G526-1

Global Mixed-mode Technology Inc. G526 Dual USB High-Side Power Switch Features Compliant to USB specifications Low MOSFET on resistance at 5.0V 140mΩ max. per channel 500mA minimum continuous load current per channel 3.0V to 5.5V input 110µA typical on-state supply current 1µA typical off-state supply current Output can be forced higher than input (off-state) 1.25A maximum current limit Thermal shutdown 2.4V typical undervoltage lockout (UVLO) Open-drain fault flag pins 1ms turn-on (soft-start) and fast turnoff Available with active-high or active-low enable Description The G526 is a dual integrated high-side power switch with independent enable and flag functions, optimized for self-powered and bus-powered Universal Serial Bus (USB) applications. The G526 satisfies the following USB requirements: the switch's low on-resistance meets USB voltage drop requirements; fault current is limited to typically 750mA, well below the UL 25VA safety requirement; and flag outputs are available to indicate fault conditions to the local USB controller. Soft start eliminates the momentary voltage drop on the upstream port that may occur when the switch is enabled in bus-powered applications. Additional features include thermal shutdown to prevent catastrophic switch failure from high-current loads, under-voltage lockout (UVLO) ensuring 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. The G526 is available in active-high and active-low enable versions in 8-pin SOIC packages. Applications USB host and self-powered hubs Bus-powered hubs Hot plug-in power supplies Battery-charger circuits Ordering Information PART G526-1 G526-2 ENABLE Active High Active Low TEMP. RANGE －40°C to ＋85°C －40°C to ＋85°C PACKAGE 8-Pin SOP 8-Pin SOP Pin Configuration G526 ENA FLGA FLGB ENB 1 2 3 4 8 Pin SOP 8 7 6 5 OUTA (ENA)1 IN GND OUTB (FLGA)2 (FLGB)3 (ENB)4 G526 8(OUTA) GATE CONTROL 7 (IN) GATE CONTROL 5 (OUTB) 6 (GND) Ver 1.0 Dec 26, 2000 TEL: 886-3-5788833 http://www.gmt.com.tw 1 Global Mixed-mode Technology Inc. Absolute Maximum Ratings Supply Voltage (VIN)..…………………..………….+6.0V Fault Flag Voltage (VFLG)..………………………..+6.0V Fault flag current (IFLG)..……….………………….50mA Output Voltage (VOUT)..…….……………..….…..+6.0V Output Current (IOUT)………………...Internally Limited Control Input (VEN).…………………….……-0.3V to 6V Storage Temperature (TS)…………….-65°C to +150°C Lead Temperature (Soldering 5 sec.)……..…..…260°C ESD protection…………………………………..……2KV G526 Operating Ratings Supply Voltage (VIN).……………………...+3V to +5.5V Ambient Operating Temperature (TA)…-40°C to +85°C Thermal Resistance SOIC (θJA)………………….……………….160°C/W Electrical Characteristics(VIN=+5V; TA=25°C; unless noted.) PARAMETER Supply Current Enable Input Threshold Enable Input Current Enable Input Capacitance Switch Resistance Output Turn-On Delay Output Turn-On Rise Time Output Turn-Off Delay Output Turn-Off Fall Time Output Leakage Current Short Circuit Current Limit Overtemperature shutdown Threshold Error Flag Output Resistance Error Flag Off Current UVLO Threshold VIN = 5V VIN = 3V RL = 10Ω each output RL = 10Ω each output RL = 10Ω each output RL = 10Ω each output each output each output TJ increasing TJ decreasing VIN = 5V, IL=10mA VIN = 3.3V, IL =10mA VFLAG = 5V VIN = increasing VIN = decreasing CONDITION Note *, switch off, OUT = open Note *, switch on, OUT = open low to high transition high to low transition, Note * VEN = VOH(min) = 2.4V VEN = VOL(max) = 0.8V MIN TYP 25 110 2.4 2.2 0.01 0.01 1 100 140 1 0.5 1 1 0.75 135 125 10 15 0.01 2.5 2.3 MAX UNITS µA µA V V µA µA pF mΩ mΩ ms ms µs µs µA A °C °C Ω Ω µA V V 2.5 1 1 1.0 0.5 20 20 10 1.25 1 General Note: Devices are ESD protected, however, handling precautions recommended. Note *: Off is ≤ 1.0 and on is ≥2.4V for the G526-1. Off is ≥ 2.4V and on is ≤ 1.0V for the G526-2. The enable input has approximately 200mV of hysteresis. See control threshold charts. Pin Description PIN NUMBER 1/4 2/3 6 7 8/5 PIN NAME EN(A/B) FLG(A/B) GND IN OUT(A/B) PIN FUNCTION Enable (input): Logic-compatible enable input. High input >2.1V typical. Low input