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PDF GM2526 Data sheet ( Hoja de datos )

Número de pieza GM2526
Descripción DUAL USB POWER SWITCH
Fabricantes Gamma 
Logotipo Gamma Logotipo



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AA
MICROELECTRONICS
Power Management
GM2526
DUAL USB PPoOwWer EMaRnaSgWemIeTnCt H
Description
GM2526 is a dual high-side integrated power switch with in-
dependent enable and flag functions, designed for self-
powered and bus-powered Universal Serial Bus (USB) ap-
plications. GM2526 requires few external components.
Each of the two switch channels supply up to 500mA as
required by USB downstream devices. Each switch’s low
on-resistance meets USB voltage drop requirements. Fault
current is 750mA (typical). A flag output indicates fault
conditions to the local USB controller. The soft-start feature
prevents the transient voltage drop on the upstream port
that can occur when the switch is enabled in bus-powered
applications. Thermal shutdown protection prevents switch
failure from high-current loads. Undervoltage lockout
(UVLO) hold GM2526 off unless there is a correct input
voltage. GM2526 has 3.3V and 5V logic-compatible Enable
inputs.
GM2526 is available in Active-High and Active-Low
versions, and comes in 8-pin DIP and SOIC packages.
Features
Compliant to USB Specifications
Two Independent Switches
Input from 3V to 5.5V
Min. Continuous Load Current 500mA per port
Max. ON-Resistance 140mW
Max. Short Circuit Current Limit 1.25A
Individual Open-Drain Fault Flag Pins
ON-State Supply Current 110µA (typ.)
OFF-State Supply Current 0.75µA (typ.)
Thermal Shutdown
Undervoltage Lockout (UVLO) Typically 2.4V
1ms Turn-ON (soft-start) and Fast Turn-OFF
Active-High or Active-Low Enable Versions
Application
USB Power Management
USB Host- and Self-Powered Hubs
USB Bus-Powered Hubs
Hot Plug-In Power Supplies
Battery-Charger Circuits
CONNECTION DIAGRAM
ENA/ ENA 1
FLGA 2
LOGIC,
CHARGE
PUMP
FLGB 3
ENB/ ENB 4
LOGIC,
CHARGE
PUMP
6
GND
GM2526 H/ L
8 OUTA
7 IN
5 OUTB
www.gammamicro.com 1
PRELIMINARY

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GM2526 pdf
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AA
MICROELECTRONICS
Power Management
GM2526
DUAL USB PPoOwWer EMaRnaSgWemIeTnCt H
ELECTRICAL CHARACTERISTICS VIN = 5V, TA = 25°C (unless otherwise noted)
CHARACTERISTICS
TEST CONDITIONS
MIN TYP MAX
Supply Current
Enable Input Threshold
Enable Input Current
Enable Input Capacitance
Switch Resistance
Output Turn- ON Delay
Output Turn- ON Rise Time
Output Turn- OFF Delay
Output Turn- OFF Fall Time
Output Leakage Current
Continuous Load Current
Short-Circuit Current Limit
Switch off, OUT= open (Note 3)
All switch on, OUT= open (Note 3)
Low-to-high transition
High-to-low transition (Note 3)
VEN= 0V to 5.5V
-
VIN= 5V , IOUT= 500mA, each switch
VIN= 2.7V, IOUT= 500mA, each switch
RL= 10W each output
RL= 10W each output
RL= 10W each output
RL= 10W each output
each output (output disabled)
each output
each output (enable into load)= 4.0V
-
-
-
0.8
-1.0
-
-
-
-
-
-
-
-
0.5
0.5
0.75
110
2.1
1.9
±0.01
1
100
140
0.5
1
1
1
-
-
0.75
5
160
2.4
-
1.0
-
140
180
-
-
20
20
10
-
1.25
Current-Limit Threshold
ramped load applied to enabled
output, VOUT 4.0V
- 1.6 2.2
Overtemperature Shutdown
Threshold
Error Flag Output Resistance
Error Flag Off Current
UVLO Threshold
TJ increasing
TJ decreasing
VIN =5V, IL =10mA
VIN =3.3V, IL =10mA
VFLG =5V
VIN = increasing
VIN =decreasing
- 135 -
- 125 -
- 10 25
- 15 40
- 0.01 1
- 2.5 -
- 2.3 -
Note 1: Exceeding the absolute maximum rating may damage the device.
Note 2: The device is not guaranteed to function outside its operating rating.
Note 3: Off is 0.8V and on is 2.4V for the GM2526-H. Off is 2.4V and on is
The enable input has approximately 200mV of hysteresis.
0.8V for the GM2526-L.
UNIT
µA
V
µA
pF
mW
ms
ms
µs
µs
µA
A
A
A
°C
W
µA
V
5

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