G525A1

Global Mixed-mode Technology Inc. G525A USB High-Side Power Switch Advance Information Features Typical 110mΩ , Low MOSFET on resistance, at 5.0V 1A minimum continuous load current 3.0V to 5.5V operating range 100 µA typical on-state supply current 1 µA 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 activehigh or active-low version UL Approved_#E232223 General Description The G525A is an integrated high-side power switch optimized for self-powered and bus-powered Universal Serial Bus (USB) applications. The G525A satisfies the USB standards. The switch's low on-resistance meets USB voltage drop requirements. When the output load exceeds current-limit threshold, G525A switches into constant mode and limit the output current to a safe level, which is typically 1.4A, well below the UL 25VA safety requirements. An open-drain flag output is also 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. Besides, a thermal shutdown circuit is included to prevent catastrophic switch failure caused by increasing 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. The G525A is a UL recognized component and is available in active-high and active-low versions in 8-pin SOP packages. 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 Ordering Information PART G525A1 G525A2 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 G525A EN FLG GND NC 1 2 3 4 8 7 6 5 OUT IN OUT NC 3 (GND) (EN)1 (FLG)2 Gate Control 7 (IN) G525A G525A 6,8 (OUT) 8 Pin SOP 8 Pin Function Block R UL Recognized Component Ver: 1.2 Nov 11, 2002 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 Enable Input (VEN)……………………………-0.3V to 6V Storage Temperature (TS)….………....-65°C to +150°C Lead Temperature (Soldering 5 sec.)……………260°C ESD protection*………………..…………….……….2kV G525A Operating Ratings Supply Voltage (VIN).……………………….+3V to +5.5V Operating Temperature (TA)…………….-40°C to +85°C Thermal Resistance SOIC (θJA)……………………………………160°C/W Electrical Characteristics (VIN=+5V; TA=25°C.) PARAMETER IN Supply Current EN Enable Threshold EN Input Current EN Input Capacitance Switch Resistance OUT Turn-On Delay OUT Turn-On Rise Time OUT Turn-Off Delay OUT Turn-Off Fall Time OUT Leakage Current Short Circuit Current Limit Circuit Limit Threshold Overtemperature Shutdown Threshold FLG Output Resistance FLG Off Current UVLO Threshold VIN = 5V , IOUT = 500mA VIN = 3.3V , IOUT = 500mA RL = 10Ω RL = 10Ω, CL=100µF RL = 10Ω RL = 10Ω Enable into load Ramped load applied to enabled output TJ increasing TJ decreasing VIN = 5V, IL=10mA VIN = 3.3V, IL =10mA VFLAG = 5V VIN = increasing VIN = decreasing 1.0 2.0 CONDITION **switch off, OUT = open **switch on, OUT = open low to high transition high to low transition ** VEN = VOH(min) = 2.5V VEN = VOL(max) = 1.0V MIN TYP 1 100 MAX 5 160 2.5 1 1 140 180 UNITS µA µA V V µA µA pF mΩ mΩ ms ms µs µs µA A A °C °C Ω Ω µA V V 0.8 0.01 0.01 1 110 130 0.03 0.5 1 1 1 1.4 2.7 135 125 10 15 0.01 2.5 2.3 20 20 10 2.0 3.5 25 40 1 * Devices are ESD protected, however, handling precautions are recommended. ** For the G525A1, off is ≤ 1.0 and on is ≥2.5V. For the G525A2, off is ≥ 2.5V and on is ≤ 1.0V. The enable input, CTRL, has approximately 200mV of hysteresis. Pin Description PIN NUMBER 1 2 3 4,5 7 6,8 PIN NAME EN FLG GND NC IN OUT PIN FUNCTION Enable (input): Logic level enable input. High input >2.4V typical. Low input