BQ21040EVM-777
ActiveEVAL BOARD FOR BQ21040
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BQ21040EVM-777
ActiveEVAL BOARD FOR BQ21040
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Technical Specifications
Parameters and characteristics commom to parts in this series
| Specification | BQ21040EVM-777 | BQ21040 Series |
|---|---|---|
| Battery Chemistry | - | Lithium Ion/Polymer |
| Battery Pack Voltage | - | 4.2 V |
| Charge Current - Max | - | 800 mA |
| Contents | Board(s) | Board(s) |
| Current - Charging | - | Constant - Programmable |
| Fault Protection | - | Short Circuit, Over Temperature, Over Voltage |
| Function | Battery Charger | Battery Charger |
| Interface | - | USB |
| Mounting Type | - | Surface Mount |
| Number of Cells | - | 1 |
| Operating Temperature | - | 0 °C |
| Operating Temperature | - | 125 ¯C |
| Package / Case | - | SOT-23-6 |
| Secondary Attributes | On-Board LEDs | On-Board LEDs |
| Supplied Contents | Board(s) | Board(s) |
| Supplier Device Package | - | SOT-23-6 |
| Type | Power Management | Power Management |
| Utilized IC / Part | BQ21040 | BQ21040 |
| Voltage - Supply (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 | Bulk | 1 | $ 118.80 | |
| Digikey | Bulk | 1 | $ 118.80 | |
| Mouser Electronics | N/A | 1 | $ 118.80 | |
BQ21040 Series
1-cell, 0.8-A Li-ion and Li-polymer battery charger
| Part | Current - Charging | Interface | Package / Case | Voltage - Supply (Max) [Max] | Battery Pack Voltage | Mounting Type | Supplier Device Package | Fault Protection | Charge Current - Max [Max] | Operating Temperature [Min] | Operating Temperature [Max] | Battery Chemistry | Number of Cells | Supplied Contents | Contents | Secondary Attributes | Type | Function | Utilized IC / Part |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ21040DBVT | Constant - Programmable | USB | SOT-23-6 | 6.45 V | 4.2 V | Surface Mount | SOT-23-6 | Over Temperature, Over Voltage, Short Circuit | 800 mA | 0 °C | 125 ¯C | Lithium Ion/Polymer | 1 | ||||||
Texas Instruments BQ21040DBVR | Constant - Programmable | USB | SOT-23-6 | 6.45 V | 4.2 V | Surface Mount | SOT-23-6 | Over Temperature, Over Voltage, Short Circuit | 800 mA | 0 °C | 125 ¯C | Lithium Ion/Polymer | 1 | ||||||
Texas Instruments BQ21040EVM-777 | Board(s) | Board(s) | On-Board LEDs | Power Management | Battery Charger | BQ21040 |
Description
General part information
BQ21040 Series
The bq21040 device is a highly integrated Li-Ion and Li-Pol linear battery charger device targeted at space-limited portable applications. The device operates from either a USB port or AC adapter. The high input voltage range with input overvoltage protection supports low-cost unregulated adapters.
The bq21040 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