G528A Datasheet PDF - Global Mixed-mode Technology

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G528A
Global Mixed-mode Technology

Part Number G528A
Description USB High-Side Power Switch Advance Information
Page 8 Pages


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Global Mixed-mode Technology Inc.
G528/G528A
USB High-Side Power Switch Advance Information
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
ORDER
NUMBER
G528P1U
G528AP1U
Note: P1: SOP-8L
U: Tape & Reel
ORDER NUMBER
(Pb free)
G528P1Uf
G528AP1Uf
Pin Configuration
ENABLE
Active Low
Active High
TEMP.
RANGE
-40°C to +85°C
-40°C to +85°C
PACKAGE
SOP-8
SOP-8
Ver: 1.2
May 17, 2005
G528/G528A
GND 1
8 OUT
IN 2
7 OUT
IN 3
6 OUT
EN 4
(EN)
SOP-8
5 FLG
1
TEL: 886-3-5788833
http://www.gmt.com.tw



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Global Mixed-mode Technology Inc.
G528/G528A
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 (V EN )………………..…………-0.3V to 6V
Storage Temperature (TS)….………...-65°C to +150°C
Reflow Temperature (soldering, 10sec)……..….260°C
ESD protection*………………..…………….…….…2kV
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
CONDITION
MIN TYP MAX UNIT
IN Supply Current
**switch off, OUT = open
**switch on, OUT = open
--- 1
5
--- 100 160
µA
µA
EN Enable Threshold
low to high transition
high to low transition **
--- ---
0.8 ---
2.5
---
V
V
EN Input Current
V EN = VOH(min) = 2.5V
V EN = VOL(max) = 1.0V
--- 0.01
--- 0.01
1
1
µA
µA
EN Input Capacitance
--- 1 --- pF
Switch Resistance
OUT Turn-On Delay
OUT Turn-On Rise Time
OUT Turn-Off Delay
OUT Turn-Off Fall Time
OUT Leakage Current
VIN = 5V, IOUT = 500mA
VIN = 3.3V, IOUT = 500mA
RL = 10Ω
RL = 10Ω, CL=100µF
RL = 10Ω
RL = 10Ω
--- 110 140 mΩ
--- 130 180 mΩ
--- 0.03 --- ms
--- 0.5
--- ms
--- 1
20 µs
--- 1
20 µs
--- 1
10 µA
Short Circuit Current Limit
Enable into load
1.0 1.4 2.0
A
Circuit Limit Threshold
Ramped load applied to enabled output
2.0 2.7 3.5
A
Overtemperature Shutdown
TJ increasing
---
Threshold
TJ decreasing
---
FLG Output Resistance
VIN = 5V, IL=10mA
VIN = 3.3V, IL =10mA
---
---
FLG Off Current
VFLAG = 5V
---
UVLO Threshold
VIN = increasing
VIN = decreasing
---
---
* Devices are ESD protected, however, handling precautions are recommended.
135 ---
125 ---
10 25
15 40
0.01 1
2.5 ---
2.3 ---
°C
°C
Ω
Ω
µA
V
V
** 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
2



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Global Mixed-mode Technology Inc.
Typical Performance Characteristics
(VIN= 5V, TA=25°C, G528A, unless otherwise noted.)
Flag Delay After OC
G528/G528A
IOUT Ramp Chart
Output Turn-On Delay
Output Turn-Off Delay
Power Up (UVLO)
Power Down (UVLO)
Ver: 1.2
May 17, 2005
TEL: 886-3-5788833
http://www.gmt.com.tw
3



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Global Mixed-mode Technology Inc.
Typical Performance Characteristics
(VIN= 5V, TA=25°C, G528A, unless otherwise noted.)
G528/G528A
Turn-On Characteristics
Turn-On Characteristics
Turn-On Characteristics
Turn-On Characteristics
Short Circuit Response
(Short Applied to Output)
Ver: 1.2
May 17, 2005
TEL: 886-3-5788833
http://www.gmt.com.tw
4



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