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What is G526-1?

This electronic component, produced by the manufacturer "Global Mixed-mode Technology", performs the same function as "Dual USB High-Side Power Switch".


G526-1 Datasheet PDF - Global Mixed-mode Technology

Part Number G526-1
Description Dual USB High-Side Power Switch
Manufacturers Global Mixed-mode Technology 
Logo Global Mixed-mode Technology Logo 


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Global Mixed-mode Technology Inc.
G526
Dual USB High-Side Power Switch
Features
„Compliant to USB specifications
„Low MOSFET on resistance at 5.0V 140mmax.
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
G526-1
G526-2
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
ENA 1
FLGA 2
G526
8 OUTA
7 IN
FLGB 3
6 GND
ENB 4
5 OUTB
8 Pin SOP
G526
(ENA)1
(FLGA)2
GATE
CONTROL
(FLGB)3
(ENB)4
GATE
CONTROL
6 (GND)
8(OUTA)
7 (IN)
5 (OUTB)
Ver 1.0
Dec 26, 2000
TEL: 886-3-5788833
http://www.gmt.com.tw
1

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G526-1 equivalent
Global Mixed-mode Technology Inc.
G526
VBUS
USB Hub
G526
1 ENA
2
FLGA
4.7
µF
3
FLGB
4
ENB
OUTA
IN
GND
OUTB
8
7
6
5
USB
Controller
CBULK
USB
Function
USB
Function
GND
Cable
USB Peripheral
CBULK
Figure 3. Inrush Current-Limit Application
Enable Input
EN must be driven logic high or logic low, or be pulled
high or low for a clearly defined input. Floating the
input may cause unpredictable operation. EN should
not be allowed to go negative with respect to GND.
Soft Start
The G526 presents a high impedance when off, and
slowly becomes a low impedance as it turns on. This
reduces inrush current and related voltage drop that
results from charging a capacitive load, satisfying the
USB voltage drop requirements, for bus-powered ap-
plications as shown in Figure 2.
The soft start circuit shown in Figure 3 can be utilized
to meet USB transient regulation specifications with
large load capacitances (CBULK >10µF). The G526
will provide inrush current limiting for these applica-
tions.
Transient Overcurrent Filter
V
USB Controller
OVERCURRENT
10k
10k
0.1 µF
G526
1 ENA OUTA 8
2
FLGA
7
IN
3 FLGB
6
GND
4 ENB OUTB 5
Figure 4. Transient Filter
The inrush current from the connection of a heavy ca-
pacitive load may cause the fault flag to fall for a short
duration while the switch is in a constant-current mode,
for charging the capacitance. In needed, a simple 1ms
RC low-pass filter in series with the fault flag circuit
will prevent erroneous overcurrent reporting (see Fig-
ure 4).
Ver 1.0
Dec 26, 2000
TEL: 886-3-5788833
http://www.gmt.com.tw
5


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Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for G526-1 electronic component.


Information Total 6 Pages
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Featured Datasheets

Part NumberDescriptionMFRS
G526-1The function is Dual USB High-Side Power Switch. ETCETC
G526-1The function is Dual USB High-Side Power Switch. Global Mixed-mode TechnologyGlobal Mixed-mode Technology
G526-2The function is Dual USB High-Side Power Switch. ETCETC

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