BQ24704RGER
ActiveHOST-CONTROLLED MULTI-CHEMISTRY BATTERY CHARGER WITH LOW INPUT POWER DETECT AND LOW IQ 24-VQFN -40 TO 125
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BQ24704RGER
ActiveHOST-CONTROLLED MULTI-CHEMISTRY BATTERY CHARGER WITH LOW INPUT POWER DETECT AND LOW IQ 24-VQFN -40 TO 125
Technical Specifications
Parameters and characteristics commom to parts in this series
| Specification | BQ24704RGER | BQ24704 Series |
|---|---|---|
| Battery Chemistry | Lithium Ion/Polymer | Lithium Ion/Polymer |
| Battery Pack Voltage [Max] | 18 V | 18 V |
| Charge Current - Max [Max] | 8 A | 8 A |
| Current - Charging | Constant - Programmable | Constant - Programmable |
| Fault Protection | Over Current, Over Voltage, Over Temperature | Over Current, Over Voltage, Over Temperature |
| Function | - | Battery Charger |
| Mounting Type | Surface Mount | Surface Mount |
| Number of Cells [Max] [custom] | 4 | 4 |
| Number of Cells [Min] [custom] | 2 | 2 |
| Operating Temperature [Max] | 125 ¯C | 125 ¯C |
| Operating Temperature [Min] | -40 °C | -40 °C |
| Package / Case | 24-VFQFN Exposed Pad | 24-VFQFN Exposed Pad |
| Supplied Contents | - | Board(s) |
| Supplier Device Package | 24-VQFN (4x4) | 24-VQFN (4x4) |
| Type | - | Power Management |
| Utilized IC / Part | - | BQ24705 |
| Voltage - Supply (Max) [Max] | 24 V | 24 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 | 39 | $ 7.82 | |
| Tape & Reel (TR) | 3000 | $ 7.18 | ||
| Digikey | Tape & Reel (TR) | 3000 | $ 7.00 | |
| Mouser Electronics | N/A | 3000 | $ 7.00 | |
| Rochester Electronics | N/A | 1 | $ 7.52 | |
| 25 | $ 7.37 | |||
| 100 | $ 7.07 | |||
| 500 | $ 6.77 | |||
| 1000 | $ 6.39 | |||
| Texas Instruments | LARGE T&R | 1 | $ 9.97 | |
| 100 | $ 8.13 | |||
| 250 | $ 6.39 | |||
| 1000 | $ 5.42 | |||
| Verical | N/A | 41 | $ 9.21 | |
| 41 | $ 9.21 | |||
| 100 | $ 8.84 | |||
| 100 | $ 8.84 | |||
| 500 | $ 8.46 | |||
| 500 | $ 8.46 | |||
| 1000 | $ 7.99 | |||
| 1000 | $ 7.99 | |||
BQ24704 Series
Host-Controlled Multi-Chemistry Battery Charger with Low Input Power Detect and low Iq
| Part | Current - Charging | Voltage - Supply (Max) [Max] | Package / Case | Battery Chemistry | Fault Protection | Operating Temperature [Max] | Operating Temperature [Min] | Number of Cells [Max] [custom] | Number of Cells [Min] [custom] | Supplier Device Package | Charge Current - Max [Max] | Mounting Type | Battery Pack Voltage [Max] | Utilized IC / Part | Type | Function | Supplied Contents |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ24704RGER | Constant - Programmable | 24 V | 24-VFQFN Exposed Pad | Lithium Ion/Polymer | Over Current, Over Temperature, Over Voltage | 125 ¯C | -40 °C | 4 | 2 | 24-VQFN (4x4) | 8 A | Surface Mount | 18 V | ||||
Texas Instruments BQ24704EVM | BQ24705 | Power Management | Battery Charger | Board(s) | |||||||||||||
Texas Instruments BQ24704RGET | Constant - Programmable | 24 V | 24-VFQFN Exposed Pad | Lithium Ion/Polymer | Over Current, Over Temperature, Over Voltage | 125 ¯C | -40 °C | 4 | 2 | 24-VQFN (4x4) | 8 A | Surface Mount | 18 V |
Description
General part information
BQ24704 Series
The bq24704 is a high-efficiency, synchronous battery charger with integrated compensation offering low component count for space-limited Li-Ion and Li-Polymer battery charging applications. Charge current and voltage programming allows high regulation accuracies, and can be either hardwired with resistors, or programmed by the system power-management microcontroller using a DAC or GPIOs.
The bq24704 charges two, three, or four series Li+ cells, supporting up to 8 A of charge current, and is available in a 24-pin, 4x4-mm thin QFN package.
The bq24704 features Dynamic Power Management (DPM) and input power limiting. These features reduce battery charge current when the input power limit is reached to avoid overloading the AC adapter when supplying the load and the battery charger simultaneously. A highly-accurate current-sense amplifier enables precise measurement of input current from the AC adapter to monitor the overall system power.