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G554 Datasheet(PDF) 1 Page - Global Mixed-mode Technology Inc |
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G554 Datasheet(HTML) 1 Page - Global Mixed-mode Technology Inc |
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1 / 1 page  Ver 0.2 Jan 11, 2008 TEL: 886-3-5788833 http://www.gmt.com.tw 1 G554 Global Mixed-mode Technology Inc. Dual Power Distribution Switch Features 118m Ω High-Side MOSFET 450mA Typical Current Limit with Foldback Operating Range:2.7V to 5.5V 400µS Typical Rise Time Under voltage Lockout 65µA Quiescent Supply Current 1µA Maximum Shutdown Supply Current Logic Level Enable Pin, Available with Active-High or Active-Low Version No Reverse Current when Power Off Deglitched Open-Drain Over-Current Flag Output ( OC ) SOP-8 Package Applications High-Side Power Protection Switch USB Power Management USB Host and Self-Powered Bubs USB Bus-Powered Hubs Hot Plug-In Power Supplies Battery-Charger Circuits General Description The G554 is an integrated dual channel 118m Ω power switch for self-powered and bus-powered Universal Serial Bus (USB) applications. Several Protection features include current limiting with foldback, and thermal shutdown to prevent catas- trophic switch failure caused by increasing power dis- sipation when continuous heavy loads or short circuit occurs. And a built-in charge pump is used to drive the N-channel MOSFET that is free of parasitic body diode to eliminate any reversed current flow across the switch when it is powered off. OC is open-drain output report over-current or over-temperature event and has typical 9ms deglitch timeout period. Ordering Information ORDER NUMBER MARKING ENABLE Current Limit TEMP. RANGE PACKAGE (Pb free) G554D1P11U G554D1 Active High 0.45A -40°C to +85°C SOP-8 G554D2P11U G554D2 Active Low 0.45A -40°C to +85°C SOP-8 Note: P1: SOP-8 1: Bonding Code U: Tape & Reel Pin Configuration Typical Application Circuit 0.1µF 22µF Load OC1 EN1 (EN1) OC2 EN2 (EN2) 0.1µF 22µF Load 1µF Power Supply 2.7V to 5.5V OUT1 OUT2 IN 8 6 5 1 2 3 4 GND OC1 EN1(EN1) SOP-8 G554 7 OUT1 IN OUT2 EN2 (EN2) OC2 0.1µF 22µF Load OC1 EN1 (EN1) OC2 EN2 (EN2) 0.1µF 22µF Load 1µF Power Supply 2.7V to 5.5V OUT1 OUT2 IN 8 6 5 1 2 3 4 GND OC1 EN1(EN1) SOP-8 G554 7 OUT1 IN OUT2 EN2 (EN2) OC2 8 6 5 1 2 3 4 GND OC1 EN1(EN1) SOP-8 G554 7 OUT1 IN OUT2 EN2 (EN2) OC2 |
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