US3076

UNISONIC TECHNOLOGIES CO., LTD US3076-US3376 Preliminary CMOS IC DUAL USB HIGH-SIDE POWER SWITCH DESCRIPTION The UTC US3076-US3376 is an integrated dual channel for USB high-side power switch. It particularly designed for self-powered and bus-powered Universal Serial Bus (USB) applications. The RDS(ON) of the MOSFET switch is as low as 87mΩ. OC which is open-drain output report over-current or over-temperature event, has deglitch timeout period typically 9ms. The UTC US3076-US3376 incorporates some protection circuits, such as current limiting circuit with foldback function, thermal shutdown circuit which is designed to prevent catastrophic switch failure due to increasing power dissipation when continuous heavy loads or short circuit occurs. 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. The UTC US3076-US3376 is applied in high-side power protection switch, USB power management, USB host and self-powered bubs, USB bus-powered hubs, hot plug-in power supplies, and battery-charger circuits. SOP-8 FEATURES * Operating on the Range of 2.7V to 5.5V * High-Side MOSFET with 87mΩ RDS(ON) * Quiescent Supply Current: 65μA * Available with 4 Versions of Current Limits with Foldback * Rise Time: 400μS (TYP) * UVLO (Under Voltage Lockout) * Shutdown Supply Current: 1μA (MAX) * Reverse Current is not Generated when in Power Off State * Deglitched Open-Drain Over-Current Flag Output ( OC ) ORDERING INFORMATION Ordering Number US3076XG-S08-R US3176XG-S08-R US3276XG-S08-R US3376XG-S08-R Package SOP-8 SOP-8 SOP-8 SOP-8 Packing Tape Reel Tape Reel Tape Reel Tape Reel www.unisonic.com.tw Copyright © 2010 Unisonic Technologies Co., Ltd 1 of 8 QW-R502-424.b US3076-US3376 PIN CONFIGURATION GND 1 IN 2 EN1(EN1) 3 EN2(EN2) 4 Preliminary CMOS IC 8 OC1 7 OUT1 6 OUT2 5 OC2 PIN DESCRIPTION PIN NO. 1 2 3 4 5 6 7 8 PIN NAME GND IN EN1(EN1) EN2(EN2) OC2 OUT2 OUT1 OC1 DESCRIPTION Ground Input Supply: Output MOSFET Drain, which also supplies IC's internal circuitry. Connect to positive supply. Enable: Logic level enable input of switch 1. Make sure EN pin never floating. Enable: Logic level enable input of switch 2. Make sure EN pin never floating. Over-Current: Open-Drain OC output of switch 2. Switch Output: Output MOSFET Source of switch 2. Typically connect to switched side of load. Switch Output: Output MOSFET Source of switch 1. Typically connect to switched side of load. Over-Current: Open-Drain OC output of switch 1. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 8 QW-R502-424.b US3076-US3376 BLOCK DIAGRAM Preliminary CMOS IC UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 8 QW-R502-424.b US3076-US3376 ABSOLUTE MAXIMUM RATING Preliminary CMOS IC PARAMETER SYMBOL RATINGS UNIT Supply Voltage VIN 6 V Output Voltage VOUT 6 V Output Current IOUT Internally Limited A Enable Input VEN -0.3 ~ 6 V Storage Temperature TSTG -65~ +150 ℃ Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. OPERATING RATINGS PARAMETER Supply Voltage Ambient Operating Temperature SYMBOL VIN TOPR RATINGS +3 ~ +5.5 -40~ +85 UNIT V °C ELECTRICAL CHARACTERISTICS (VIN=5V, CIN=1µF, COUT=1µF, RL=10Ω,TA=25°C, Unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS Input Voltage VIN US3376, IOUT = 1.5A US3276, IOUT = 1.0A Output MOS RDS(ON) US3176, IOUT = 0.5A US3076, IOUT = 0.3A Supply Current IIN Output Turn-on Rising Time RL=10Ω, 90% Settling US3376 ITHD(LIMIT) US3276 Current Limit Threshold VOUT=4V US3176 US3076 US3376 VOUT=0V, US3276 Short-circuit Current ISC 2.7V