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G528 Datasheet(PDF) 1 Page - Global Mixed-mode Technology Inc |
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G528 Datasheet(HTML) 1 Page - Global Mixed-mode Technology Inc |
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1 / 8 page  Ver: 1.2 May 17, 2005 TEL: 886-3-5788833 http://www.gmt.com.tw 1 G528/G528A Global Mixed-mode Technology Inc. USB High-Side Power Switch Advance Information Features Typical 110m Ω, Low MOSFET on resistance, at 5.0V 3.0V to 5.5V operating range 100 µA typical on-state supply current 1µA typical standby supply current Output can be forced higher than input when operating in off state. 1.4A Typical current limit Thermal shutdown protection 2.4V typical under-voltage lockout (UVLO) Open-drain fault flag pin Slow turn-on (soft-start) and fast turnoff Logic level enable pin, available with active-low version (G528), or available with active-high version (G528A) UL Approved_#E232223 Applications High-side power protection switch USB power management USB host and self-powered hubs USB Bus-powered hubs Hot plug-in power supplies Battery-charger circuits General Description The G528/G528A is an integrated high-side power switch optimized for self-powered and bus-powered Universal Serial Bus (USB) applications. The G528/G528A satisfies the USB standards. The switch's low on-resistance meets USB voltage drop requirements. When the output load exceeds cur- rent-limit threshold, G528/G528A switches into con- stant-current mode and limit the output current to a safe level, which is typically 1.4A. An open-drain flag output is also available to indicate fault conditions to the local USB controller. Soft start eliminates the mo- mentary voltage drop on the upstream port that may occur when the switch is enabled in bus-powered applications. Besides, a thermal shutdown circuit is included to prevent catastrophic switch failure caused by increas- ing power dissipation when continuous heavy loads or short circuit occurs. A under-voltage lockout (UVLO) circuit ensures that the device remains off unless there is a valid input voltage present, and an enable input that is compatible with both 3.3V and 5V logic. Ordering Information ORDER NUMBER ORDER NUMBER (Pb free) ENABLE TEMP. RANGE PACKAGE G528P1U G528P1Uf Active Low -40°C to +85°C SOP-8 G528AP1U G528AP1Uf Active High -40°C to +85°C SOP-8 Note: P1: SOP-8L U: Tape & Reel Pin Configuration 1 2 3 4 8 7 6 5 G528/G528A EN (EN) GND OUT OUT SOP-8 OUT FLG IN IN 1 2 3 4 8 7 6 5 G528/G528A EN (EN) GND OUT OUT SOP-8 OUT FLG IN IN |
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