Exar XRP2523 User Manual

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October 2012

Rev. 1.0.0

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U1 XRP2523

FLG

3

EN1OUT

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

2

ENA1OUTA

8

GND

6

IN

7

OUTB

5

FLGB

3

VOUTB

VLA

CLB1

DNP

VOUTA

VIN

ENA

VLB

R3

DNP

FLGA

CLA2

0.1uF

FLGB

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 V

power distribution, the

BUS

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 V
 Output current/load range: 0 – 1.5A

: 3.2V – 6.5V

IN

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

Exar Corporation www.exar.com
48720 Kato Road, Fremont CA 94538, USA Tel. [phone] – Fax. [phone]

Fig. 1: XRP2523 Evaluation Board Schematic

XXRRPP22552233

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OUT

FLG IN

EN

GND

1

2

3 4

5

XRP2523

SOT-23-5

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

PIN ASSIGNMENT

PIN DESCRIPTION – XRP2523

Fig. 2: XRP2523 Pin Assignment

ORDERING INFORMATION

Refer to XRP2523’s datasheet and/or www.exar.com for exact and up to date ordering information.

© 2012 Exar Corporation 2/8 Rev. 1.0.0

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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

USING THE EVALUATION BOARD

Note: The XRP2523 evaluation board is

common with Exar’s XRP2524 and XRP2526

evaluation boards.

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

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.

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 I

Enable pin must be pulled up HIGH to enable
the IC. Connect the load to the VOUT and

TYPICAL PERFORMANCE CHARACTERISTICS

All data taken at VIN = 5V, CIN = 1µF, C
from Application Information section of this datasheet.

= 22µF//0.1µF, TJ = TA = 25°C, unless otherwise specified - Schematic and BOM

OUT

of up to 1.5A.

OUT

© 2012 Exar Corporation 3/8 Rev. 1.0.0