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BQ25040DQCR
1.1A, Single-Input, Single Cell Li-Ion Battery Charger With 50mA LDO in 2x3 QFN
1FEATURES
APPLICATIONS
DESCRIPTION
LDO
BAT
DC+
GND
Adaptor
APPLICATION SCHEMATIC
25040 R2
1mF
IFULL
1kW
1kW 10
3,72
bq25040
www.ti.com...................................................................................................................................................... SLUS910B–MARCH 2009–REVISED MARCH 2009
1.1A, Single-Input, Single Cell Li-Ion Battery
With 50mA LDO and 30V Input Rating, with Overvoltage Protection
(OVP) Input Voltage Dynamic Power Management
Feature 50mA Integrated Low Dropout Linear
Regulator (LDO)•
1% Charge Voltage Regulation Accuracy Phones•
10% Charge Current Accuracy•
Single-Input Interface Selects USB 100mA,500mAor User-Programmable Maximum InputCurrent Limit 4.2Vat 2.3A Production Test Mode Thermal Regulation and Thermal Shutdown
Protection for Output Current ControlThe bq25040is an integrated Li-ion linear battery charger targeted
operates from eithera USB portor AC adapter and chargesa single cell
current.
The bq25040 hasa single power output that charges the battery.A system
the battery. The charge currentis programmed using the and
programmableto USB100, USB500ora user programmed limit
50mA LDOis integrated into the IC for supplying low external
(EN/SET)is usedto select the charge current andto the
Production Test Mode, the bq25040 operatesasa linear regulator without regulatedat 4.2V and suppliesupto 2.3Ato calibrate GSM
