SP2525A
Single Channel USB Power Distribution Switch
November 2011
Rev. 2.1.0
GENERAL DESCRIPTION
The SP2525A device is an integrated high-side
power switch ideal for self-powered and bus-
powered
Universal
Serial
Bus
(USB)
applications.
The high-side switches are MOSFETs with
70mΩ R
DS(ON)
, which meets USB voltage drop
requirements for maximum transmission wire
length. Multi-purpose open-drain fault flag
output indicates over-current limiting, thermal
shutdown, or under voltage lockout. Output
current is typically limited to 0.85A below the
5A safety requirement, and the thermal
shutdown function shuts the switch off to
prevent damage under overcurrent conditions.
Guaranteed minimum output rise time limits
inrush current during hot plug-in, minimizing
EMI and preventing the voltage at the
upstream port from dropping excessively.
The SP2525A is offered in a RoHS compliant
“green”/halogen free 8-pin NSOIC package.
APPLICATIONS
Self Powered USB 2.0 and 3.0 Hubs
USB Compliant V
BUS
Power Distribution
Audio-Video Equipments
Generic Power Switching
FEATURES
+3.0V to +5.5V Input Voltage Range
500mA Continuous Load Current
per Channel
2.6V Undervoltage Lockout
1.25A Short Circuit Current Limit
100mΩ Maximum On-Resistance
75μA On-State Supply Current
1μA Shutdown Current
Output can be Forced Higher than
Input (Off-State)
Thermal Shutdown
Slow Turn On and Fast Turn Off
Active-high Version: SP2525A-1
Active-low Version: SP2525A-2
RoHS Compliant, Green/Halogen Free
8-Pin NSOIC Package
TYPICAL APPLICATION DIAGRAM
Fig. 1: SP2525A Application Diagram – Single Port Self Powered Hub
Exar Corporation
48720 Kato Road, Fremont CA 94538, USA
www.exar.com
Tel. +1 510 668-7000 – Fax. +1 510 668-7001
SP2525A
Single Channel USB Power Distribution Switch
ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation of
the device at these ratings or any other above those
indicated in the operation sections of the specifications
below is not implied. Exposure to absolute maximum
rating conditions for extended periods of time may affect
reliability.
Supply Voltage V
IN
................................................. 7.0V
Fault Flag Voltage V
FLG
............................................ 7.0V
Fault Flag Current I
FLG
........................................... 50mA
Enable Input V
EN
......................................... -0.3V to 15V
Storage Temperature .............................. -65°C to 150°C
Power Dissipation (NSOIC-8) .........................................
(derate 6.14mW/°C above 70°C)...................... 500mW
OPERATING RATINGS
Ambient Temperature Range ..................... -40°C to 85°C
ELECTRICAL SPECIFICATIONS
Specifications with standard type are for an Operating Ambient Temperature of T
A
= 25°C only; limits applying over the full
Operating Junction Temperature range are denoted by a “•”. Minimum and Maximum limits are guaranteed through test,
design, or statistical correlation. Typical values represent the most likely parametric norm at T
A
= 25°C, and are provided
for reference purposes only. Unless otherwise indicated, V
IN
= 5.0V, T
A
= 25°C.
Parameter
Supply Current
Enable Input Voltage
Enable Input Current
Enable Input Capacitance
Output MOSFET Resistance
Output turn-on delay
Output turn-on rise time
Output turn-off delay
Output turn-off fall time
Output Leakage Current
Current limit threshold
Over temperature shutdown
threshold
Error Flag Output Resistance
Error Flag Current
UVLO threshold
0.6
1.0
135
125
10
15
0.01
2.6
2.4
25
40
1
Ω
µA
V
V
IN
increasing
V
IN
decreasing
0.8
Min.
Typ.
0.75
75
1.7
2.0
0.01
0.01
1
70
100
1000
0.8
0.7
4000
20
20
10
1.25
100
2.4
1
1
Max.
5.0
100
Units
µA
V
µA
pF
mΩ
µs
µs
µs
µs
µA
A
°C
Temperature T
J
raising
Temperature T
J
decreasing
V
IN
=5V, I
L
=10mA
V
IN
=3.3V, I
L
=10mA
R
L
=10Ω, each output
R
L
=10Ω, each output
R
L
=10Ω, each output
R
L
=10Ω, each output
Conditions
V
EN
= Logic “0” OUT =open
V
EN
= Logic “1” OUT =open
V
EN
= Logic “0”
V
EN
= Logic “1”
V
EN
= Logic “0”
V
EN
= Logic “1”
© 2011 Exar Corporation
2/10
Rev. 2.1.0
SP2525A
Single Channel USB Power Distribution Switch
BLOCK DIAGRAM
Fig. 2: SP2525A Block Diagram
PIN ASSIGNMENT
Fig. 3: SP2525A Pin Assignment
PIN DESCRIPTION
Name
EN
FLG
GND
NC
IN
OUT
Pin Number
1
2
3
4
5, 7
6, 8
Description
Enable Input Active High for SP2525A-1 and Active Low for SP2525A-2
An active-low and open-drained fault flag output for power switch. It can indicate
current limit if CTL is active. In normal mode operation, it also can indicate
thermal shutdown or under voltage
Chip Power Ground
Not Internally Connected
Power Supply Input
MOSFET Switch Output
© 2011 Exar Corporation
3/10
Rev. 2.1.0
SP2525A
Single Channel USB Power Distribution Switch
ORDERING INFORMATION
Part Number
SP2525A-1EN-L
SP2525A-1EN-L/TR
SP2525A-2EN-L
SP2525A-2EN-L/TR
Temperature
Range
-40°C≤T
A
≤+85°C
-40°C≤T
A
≤+85°C
-40°C≤T
A
≤+85°C
-40°C≤T
A
≤+85°C
Marking
Sipex
2525A-1E
YYWWL
Sipex
2525A-2E
YYWWL
Package
NSOIC8
Packing
Quantity
Bulk
Note 1
Note 2
Enable
Active high
Enable Active
Low
RoHS Compliant
2.5K/Tape & Reel Halogen Free
RoHS Compliant
2.5K/Tape & Reel Halogen Free
Bulk
NSOIC8
“YY” = Year – “WW” = Work Week – “X” = Lot Number
© 2011 Exar Corporation
4/10
Rev. 2.1.0
SP2525A
Single Channel USB Power Distribution Switch
TYPICAL PERFORMANCE CHARACTERISTICS
All data taken at V
IN
= 5.0V, T
A
= 25°C, unless otherwise specified - Schematic and BOM from Application Information
section of this datasheet.
Fig. 4: Output On-Resistance vs Supply Voltage
Fig. 5: Output On-Resistance vs Temperature
Fig. 6: UVLO Threshold vs Temperature
Fig. 7: On-state Supply Current vs Supply Voltage
Fig. 8: On-state Supply Current vs Temperature
Fig. 9: Off-state Supply Current vs Supply Voltage
© 2011 Exar Corporation
5/10
Rev. 2.1.0
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