BQ24091DGQT
Active1-CELL, 1-A, LI-ION BATTERY CHARGER WITH 100KΩ NTC
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BQ24091DGQT
Active1-CELL, 1-A, LI-ION BATTERY CHARGER WITH 100KΩ NTC
Technical Specifications
Parameters and characteristics for this part
| Specification | BQ24091DGQT |
|---|---|
| Battery Chemistry | Lithium Ion/Polymer |
| Battery Pack Voltage | 4.2 V |
| Charge Current - Max [Max] | 1 A |
| Current - Charging | Constant - Programmable |
| Fault Protection | Over Temperature, Short Circuit, Over Voltage |
| Interface | USB |
| Mounting Type | Surface Mount |
| Number of Cells | 1 |
| Operating Temperature [Max] | 125 ¯C |
| Operating Temperature [Min] | 0 °C |
| Package / Case | 10-PowerTFSOP, 10-MSOP |
| Package / Case | 3 mm, 0.118 in |
| Programmable Features | Current |
| Supplier Device Package | 10-HVSSOP |
| Voltage - Supply (Max) [Max] | 6.45 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 1.97 | |
| 10 | $ 1.77 | |||
| 25 | $ 1.67 | |||
| 100 | $ 1.42 | |||
| Digi-Reel® | 1 | $ 1.97 | ||
| 10 | $ 1.77 | |||
| 25 | $ 1.67 | |||
| 100 | $ 1.42 | |||
| Tape & Reel (TR) | 250 | $ 1.33 | ||
| 500 | $ 1.17 | |||
| 1250 | $ 0.97 | |||
| 2500 | $ 0.90 | |||
| 6250 | $ 0.87 | |||
| Texas Instruments | SMALL T&R | 1 | $ 1.63 | |
| 100 | $ 1.25 | |||
| 250 | $ 0.92 | |||
| 1000 | $ 0.66 | |||
Description
General part information
BQ24091 Series
The BQ2409x 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 BQ2409x 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.
Documents
Technical documentation and resources
