G528 GMT | Alldatasheet
Document overview
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Technical content
Features
Typical 110mΩ, 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
(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 G528/G528A EN (EN) GND OUT OUT SOP-8 OUT FLG IN IN G528/G528A EN (EN) GND OUT OUT SOP-8 OUT FLG IN IN
Ver: 1.2 May 17, 2005 TEL: 886-3-5788833 http://www.gmt.com.tw G528/G528AGlobal Mixed-mode Technology Inc. Absolute Maximum Ratings Output Current (IOUT).…………………Internally Limited Storage Temperature (TS)….………...-65°C to +150°C Reflow Temperature (soldering, 10sec)……..….260°C Operating Ratings Operating Temperature (TA)…………….-40°C to +85°C Thermal Resistance Electrical Characteristics (VIN=+5V; TA=25°C.) PARAMETER CONDITION MIN TYP MAX UNIT switch off, OUT = open --- 1 5 µA IN Supply Current switch on, OUT = open --- 100 160 µA low to high transition --- --- 2.5 V EN Enable Threshold high to low transition ** 0.8 --- --- V V EN = VOH(min) = 2.5V --- 0.01 1 µA EN Input Current V EN = V OL(max) = 1.0V --- 0.01 1 µA EN Input Capacitance --- 1 --- pF VIN = 5V, IOUT = 500mA --- 110 140 mΩ Switch Resistance VIN = 3.3V, IOUT = 500mA --- 130 180 mΩ OUT Turn-On Delay RL = 10Ω --- 0.03 --- ms OUT Turn-On Rise Time RL = 10Ω, CL=100µF --- 0.5 --- ms OUT Turn-Off Delay RL = 10Ω --- 1 20 µs OUT Turn-Off Fall Time RL = 10Ω --- 1 20 µs OUT Leakage Current --- 1 10 µA Short Circuit Current Limit E nable into load 1.0 1.4 2.0 A Circuit Limit Threshold Ramped load app lied to enabled output 2.0 2.7 3.5 A TJ increasing --- 135 --- °C Overtemperature Shutdown Threshold TJ decreasing --- 125 --- °C VIN = 5V, IL=10mA --- 10 25 Ω FLG Output Resistance VIN = 3.3V, IL =10mA --- 15 40 Ω FLG Off Current V FLAG = 5V --- 0.01 1 µA VIN = increasing --- 2.5 --- V UVLO Threshold VIN = decreasing --- 2.3 --- V * Devices are ESD protected, however, handling precautions are recommended. ** For the G528/G528A, off is ≥ 2.5V and on is ≤ 0.8V. The enable input, EN has approximately 200mV of hys- teresis.
Ver: 1.2 May 17, 2005 TEL: 886-3-5788833 http://www.gmt.com.tw G528/G528AGlobal Mixed-mode Technology Inc. Typical Performance Characteristics (VIN= 5V, TA=25°C, G528A, unless otherwise noted.) Power Up (UVLO) Power Down (UVLO) Flag Delay After OC IOUT Ramp Chart Output Turn-On Delay Output Turn-Off Delay
Ver: 1.2 May 17, 2005 TEL: 886-3-5788833 http://www.gmt.com.tw G528/G528AGlobal Mixed-mode Technology Inc. Typical Performance Characteristics (VIN= 5V, TA=25°C, G528A, unless otherwise noted.) Turn-On Characteristics Short Circuit Response (Short Applied to Output) Turn-On Characteristics Turn-On Characteristics Turn-On Characteristics
Ver: 1.2 May 17, 2005 TEL: 886-3-5788833 http://www.gmt.com.tw G528/G528AGlobal Mixed-mode Technology Inc. Pin Description PIN G528 G528A NAME PIN FUNCTION 1 1 GND Ground. 2,3 2,3 IN Input Supply: Output MOSFET source, which also supplies IC's internal circuitry. Connect to positive supply. 4 EN Active-low switch enable input. A logic low turns on the switch. 4 EN Active-High switch enable input. A logic High turns on the switch. 5 5 FLG Open-Drain Fault Flag (Output): Active-low, open-drain output. Indicates overcurrent, thermal shutdown and UVLO. 6,7,8 6,7,8 OUT Switch Output: Output MOSFET drain. Typically connect to switched side of load. Typical Applications Single-Port Self-Powered USB Hub Application Function Block Diagrams Upstream V 100mA max. VBUS GND Data GND IN OUT
3.3 V USB Controller
＋ USB Port Data GND Ferrite Beads GND 150µF G911 EN 0.1µF VCC VBUS 100mA max. D GND Data GND IN OUT VIN ON/OFF OUT GND ＋ USB Port Data VBUS Ferrite Beads 1µF GND 150µF 1µF EN 0.1µF OC FLG 5.0V 10K 100K IN Upstream V 100mA max. VBUS GND Data GND IN OUT ＋ USB Port Data GND Ferrite Beads GND 150µF G911 EN 0.1µF VCC VBUS 100mA max. D GND Data GND IN OUT VIN ON/OFF OUT GND ＋ USB Port Data VBUS Ferrite Beads 1µF GND 150µF 1µF EN 0.1µF OC FLG 5.0V 10K 100K IN Upstream V 100mA max. VBUS GND Data GND IN OUT ＋ USB Port Data GND Ferrite Beads GND 150µF G911 EN 0.1µF VCC VBUS 100mA max. D GND Data GND IN OUT VIN ON/OFF OUT GND ＋ USB Port Data VBUS Ferrite Beads 1µF GND 150µF 1µF EN 0.1µF OC FLG 5.0V 10K 100K IN Clock BandGap Reference UVLO Thermal Sense Overcurrent Limiting Gate Control Current SenseCMP IN OUT FLG EN GND Clock BandGap Reference UVLO Thermal Sense Overcurrent Limiting Gate Control Current SenseCMP IN OUT FLG EN GND
G528/G528AGlobal Mixed-mode Technology Inc. inhibit turn-on of the output transistors. rent will flow from VOUT to VIN. functions only when the switch is enabled. 0.5A through the output MOSFET. limit threshold, the output MOSFET switch is shut off. a constant-current mode, reducing the output voltage. See the "Enable into Short Circuit" graph. FLG is a 2-channel, open-drain MOSFET output. strongly recommended to control supply transients. inductance) to damage internal control circuitry. Figure 1. Supply Bypassing
Ver: 1.2 May 17, 2005 TEL: 886-3-5788833 http://www.gmt.com.tw G528/G528AGlobal Mixed-mode Technology Inc.
Package Information
Note: 1. Package body sizes exclude mold flash and gate burrs 2. Dimension L is measured in gage plane 3. Tolerance 0.10mm unless otherwise specified 4. Controlling dimension is millimeter converted inch dimensions are not necessarily exact. DIMENSION IN MM DIMENSION IN INCH Taping Specification PACKAGE Q’TY/REEL SOP-8 2,500 ea GMT Inc. does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and GMT Inc. reserves the right at any time without notice to change said circuitry and specifications. Feed Direction Typical SOP Package Orientation Feed Direction Typical SOP Package Orientation D E H 7 ° (4X) A2 A e B y C L θ D E H 7 ° (4X) A2 A e B y C L θ