BQ25040 Series
1.1-A, single-input, single cell Li-ion battery charger With 50mA LDO in 2x3 QFN
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
1.1-A, single-input, single cell Li-ion battery charger With 50mA LDO in 2x3 QFN
| Part | Utilized IC / Part | Function | Primary Attributes | Type | Supplied Contents | Embedded | Supplier Device Package | Mounting Type | Charge Current - Max [Max] | Voltage - Supply (Max) [Max] | Number of Cells | Package / Case | Current - Charging | Battery Chemistry | Operating Temperature [Min] | Operating Temperature [Max] | Battery Pack Voltage | Fault Protection |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ25040EVM | BQ25040 | Battery Charger | Li-Ion (1 Cell) | Power Management | Board(s) | |||||||||||||
Texas Instruments BQ25040DQCT | 10-WSON (3x2) | Surface Mount | 1.1 A | 6.7 V | 1 | 10-WFDFN Exposed Pad | Constant - Programmable | Lithium Ion | 0 °C | 125 ¯C | 4.2 V | Over Temperature, Over Voltage |
Key Features
• 30V Input Rating, with Overvoltage Protection (OVP)Input Voltage Dynamic Power Management Feature50mA Integrated Low Dropout Linear Regulator (LDO)1% Charge Voltage Regulation Accuracy10% Charge Current AccuracySingle-Input Interface Selects USB 100mA, 500mA or User-Programmable Maximum Input Current Limit4.2V at 2.3A Production Test ModeThermal Regulation and Thermal Shutdown Protection for Output Current ControlSoft-Start Feature to Reduce Inrush CurrentStatus Indication - Power Good and Charging/DoneAvailable in Small 2mm × 3mm DFN-10 PackageAPPLICATIONSMobile PhonesSmart PhonesPortable Media PlayersPortable Navigation DevicesLow-Power Handheld Devices30V Input Rating, with Overvoltage Protection (OVP)Input Voltage Dynamic Power Management Feature50mA Integrated Low Dropout Linear Regulator (LDO)1% Charge Voltage Regulation Accuracy10% Charge Current AccuracySingle-Input Interface Selects USB 100mA, 500mA or User-Programmable Maximum Input Current Limit4.2V at 2.3A Production Test ModeThermal Regulation and Thermal Shutdown Protection for Output Current ControlSoft-Start Feature to Reduce Inrush CurrentStatus Indication - Power Good and Charging/DoneAvailable in Small 2mm × 3mm DFN-10 PackageAPPLICATIONSMobile PhonesSmart PhonesPortable Media PlayersPortable Navigation DevicesLow-Power Handheld Devices
Description
AI
The bq25040 is an integrated Li-ion linear battery charger targeted at space-limited portable applications. It operates from either a USB port or AC adapter and charges a single cell Li-Ion battery with up to 1.1A of charge current.
The bq25040 has a single power output that charges the battery. A system load can be placed in parallel with the battery. The charge current is programmed using the ISET and EN/SET inputs. The input current limit is programmable to USB100, USB500 or a user programmed current limit up to 1.1A. Additionally, a 4.9V ±3% 50mA LDO is integrated into the IC for supplying low power external circuitry. The single-input interface (EN/SET) is used to select the charge current and to place the bq25040 into Production Test Mode. In Production Test Mode, the bq25040 operates as a linear regulator without a battery connected, where the output is regulated at 4.2V and supplies up to 2.3A to calibrate GSM transceivers.
The battery is charged in three phases: conditioning, constant current and constant voltage. In all charge phases, an internal control loop monitors the IC junction temperature and reduces the charge current if an internal temperature threshold is exceeded.
The charger power stage and charge current sense functions are fully integrated. The charger function has accuracy current and voltage regulation loops, charge status display, and charge termination.
The bq25040 is an integrated Li-ion linear battery charger targeted at space-limited portable applications. It operates from either a USB port or AC adapter and charges a single cell Li-Ion battery with up to 1.1A of charge current.
The bq25040 has a single power output that charges the battery. A system load can be placed in parallel with the battery. The charge current is programmed using the ISET and EN/SET inputs. The input current limit is programmable to USB100, USB500 or a user programmed current limit up to 1.1A. Additionally, a 4.9V ±3% 50mA LDO is integrated into the IC for supplying low power external circuitry. The single-input interface (EN/SET) is used to select the charge current and to place the bq25040 into Production Test Mode. In Production Test Mode, the bq25040 operates as a linear regulator without a battery connected, where the output is regulated at 4.2V and supplies up to 2.3A to calibrate GSM transceivers.
The battery is charged in three phases: conditioning, constant current and constant voltage. In all charge phases, an internal control loop monitors the IC junction temperature and reduces the charge current if an internal temperature threshold is exceeded.
The charger power stage and charge current sense functions are fully integrated. The charger function has accuracy current and voltage regulation loops, charge status display, and charge termination.