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Dual Channel, Adjustable Current -Limited Power Switch

2016-03-0004

PT0489-5

04/29/16

1

PI5PD2560/2561

Features

 Two separate current limiting channels

 Meets USB Current-Limiting Requirement

 ±7.5% Current-Limit Accuracy at 2.8A

 Adjustable Current Limit, 250mA-2.8A (typ)

 Fast Over-current Response - 3.5μS (typ)

 44mΩ High-Side MOSFET

 Operating Range: 2.5 V to 5.5V

 2μA Maximum Standby Supply Current

 Reverse Input-Output Voltage Protection

 Built-in Soft-Start

 15 kV / 8 kV System-Level ESD Capable

 Device Package: TDFN 3x3-10L

 UL Listed – File No. E341484

 CB Certified

Applications

 USB Ports/Hubs

 Digital TV

 Set-Top Boxes

 VOIP Phones

Pin Configuration

TDFN3.0x3.0-10L(Top View)

Description

The PI5PD2560/2561 is dual-channel power-distribution

switch intended for applications where precision current

limiting is required or heavy capacitive loads and short

circuits

are

encountered.

These

devices

offer

a

programmable current-limit threshold between 250 mA

and 2.8A (typ) per channel via an external resistor. The

power-switch rise and fall times are controlled to

minimize current surges during turn on/off.

Each channel of the PI5PD2560/2561 devices limit the

output current to a safe level by switching into a

constant-current mode when the output load exceeds the

current-limit threshold.

The

FAULTx

logic

output

for

each

channel

independently asserts low during over-current or over

temperature.

Typical Application Circuit

Pin Description

Pin No.

Pin Name

Type

Description

PI5PD2560

PI5PD2561

1

GND

-

Ground.

2, 3

IN

I

Power input voltage.

4

/EN1

EN1

I

Enable input, logic low/high turns on channel one power switch.

5

/EN2

EN2

I

Enable input, logic low/high turns on channel two power switch.

6

/FAULT2

O

Active-low open-drain output, asserted during over-current or

over-temperature condition occur on channel 2

7

ILIM

I

External resistor used to set current-limit threshold; recommended

20 kΩ ≤ RILIM ≤ 187 kΩ.

8

OUT2

O

Power switch output for channel two

9

OUT1

O

Power switch output for channel one

10

/FAULT1

O

Active-low open-drain output, asserted during over-current or

over-temperature condition occur on channel 1

2

1

3

4

7

8

9

10

IN

EN1

OUT1

/FAULT1

OUT2

ILIM

5

6

EN2

/FAULT2

GND

IN

IN

O UT1

G ND

/ FAU LT1

IL IM

C2

0.1uF

C4

IN

/ FAU LT2

R1

100k

R2

100k

P ow er Pad

O UT2

R3

C3

VIN

Logic signal

C1

E N1

E N2