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2015-08-0009

PT0514-4

08/24/15

2

PI5USB2544

USB Charging Port Controller and Detection Power Switch

Pin Description

Pin #

Name

Type

Description

1

IN

P

Input voltage and supply voltage; connect 0.1μF or greater ceramic capacitor from

IN to GND as close to the device as possible

2

DM_OUT

I/O

D- Data line to USB host controller.

3

DP_OUT

I/O

D+ data line to USB host controller.

4

ILIM_SEL

I

Logic-level input signal used to control the charging mode, current limit threshold,

and load detection, see the control truth table. Can be tied directly to IN or GND

without pull-up or pull-down resistor.

5

EN

I

Logic-level input for turning the power switch and the signal switches on/off, logic

low turns off the signal and power switches and holds OUT in discharger. Can be

tied directly to IN or GND without pull-up or pull-down resistor.

6

CTL1

I

Logic-level inputs used to control the charging mode and signal switches; see the

control truth table. Can be tied directly to IN or GND without pull-up or pull-down

resistor.

7

CTL2

I

8

CTL3

I

9

NC

--

Connect to GND or leave open.

10

DP_IN

I/O

D+ data line to downstream connector

11

DM_IN

I/O

D- data line to downstream connector.

12

OUT

P

Power-switch output

13

FAULT

O

Active-low open-drain output, asserted when over-temperature or current limit

conditions

14

GND

G

Ground connection

15

ILIM_LO

I

External resistor connection used to set the low current-limit threshold and the load

detection current threshold. A resistor to ILIM_LO is optional; see Current-Limit

Settings.

16

ILIM_HI

I

External resistor connection used to set the high current-limit threshold.

NA

Exposed PAD

G

Internally connected to GND. Thermal pad to heat-sink the part to the circuit board.

* I = Input; O = Output; P = Power; G = Ground