Exar XRP2523 User manual

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XR RP P2 25 52 23 3
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1. .5 5A A S Si in ng gl le e C Ch ha an nn ne el l U US SB B 3 3. .0 0 P Po ow we er r D Di is st tr ri ib bu ut ti io on n S Sw wi it tc ch h
October 2012
Rev. 1.0.0
Exar Corporation www.exar.com
48720 Kato Road, Fremont CA 94538, USA Tel. [phone] –Fax. [phone]
GENERAL DESCRIPTION
The Exar XRP2523 Evaluation board (EVB) is a
full assembled and tested surface-mount PCB
that demonstrates the XRP2523 single-channel
integrated high-side power distribution
switches.
Optimized for USB VBUS power distribution, the
XRP2523 is compliant with the latest USB 3.0
specification and can be used in any self or
bus powered USB applications. It is provided
with an enable pin while an error flag is
available to indicate fault conditions.
XRP2523 is offered in a RoHS compliant
“green”/halogen free 5-pin SOT-23 package.
STANDARD CONFIGURATION
The XRP7659EVB evaluation board is
configured to operate under the following
conditions and parameters:
Input voltage range VIN: 3.2V –6.5V
Output current/load range: 0 –1.5A
E
EV VA AL LU UA AT TI IO ON N B BO OA AR RD D M MA AN NU UA AL L
FEATURES
1.5A Single Channel Current Switch
1.5A continuous load current
1.6A Over-current Limit
3.2V to 6.5V Input Voltage Range
USB 2.0 and USB 3.0 Compliant
Active High Enable
Soft Start
Channel Fault Flag Indicator
9ms Blanking Time
UVLO, Reverse Current, Short circuit
and Thermal Shutdown Protection
EVALUATION BOARD SCHEMATICS
Fig. 1: XRP2523 Evaluation Board Schematic
U1 XRP2523
FLG
3
EN
1OUT 5
IN 4
GND
2
VIN= 3.2V - 6.5V
CLB2
DNP
R2 DNP
R4 DNP
R1 10k
CIN1
DNP GND
CLA1
22uF
CIN2
1uF
ENB
U2 DNP
ENB
4
FLGA
2ENA
1OUTA 8
GND 6
IN 7
OUTB 5
FLGB
3
VOUTB
VLA
CLB1
DNP
VOUTA
VIN
ENA
VLB
R3 DNP
FLGA
CLA2
0.1uF
FLGB

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XR RP P2 25 52 23 3
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1. .5 5A A S Si in ng gl le e C Ch ha an nn ne el l U US SB B 3 3. .0 0 P Po ow we er r D Di is st tr ri ib bu ut ti io on n S Sw wi it tc ch h
© 2012 Exar Corporation 2/8 Rev. 1.0.0
PIN ASSIGNMENT
OUT
FLG IN
EN
GND
1
2
3 4
5
XRP2523
SOT-23-5
Fig. 2: XRP2523 Pin Assignment
PIN DESCRIPTION –XRP2523
Name
Pin Number
Description
EN
1
Channel Enable Input
GND
2
Ground Signal
FLG
3
Error Flag Signal
Active low open drain output. Active on over-current, over-temperature, short-circuit or UVLO
conditions.
IN
4
Voltage Input Pin
OUT
5
Voltage Output Pin
ORDERING INFORMATION
Refer to XRP2523’s datasheet and/or www.exar.com for exact and up to date ordering information.

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XR RP P2 25 52 23 3
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1. .5 5A A S Si in ng gl le e C Ch ha an nn ne el l U US SB B 3 3. .0 0 P Po ow we er r D Di is st tr ri ib bu ut ti io on n S Sw wi it tc ch h
© 2012 Exar Corporation 3/8 Rev. 1.0.0
USING THE EVALUATION BOARD
Note: The XRP2523 evaluation board is
common with Exar’s XRP2524 and XRP2526
evaluation boards.
INITIAL SETUP
The Board is supplied from EXAR with the
XRP2523 device. Set the input supply to a
voltage between 3.2V to 6.5V and connect it
to VIN and GND connectors on the right side
of the evaluation board.
Enable pin must be pulled up HIGH to enable
the IC. Connect the load to the VOUT and
PGND connectors on the right hand side of the
board.
Flag pin is pulled up to VIN through a 10kΩ
resistor (provided by default on the board) or
can be instead connected to a separate
external power supply voltage VLA.
The board will power-up upon turning on the
input supply and reach the desired output
voltage. The board can operate with a load
current IOUT of up to 1.5A.
TYPICAL PERFORMANCE CHARACTERISTICS
All data taken at VIN = 5V, CIN = 1µF, COUT = 22µF//0.1µF, TJ = TA= 25°C, unless otherwise specified - Schematic and BOM
from Application Information section of this datasheet.
Fig. 3: Output On-Resistance vs. Supply Voltage
Fig. 4: Output On-Resistance vs. Temperature
Fig. 5: ON-State Supply Current vs. Supply Voltage
Fig. 6: ON-State Supply Current vs. Temperature
0
10
20
30
40
50
60
70
3 3.5 4 4.5 5 5.5 6 6.5
On-State Supply Current (µA)
Supply Voltage (V)
Ta = 25°C

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XR RP P2 25 52 23 3
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© 2012 Exar Corporation 4/8 Rev. 1.0.0
Fig. 7: Current Limit Threshold vs. Supply Voltage
XRP2526 (2-channels on)
Fig. 8: Current Limit Threshold vs. Temperature
Fig. 9: Flag Delay Time vs. Supply Voltage
Fig. 10: Flag Delay Time vs. Temperature
Fig. 11: Enable Threshold vs. Supply Voltage
Fig. 12: UVLO Threshold Voltage vs. Temperature

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XR RP P2 25 52 23 3
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1. .5 5A A S Si in ng gl le e C Ch ha an nn ne el l U US SB B 3 3. .0 0 P Po ow we er r D Di is st tr ri ib bu ut ti io on n S Sw wi it tc ch h
© 2012 Exar Corporation 5/8 Rev. 1.0.0
Fig. 13: Output Rising Time vs. Temperature
Fig. 14: Short circuit protection, VIN = 5.0V
Fig. 15: Turn-On/Off Characteristics: COUT=1uF, Rload=10Ω
Fig. 16: Turn-On/Off Characteristics: COUT=1uF,Rload=5.1Ω
Fig. 17: Current Limit Operation: VIN = 5V, Rload = 2.5Ω
Fig. 18: Current Limit Operation: VIN = 5.2V, Rload = 2.5Ω

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XR RP P2 25 52 23 3
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1. .5 5A A S Si in ng gl le e C Ch ha an nn ne el l U US SB B 3 3. .0 0 P Po ow we er r D Di is st tr ri ib bu ut ti io on n S Sw wi it tc ch h
© 2012 Exar Corporation 6/8 Rev. 1.0.0
EVALUATION BOARD SCHEMATICS
U1 XRP2523
FLG
3
EN
1OUT 5
IN 4
GND
2
VIN= 3.2V - 6.5V
CLB2 DNP
R2 DNP R4 DNP
R1 10k
CIN1
DNP GND
CLA1 22uF
CIN2 1uF
ENB
U2 DNP
ENB
4
FLGA
2ENA 1OUTA 8
GND 6
IN 7
OUTB 5
FLGB
3
VOUTB
VLA
CLB1 DNP
VOUTA VIN
ENA VLB
R3 DNP
FLGA
CLA2 0.1uF
FLGB

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XR RP P2 25 52 23 3
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1. .5 5A A S Si in ng gl le e C Ch ha an nn ne el l U US SB B 3 3. .0 0 P Po ow we er r D Di is st tr ri ib bu ut ti io on n S Sw wi it tc ch h
© 2012 Exar Corporation 7/8 Rev. 1.0.0
BILL OF MATERIAL
Ref.
Qty
Manufacturer
Part Number
Size
Component
EVAL BD
1
Exar Corp.
146-6693-01
XRP2523 Evaluation Board
U1
1
Exar Corp.
XRP2523
5-pin SOT-23
XRP2523
U2
Not populated
CIN1, CLB1, CLB2
Not populated
CIN2
1
Murata Corp.
GRM188R71E105KA12D
0603
Ceramic 1uF, 25V, X7R
CLA1
1
Murata Corp.
GRM31CR61C226KE15L
1206
Ceramic 22uF, 16V, X5R
CLA2
1
Murata Corp.
GRM188R71H104KA93D
0603
Ceramic 0.1uF, 50V, X7R
R1
1
Panasonic Corp.
ERJ-3EKF1002V
0603
Resistor 10KΩ, 1/10W, 1%
R2, R3, R4
Not populated
Test Point, VIN, GND, PGND,
VOUTA, VOUTB, ENA, ENB,
FLGA, FLGB, VLA, VLB
12
VECTOR
K24C/M
0.042”
diameter
Test Point Post
EVALUATION BOARD LAYOUT
Fig. 19: Component Placement –Top Side
Fig. 20: Top Side Layout
Fig. 21: Bottom Side Layout

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XR RP P2 25 52 23 3
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1. .5 5A A S Si in ng gl le e C Ch ha an nn ne el l U US SB B 3 3. .0 0 P Po ow we er r D Di is st tr ri ib bu ut ti io on n S Sw wi it tc ch h
© 2012 Exar Corporation 8/8 Rev. 1.0.0
DOCUMENT REVISION HISTORY
Revision
Date
Description
1.0.0
10/10/2012
Initial release of evaluation board manual
BOARD REVISION HISTORY
Board Revision
Date
Description
146-6693-01
10/10/2012
Initial release of evaluation board
FOR FURTHER ASSISTANCE
Email: customersuppor[email protected]m
[e-mail]
Exar Technical Documentation: http://www.exar.com/TechDoc/default.aspx?
EXAR CORPORATION
HEADQUARTERS AND SALES OFFICES
48720 Kato Road
Fremont, CA 94538 –USA
Tel.: [phone]
Fax: [phone]
www.exar.com
NOTICE
EXAR Corporation reserves the right to make changes to the products contained in this publication in order to improve
design, performance or reliability. EXAR Corporation assumes no responsibility for the use of any circuits described herein,
conveys no license under any patent or other right, and makes no representation that the circuits are free of patent
infringement. Charts and schedules contained herein are only for illustration purposes and may vary depending upon a
user’s specific application. While the information in this publication has been carefully checked; no responsibility, however,
is assumed for inaccuracies.
EXAR Corporation does not recommend the use of any of its products in life support applications where the failure or
malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect its
safety or effectiveness. Products are not authorized for use in such applications unless EXAR Corporation receives, in
writing, assurances to its satisfaction that: (a) the risk of injury or damage has been minimized; (b) the user assumes all
such risks; (c) potential liability of EXAR Corporation is adequately protected under the circumstances.
Reproduction, in part or whole, without the prior written consent of EXAR Corporation is prohibited.