BQ24130_15 Datasheet, PDF (1/29 Pages) Texas Instruments – 600-kHz Synchronous Switch-Mode Host-ControlledBattery/Supercapacitor Charger With 4-A Integrated MOSFETs

bq24130
www.ti.com
SLUSAN2C – JULY 2011 – REVISED JUNE 2012
600-kHz Synchronous Switch-Mode Host-Controlled
Battery/Supercapacitor Charger With 4-A Integrated MOSFETs
Check for Samples: bq24130
FEATURES
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•2 600kHz Synchronous Switch-mode Charger
with 4 A Integrated N-MOSFETs
• Up to 96% Efficiency
• 30 V Input Rating with 18V Overvoltage
Protection
– 4.5 V to 17 V Input Operating Range
• Battery Charge Voltage
– 1, 2,or 3-Cell With 4.2V/Cell
• Constant Current Super Capacitor Charging
• High Integration
– Integrated 20-V Switching MOSFETs
– Integrated Bootstrap Diode
– Internal Loop Compensation
– Internal Digital Soft Start
• Safety
– Thermal Regulation Loop Throttles Back
Current to Limit T_J = 120°C
– Thermal Shutdown
– Battery Thermistor Sense Hot/Cold Charge
Suspend
– Input Overvoltage Protection
– Cycle by Cycle Current Limit
• Accuracy
– ±0.5% Charge Voltage Regulation
– ±4% Charge Current Regulation
• Less than 15 µA Battery Current with Adapter
Removed
• Small QFN Package
– 3.5 mm x 4.5 mm QFN-20 pin
APPLICATIONS
• Tablet PC
• Netbook and Ultra-Mobile Computers
• Portable Data Capture Terminals
• Portable Printers
• Medical Diagnostics Equipment
• Battery Bay Chargers
• Back-Up Systems
• Li-Ion/Li-Polymer Battery and Super Capacitor
Applications
SW
SW
PVCC
PVCC
AVCC
STAT
TS
CMOD
VREF
AGND
bq24130
PGND
PGND
BTST
REGN
ISET2
SRP
SRN
BAT
ISET1 CELL
DESCRIPTION
The bq24130 is an integrated host-controlled Li-ion and Li-polymer switch-mode battery charge controllers with
two integrated N-channel power MOSFETs. It offers a constant-frequency synchronous PWM controller with high
accuracy regulation of charge current and voltage. The fast charge and precharge current can be either
hardwired with resistors or programmed by system power management microcontroller using a DAC or GPIOs.
Battery remote sensing provides accurate charge voltage regulation.
The bq24130 monitors the battery pack temperature to allow charger only in a preset temperature window. The
thermal regulation loop reduces the charge current to maintain the junction temperature of 120ºC during
operation.
The bq24130 automatically enters a low-quiescent current sleep mode when the input voltage falls below the
battery voltage. The bq24130 charges one, two or three cell (selected by CELL pin), supporting up to 4 A charge
current. The bq24130 is available in a 20-pin, 3.5 x 4.5 mm² thin QFN package.
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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 © 2011–2012, Texas Instruments Incorporated