GMT G526-2, G526-1 Datasheet
Global Mixed-mode Technology Inc.
Dual USB High-Side Power Switch
Features
Compliant to USB specifications
Low MOSFET on resistance at 5.0V 140m
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
ΩΩΩΩ
max.
G526
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.
Ordering Information
Pin Configuration
G526
ENA
FLGA
FLGB
ENB
1
2
3
4
8 Pin SOP
8
7
6
5
OUTA
IN
GND
OUTB
PART ENABLE TEMP. RANGE PACKAGE
40°C to ＋85°C
G526-1 Active High
G526-2 Active Low
－
40°C to ＋85°C
－
8-Pin SOP
8-Pin SOP
G526
8(OUTA)
(ENA)1
(FLGA)2
(FLGB)3
(ENB)4
GATE
CONTROL
7 (IN)
GATE
CONTROL
5 (OUTB)
6 (GND)
Ver 1.1
Dec 27, 2002
1
TEL: 886-3-5788833
http://www.gmt.com.tw
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…………………………………..……1KV
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 CONDITION MIN TYP MAX UNITS
, switch off, OUT = open 25 µA
Supply Current
Enable Input Threshold
Enable Input Current
Enable Input Capacitance 1 pF
Switch Resistance
Output Turn-On Delay RL = 10Ω each output 1 ms
Output Turn-On Rise Time RL = 10Ω each output 0.5 ms
Output Turn-Off Delay RL = 10Ω each output 1 20 µs
Output Turn-Off Fall Time RL = 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
Threshold
Error Flag Off Current V
General 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
Note *
: Devices are ESD protected, however, handling precautions recommended.
has approximately 200mV of hysteresis. See control threshold charts.
Note *
, switch on, OUT = open 110 µA
Note *
low to high transition 2.4 2.5 V
high to low transition,
V
= VOH(min) = 2.4V 0.01 1 µA
EN
V
= VOL(max) = 0.8V 0.01 1 µA
EN
VIN = 5V 100 mΩ
V
= 3V 140 mΩ
IN
TJ increasing 135 °C Overtemperature shutdown
decreasing 125 °C
T
J
VIN = 5V, IL=10mA 10
= 3.3V, IL =10mA 15
V
IN
= 5V 0.01 1 µA
FLAG
V
= increasing 2.5 V UVLO Threshold
IN
= decreasing 2.3 V
V
IN
1.0 2.2 V
Note *
Ω
Ω
Error Flag Output Resistance
Pin Description
PIN NUMBER PIN NAME PIN FUNCTION
1/4 EN(A/B)
2/3 FLG(A/B)
6 GND
7 IN
8/5 OUT(A/B)
Ver 1.1
Dec 27, 2002
Enable (input)
Low input <1.9V typical (-1 active high, -2 active low). Do not float.
Fault Flag (Output)
thermal shutdown.
Ground
Supply Input
positive supply.
Switch Output
: Logic-compatible enable input. High input >2.1V typical.
: Supply return.
: Output MOSFET source. Also supplies IC's internal circuitry. Connect to
: Output MOSFET drain. Typically connect to switched side of load.
: Active-low, open-drain output. Indicates overcurrent, UVLO, and
TEL: 886-3-5788833
http://www.gmt.com.tw
2
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