TPS65471 Datasheet, PDF (1/32 Pages) Texas Instruments – SINGLE-CHIP POWER AND BATTERY MANAGEMENT IC FOR Li-ION POWERED SYSTEMS

TPS65471
www.ti.com
SLVSBE8 – JUNE 2012
SINGLE-CHIP POWER AND BATTERY MANAGEMENT IC FOR
Li-ION POWERED SYSTEMS
Check for Samples: TPS65471
FEATURES
1
•2 40-Pin QFN package (6 mm x 6 mm) With
PowerPAD™
• Integrated Dynamic Power Path Circuitry
(VBUS, VAC, VBAT) With Power Good Signal
Outputs and Reverse Current Protection
• 550-mA Li-Ion Battery Charger With 2 State
Pins and Safety Timers
• Integrated 4.25-V Synchronous Boost
Converter (PWM) and LDO to Provide Voltage
Source for LEDs
• 4 LDOs for Each Function in the System
• USB Suspend Mode
• Reset Output
• 3 LED Drivers With PWM Control
• Integrated 3.0-V LDO Regulators
• Integrated 3.2-V LDO Regulators
• A Motor Driver Control
• LDO Regulators and Boost Converter On/Off
Control
• Status Outputs to Indicate the Status of the
Linear Charger
• Reverse Current Prevention and Thermal Shut
Down Circuitry
APPLICATIONS
• Handheld Devices
DESCRIPTION/ORDERING INFORMATION
TPS65471 integrates a Li-ion linear charger, power path management, four LDO regulators, 4.25-V synchronous
boost converter and 4.25-V LDO regulator, three LED drivers and one motor driver.
With the power path circuitry, USB-port, AC-DC adapter and Li-ion battery power can be switched seamlessly as
the power source of 3.2-V LDO output regulators. This prevents instability in the system.
The TPS65471 charger automatically selects the USB port or the AC-DC adapter.
The EN_VLDO digital input is used to turn the output of VLED4P25, VLD02 and VLD04 on or off.
The EN_VLDO3 digital input is used to turn the output of VLDO3 on or off.
The TPS65471 is available in a 40-pin QFN package with PowerPAD™.
T_J
–10°C to 125°C
PACKAGE ⁽²⁾
RHA (QFN)
ORDERING INFORMATION⁽¹⁾
ORDERABLE PART NUMBER
TPS65471RHA
TOP-SIDE MARKING
TPS65471
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPAD is a trademark of Texas Instruments.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2012, Texas Instruments Incorporated