The bqSWITCHER™ series are highly integrated Li-ion and Li-polymer switch-mode charge management devices targeted at a wide range of portable applications. The bqSWITCHER™ series offers integrated synchronous PWM controller and power FETs, high-accuracy current and voltage regulation, charge preconditioning, charge status, and charge termination, in a small, thermally enhanced VQFN package. The system-controlled version provides additional inputs for full charge management under system control.
The bqSWITCHER™ charges the battery in three phases: conditioning, constant current, and constant voltage. Charge is terminated based on user- selectable minimum current level. A programmable charge timer provides a safety backup for charge termination. The bqSWITCHER™ automatically restarts the charge cycle if the battery voltage falls below an internal threshold. The bqSWITCHER™ automatically enters sleep mode when VCC supply is removed.
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Part number | 立即下单 | Number of series cells | Function | Cell chemistry | Charge current (Max) (A) | Operating Vin (Min) (V) | Operating Vin (Max) (V) | Absolute Vin (safety rating) (Max) ((V)) | Battery charge voltage (Min) (V) | Battery charge voltage (Max) (V) | Features | Control interface | Control topology | Rating | Operating temperature range (C) | Package Group | Package size: mm2:W x L (PKG) |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BQ24103 |
|
1
2 |
Charger | Li-Ion/Li-Polymer | 2 | 4.35 | 16 | 20 |
4.2
8.4 |
4.2
8.4 |
Integrated FET
OVP Temp Monitoring (Thermistor Pin) |
Standalone (RC-Settable) | Switch-Mode Buck | Catalog | -40 to 85 | VQFN | 20 | 20VQFN: 16 mm2: 3.5 x 4.5 (VQFN | 20) |
BQ24100 |
|
1 | Charger | Li-Ion/Li-Polymer | 2 | 4.35 | 16 | 20 | 4.2 | 4.2 |
OVP
Temp Monitoring (Thermistor Pin) |
Standalone (RC-Settable) | Switch-Mode Buck | Catalog | -40 to 85 | VQFN | 20 | 20VQFN: 16 mm2: 3.5 x 4.5 (VQFN | 20) |
BQ24103A |
|
1
2 |
Charger | Li-Ion/Li-Polymer | 2 | 4.35 | 16 | 20 |
4.2
8.4 |
4.2
8.4 |
Integrated FET
OVP Temp Monitoring (Thermistor Pin) |
Standalone (RC-Settable) | Switch-Mode Buck | Catalog | -40 to 85 | VQFN | 20 | 20VQFN: 16 mm2: 3.5 x 4.5 (VQFN | 20) |
BQ24104 |
|
1
2 |
Charger | Li-Ion/Li-Polymer | 2 | 4.35 | 16 | 20 |
4.2
8.4 |
4.2
8.4 |
Integrated FET
OVP Temp Monitoring (Thermistor Pin) |
Standalone (RC-Settable) | Switch-Mode Buck | Catalog | -40 to 85 | VQFN | 20 | 20VQFN: 16 mm2: 3.5 x 4.5 (VQFN | 20) |
BQ24105 |
|
1
2 3 |
Charger |
Li-Ion/Li-Polymer
Lithium Phosphate/LiFePO4 |
2 | 4.35 | 16 | 20 | 2.1 | 15.5 |
Integrated FET
OVP Temp Monitoring (Thermistor Pin) |
Standalone (RC-Settable) | Switch-Mode Buck | Catalog | -40 to 85 | VQFN | 20 | 20VQFN: 16 mm2: 3.5 x 4.5 (VQFN | 20) |
BQ24108 | 无样片 | 1 | Charger | Li-Ion/Li-Polymer | 2 | 4.35 | 16 | 20 | 4.2 |