LP8727

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SNVS898A – OCTOBER 2012 – REVISED MAY 2013

Micro/Mini USB Interface with Integrated 28V Charger

Check for Samples: LP8727

1

FEATURES

APPLICATIONS

2

•

USB Multiplexing Switches

•

GSM, GPRS, EDGE, CDMA & WCDMA

handsets

–

High-Speed USB on USB and UART Inputs

•

Portable Media Players / MP3 Players

–

Negative Voltage Rail on Audio Inputs

–

Internal LDO for ID Detection and MIC Bias

DESCRIPTION

–

Compatible with USB Charging

The

LP8727

is

designed

to

provide

automatic

Specification Rev. 1.1

multiplexing

switches

between

Micro/Mini

USB

–

DSS Input for Default Switch Connection

connector and USB, UART and Audio paths in

cellular phone applications. It also contains a single-

–

Low-Power MIC Standby Mode

input Li-Ion battery charger and an overvoltage-

•

Linear Charge with Single Input

–

28 OVP on VBUS Input

compatible

Serial

Interface

allowing

control

of

charger, multiplexing switches, and reading status

–

High-Current Mode for Production Test

information of the device.

–

Thermal Regulation

The multiplexing switches on USB and UART support

•

Over-Voltage Protected LDO for USB

high-speed USB, and Audio inputs can be driven to

Transceivers and PMU Wakeup

negative voltage rail. The LP8727 is compatible with

•

UVLO (Undervoltage Lock Out)

USB charging specifications rev 1.1 from USB IF.

•

Interrupt Request to Reduce SW Polling

The Li-Ion charger requires few external components

–

USB / ID Detection

and integrates the power FET. Charging is thermally

–

SEND / END Button Detection

regulated to obtain the most efficient charging rate for

a given ambient temperature. It has Overvoltage

–

Mic Removal

Protection (OVP) circuit at the charger input protects

–

OVLO / UVLO on VBUS

the PMU from input voltages up to +28V, eliminating

–

Charger Status

the need for any external protection circuitry.

•

Thermal Shutdown Protection

An overvoltage-protected LDO which can supply up

•

to 50 mA is designed for powering up a low-voltage

USB transceiver or waking up a PMU (Power

•

25-Bump 0.4 mm Pitch Thin DSBGA Package

Management Unit) when an external power source

(either USB VBUS or wall adapter) is connected to

the USB connector.

The LP8727 PMU is available in 25-bump 0.4 mm

pitch thin DSBGA package (2.015 mm x 2.015 mm).

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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

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PRODUCTION DATA information is current as of publication date.

Copyright © 2012–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.