G526 ETC | Alldatasheet
Document overview
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Technical content
Features
Compliant to USB specifications Low MOSFET on resistance at 5.0V 140m ΩΩΩΩ 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
Applications
USB host and self-powered hubs Bus-powered hubs Hot plug-in power supplies Battery-charger circuits
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 condi- tions 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 pre- vent catastrophic switch failure from high-current loads, under-voltage lockout (UVLO) ensuring that the device remains off unless there is a valid input voltage pre- sent, 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.
Ordering Information
PART ENABLE TEMP. RANGE PACKAGE G526-1 Active High －40°C to ＋85°C 8-Pin SOP G526-2 Active Low －40°C to ＋85°C 8-Pin SOP Pin Configuration GATE CONTROL GATE CONTROL G526 (ENA)1 (FLGA)2 (FLGB)3 (ENB)4 8(OUTA) 7 (IN) 5 (OUTB) 6 (GND) G526 ENA FLGA FLGB ENB OUTA IN GND OUTB
8 Pin SOP
Ver 1.0 Dec 26, 2000 TEL: 886-3-5788833 http://www.gmt.com.tw G526 Global Mixed-mode Technology Inc. Absolute Maximum Ratings Output Current (IOUT)………………...Internally Limited Storage Temperature (TS)…………….-65°C to +150°C Operating Ratings Ambient Operating Temperature (TA)…-40°C to +85°C Thermal Resistance Electrical Characteristics(VIN=+5V; TA=25°°°°C; unless noted.) PARAMETER CONDITION MIN TYP MAX UNITS Note *, switch off, OUT = open 25 µA Supply Current Note *, switch on, OUT = open 110 µA low to high transition 2.4 2.5 V Enable Input Threshold high to low transition, Note * 1.0 2.2 V VEN = VOH(min) = 2.4V 0.01 1 µA Enable Input Current VEN = VOL(max) = 0.8V 0.01 1 µA Enable Input Capacitance 1 pF VIN = 5V 100 m Ω Switch Resistance VIN = 3V 140 m Ω Output Turn-On Delay R L = 10Ω each output 1 ms Output Turn-On Rise Time R L = 10Ω each output 0.5 ms Output Turn-Off Delay R L = 10Ω each output 1 20 µs Output Turn-Off Fall Time R L = 10Ω each output 1 20 µs Output Leakage Current each output 10 µA Short Circuit Current Limit each output 0.5 0.75 1.25 A TJ increasing 135 °C Overtemperature shutdown Threshold TJ decreasing 125 °C VIN = 5V, IL=10mA 10 Ω Error Flag Output Resistance VIN = 3.3V, IL =10mA 15 Ω Error Flag Off Current V FLAG = 5V 0.01 1 µA VIN = increasing 2.5 V UVLO Threshold VIN = decreasing 2.3 V General Note: Devices are ESD protected, however, handling precautions recommended. has approximately 200mV of hysteresis. See control threshold charts. Pin Description PIN NUMBER PIN NAME PIN FUNCTION 1/4 EN(A/B) Enable (input): Logic-compatible enable input. High input >2.1V typical. Low input <1.9V typical (-1 active high, -2 active low). Do not float. 2/3 FLG(A/B) Fault Flag (Output): Active-low, open-drain output. Indicates overcurrent, UVLO, and thermal shutdown. 6 GND Ground: Supply return. 7 IN Supply Input: Output MOSFET source. Also supplies IC's internal circuitry. Connect to positive supply. 8/5 OUT(A/B) Switch Output: Output MOSFET drain. Typically connect to switched side of load.
Ver 1.0 Dec 26, 2000 TEL: 886-3-5788833 http://www.gmt.com.tw G526 Global Mixed-mode Technology Inc. Typical Applications Block Diagrams Functional Description The G526-1 and G526-2 are dual high-side switches with active-high and active-low enable inputs, respec- tively. Fault conditions turn off or inhibit turn-on one or both of the output transistors, depending upon the type of fault, and activate the open-drain error flag transistors to pull FLG pin to ground. Input and Output IN (input) is the power supply connection to the logic circuitry and the source of the output MOSFET. OUTx (output) is the drain of the output A or B MOSFET. In a typical circuit, current flows through the switch from IN to OUT toward the load. The output MOSFET and driver circuitry are also de- signed to allow the MOSFET drain to be externally forced to a higher voltage than the source (V OUT > VIN) when the output is off. In this situation, the G526 avoids undesirable drain-to-body diode current flow by connecting the body to the most positive voltage. If V OUT >VIN when switch is enabled, current will flow from VOUT to VIN. Thermal Shutdown Thermal shutdown shuts off both output MOSFETs and signals both fault flags if the die temperature ex- ceeds 135°C. 10°C of hystersis prevents the switch from turning on until the die temperature drops to 125°C. Overtemperature detection functions only when at least one switch is enabled. OUTA OUTB GND ENB ENA CHARGE PUMP CHARGE PUMP OSC. THERMAL SHUTDOWN UVLO 1.2V REFERENCE GATE CONTROL GATE CONTROL CURRENT LIMIT CURRENT LIMIT FLGA IN FLGB G526 Upstream VBUS 100mA max. VBUS GND Data GND IN OUT 3.3V USB Controller VIN ON/OFF OVERCURRENT OVERCURRENT ON/OFF G526 ENA OUTA FLGA FLGB ENB IN GND OUTB VCC 5.0V 47µF 0.1µF USB Port1 USB Port2 Data (Two Pair) VBUS GND VBUS GND Ferrite Beads10k 10k 100k 100k 1µF 1µF 47µF
Ver 1.0 Dec 26, 2000 TEL: 886-3-5788833 http://www.gmt.com.tw G526 Global Mixed-mode Technology Inc.
Package Information
Note: Package body sizes exclude mold flash and gate burrs Dimension L is measured in gage plane Tolerance 0.10mm unless otherwise specified 4. Controlling dimension is millimeter converted inch dimensions are not necessarily exact. D E H 7 ° (4X) A2 A e B y C L θ