BQ24050 Series
1-cell, 1-A, Li-ion linear battery charger with automatic AC/USB detection
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
1-cell, 1-A, Li-ion linear battery charger with automatic AC/USB detection
| Part | Interface | Number of Cells | Battery Chemistry | Mounting Type | Fault Protection | Voltage - Supply (Max) [Max] | Operating Temperature [Min] | Operating Temperature [Max] | Battery Pack Voltage | Programmable Features | Current - Charging | Supplier Device Package | Charge Current - Max [Max] | Package / Case | Primary Attributes | Function | Embedded | Utilized IC / Part | Contents | Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ24050DSQT | USB | 1 | Lithium Ion/Polymer | Surface Mount | Over Temperature, Over Voltage, Short Circuit | 28 V | 0 °C | 125 ¯C | 4.2 V | Current | Constant - Programmable | 10-WSON (2x2) | 800 mA | 10-WFDFN Exposed Pad | ||||||
Texas Instruments BQ24050EVM | Li-Ion (1 Cell) | Battery Charger | BQ24050 | Board(s) | Power Management | |||||||||||||||
Texas Instruments BQ24050DSQR | USB | 1 | Lithium Ion/Polymer | Surface Mount | Over Temperature, Over Voltage, Short Circuit | 28 V | 0 °C | 125 ¯C | 4.2 V | Current | Constant - Programmable | 10-WSON (2x2) | 800 mA | 10-WFDFN Exposed Pad |
Key Features
• Charging1% Charge voltage accuracy10% Charge current accuracyPin selectable USB 100-mA and 500-mA maximum input current limitProgrammable termination and precharge thresholdProtection30-V Input Rating; With 6.6-V input overvoltage protectionInput voltage dynamic power management125 °C Thermal regulation; 150°C thermal shutdown protectionOUT Short-circuit protection and ISET short detectionOperation over JEITA range through battery NTC - ½ fast-charge-current at cold, 4.06 V at hotFixed 10-hour safety timerSystemAuto input source detection (D+, D– pins)No device transceiver requiredUSB FriendlyAutomatic termination and timer disable mode (TTDM) for absent battery pack with thermistorStatus indication – charging/doneAvailable in small 2-mm × 2-mm packageCharging1% Charge voltage accuracy10% Charge current accuracyPin selectable USB 100-mA and 500-mA maximum input current limitProgrammable termination and precharge thresholdProtection30-V Input Rating; With 6.6-V input overvoltage protectionInput voltage dynamic power management125 °C Thermal regulation; 150°C thermal shutdown protectionOUT Short-circuit protection and ISET short detectionOperation over JEITA range through battery NTC - ½ fast-charge-current at cold, 4.06 V at hotFixed 10-hour safety timerSystemAuto input source detection (D+, D– pins)No device transceiver requiredUSB FriendlyAutomatic termination and timer disable mode (TTDM) for absent battery pack with thermistorStatus indication – charging/doneAvailable in small 2-mm × 2-mm package
Description
AI
The BQ2405x series of devices are highly integrated Li-Ion and Li-Pol linear chargers devices targeted at space-limited portable applications. The devices operate from either a USB port or AC adapter. The high-input voltage range with input overvoltage protection supports low-cost unregulated adapters.
The BQ2405x has a single power output that charges the battery. A system load can be placed in parallel with the battery as long as the average system load does not keep the battery from charging fully during the 10-hour safety timer.
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 high accuracy current and voltage regulation loops, charge status display, and charge termination. The precharge current and termination current threshold are programmed through an external resistor. The fast charge current value is also programmable through an external resistor.
The BQ2405x series of devices are highly integrated Li-Ion and Li-Pol linear chargers devices targeted at space-limited portable applications. The devices operate from either a USB port or AC adapter. The high-input voltage range with input overvoltage protection supports low-cost unregulated adapters.
The BQ2405x has a single power output that charges the battery. A system load can be placed in parallel with the battery as long as the average system load does not keep the battery from charging fully during the 10-hour safety timer.
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 high accuracy current and voltage regulation loops, charge status display, and charge termination. The precharge current and termination current threshold are programmed through an external resistor. The fast charge current value is also programmable through an external resistor.