power switch for self-powered and bus-powered Universal Series Bus (USB) applications.
A built-in charge pump is used to drive the N-channel NMOSFET that is free of parasitic body diode to eliminate any reversed current flow across the switch when it is powered off.
Its low quiescent supply current (23μA) and small package (SOT-25) is particularly suitable in battery-powered portable equipment.
FEATURES  100mΩ Typ.
High-Side NMOSFET (SOT-25)  Guaranteed 1.
1A Continuous Current  1.
5A Current Limit  Small SOT-25 Package Minimizes Board Space  Soft Start  Thermal Protection  Low 23uA Supply Current  Wide Input Voltage Range: 2.
2V ~ 6V  Available in SOT-25 Package Several protection functions include soft start to limit inrush current during plug-in, current limiting at 1.
5A to meet USB power requirement, and thermal shutdown to protect damage under over current conditions.
The A4770 is available in SOT-25 package.
APPLICATION  Battery-Powered Equipment  Motherboard USB Power Switch  USB Device Power Switch  Hot-Plug Power Supplies  Battery-Charger Circuits ORDERING INFORMATION TYPICAL APPLICATION Package Type Part Number SOT-25 A4770E5R E5 A4770E5VR Note R: Tape & Reel, V: Green Package AiT provides all Pb free products Suffix “ V “ means Green Package REV1.
0 - JUL 2011 RELEASED - -1- AiT Semiconductor Inc.
www.
ait-ic.
com PIN DESCRIPTION A4770 POWER SWITCH 100mΩ POWER DISTRIBUTION Pin # 1, 5 2 3 4 Symbol VOUT CND VIN CE Top View Function Output Voltage Ground connection Power Input Chip Enable and High Level Active REV1.
0 - JUL 2011 RELEASED - -2- AiT Semiconductor Inc.
www.
ait-ic.
com A4770 POWER SWITCH 100mΩ POWER DISTRIBUTION ABSOLUTE MAXIMUM RATINGS Supply Voltage 8V Chip Enable -0.
3V ~ 8V Power Dissipation, PD@TA = 25℃ SOT-25 0.
25W Operation Junction Temperature Range -20℃ ~ 100℃ Storage ...


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