Silego Technology, Inc.

Rev 1.0

000-00055587-10

Revised October 7, 2011

USB Host Charger Identification

Analog Switches

SLG55587

SLG55587A

Block Diagram

General Description

The SLG55587/SLG55587A is a USB device that combines

high speed USB switches with a USB host charger (dedicated

charger) identification circuit. The device supports both the

latest USB Battery Charging Specification Revision 1.2 in-

cluding data contact detection and a set resistor bias for Ap-

ple compliant devices as well as legacy USB D+/D- short de-

tection using data line pull-up.

The SLG55587/SLG55587A can also support Apple IPAD2

@ 2 A charging current.

The SLG55587/SLG55587A can also support low speed / full

speed mouse/keyboard wake-up from S3 mode.

Features

•

High Speed USB Switching

•

Low 4.0pF (typ) On Capacitance

•

Low 4.0

Ω (typ) On Resistance

•

Low 0.5

Ω (typ) On Resistance Flatness

•

4.5V to 5.5V Supply Range

•

Low Supply Current

•

Automatic Current-Limit Switch Control

•

Automatic USB Charger Identification Circuit

•

Apple IPAD2 @ 2 A charging current support

•

Pb-Free / RoHS Compliant

•

Halogen-Free

•

TDFN-8 Package

Pin Configuration - SLG55587

Pin Configuration - SLG55587A

VDD

GND

TDP

TDM

CB

DP

DM

CEN#

2

3

45

6

7

8

1

Thermal Pad

connected to GND

TDFN-8

(Top View)

VDD

GND

TDP

TDM

CB

DP

DM

CEN

2

3

45

6

7

8

1

Thermal Pad

connected to GND

TDFN-8

(Top View)

FSM Logic

One Shot

+

-

+

-

CEN#

or CEN

CB

DM

DP

+

-

FET

TDP

TDM

Resistor

Divider

Resistor

Divider