BQ24751ARHDT
ActiveHOST CONTROLLED 2-4 CELL BUCK BATTERY CHARGE CONTROLLER WITH SYSTEM POWER SELECTOR WITH LOW IQ
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BQ24751ARHDT
ActiveHOST CONTROLLED 2-4 CELL BUCK BATTERY CHARGE CONTROLLER WITH SYSTEM POWER SELECTOR WITH LOW IQ
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Technical Specifications
Parameters and characteristics commom to parts in this series
| Specification | BQ24751ARHDT | BQ24751 Series |
|---|---|---|
| Battery Chemistry | Multi-Chemistry | Multi-Chemistry |
| Battery Pack Voltage | 18.04 V | 18.04 - 18.048 V |
| Charge Current - Max [Max] | 10 A | 10 A |
| Current - Charging | Constant - Programmable | Constant - Programmable |
| Fault Protection | Over Voltage, Over Current | Over Voltage, Over Current |
| 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 | -55 - -40 °C |
| Package / Case | 28-VFQFN Exposed Pad | 28-VFQFN Exposed Pad |
| Supplied Contents | - | Board(s) |
| Supplier Device Package | 28-VQFN (5x5) | 28-VQFN (5x5) |
| Type | - | Power Management |
| Utilized IC / Part | - | BQ24751B, BQ24751A |
| 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 | Tape & Reel (TR) | 250 | $ 11.24 | |
| 500 | $ 10.52 | |||
| Texas Instruments | SMALL T&R | 1 | $ 11.92 | |
| 100 | $ 10.41 | |||
| 250 | $ 8.03 | |||
| 1000 | $ 7.18 | |||
BQ24751 Series
Host controlled 2-4 cell Buck battery charge controller with system power selector with low Iq
| Part | Mounting Type | Package / Case | Battery Chemistry | Charge Current - Max [Max] | Number of Cells [Max] [custom] | Number of Cells [Min] [custom] | Fault Protection | Voltage - Supply (Max) [Max] | Operating Temperature [Max] | Operating Temperature [Min] | Battery Pack Voltage | Supplier Device Package | Current - Charging | Supplied Contents | Function | Type | Utilized IC / Part |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ24751RHDT | Surface Mount | 28-VFQFN Exposed Pad | Multi-Chemistry | 10 A | 4 | 2 | Over Current, Over Voltage | 24 V | 125 ¯C | -55 °C | 18.048 V | 28-VQFN (5x5) | Constant - Programmable | ||||
Texas Instruments BQ24751BEVM | Board(s) | Battery Charger | Power Management | BQ24751B | |||||||||||||
Texas Instruments BQ24751ARHDT | Surface Mount | 28-VFQFN Exposed Pad | Multi-Chemistry | 10 A | 4 | 2 | Over Current, Over Voltage | 24 V | 125 ¯C | -40 °C | 18.04 V | 28-VQFN (5x5) | Constant - Programmable | ||||
Texas Instruments BQ24751AEVM | Board(s) | Battery Charger | Power Management | BQ24751A | |||||||||||||
Texas Instruments BQ24751BRHDR | Surface Mount | 28-VFQFN Exposed Pad | Multi-Chemistry | 10 A | 4 | 2 | Over Current, Over Voltage | 24 V | 125 ¯C | -40 °C | 18.048 V | 28-VQFN (5x5) | Constant - Programmable | ||||
Texas Instruments BQ24751ARHDR | Surface Mount | 28-VFQFN Exposed Pad | Multi-Chemistry | 10 A | 4 | 2 | Over Current, Over Voltage | 24 V | 125 ¯C | -40 °C | 18.04 V | 28-VQFN (5x5) | Constant - Programmable | ||||
Texas Instruments BQ24751BRHDTG4 | Surface Mount | 28-VFQFN Exposed Pad | Multi-Chemistry | 10 A | 4 | 2 | Over Current, Over Voltage | 24 V | 125 ¯C | -40 °C | 18.048 V | 28-VQFN (5x5) | Constant - Programmable | ||||
Texas Instruments BQ24751RHDR | Surface Mount | 28-VFQFN Exposed Pad | Multi-Chemistry | 10 A | 4 | 2 | Over Current, Over Voltage | 24 V | 125 ¯C | -55 °C | 18.048 V | 28-VQFN (5x5) | Constant - Programmable | ||||
Texas Instruments BQ24751BRHDRG4 | Surface Mount | 28-VFQFN Exposed Pad | Multi-Chemistry | 10 A | 4 | 2 | Over Current, Over Voltage | 24 V | 125 ¯C | -40 °C | 18.048 V | 28-VQFN (5x5) | Constant - Programmable |
Description
General part information
BQ24751 Series
The bq24751A is a high-efficiency, synchronous battery charger with integrated compensation and system power selector logic, offering low component count for space-constrained multi-chemistry battery charging applications. Ratiometric charge current and voltage programming allows very high regulation accuracies, and can be either hardwired with resistors or programmed by the system power-management microcontroller using a DAC or GPIOs.
The bq24751A charges two, three, or four series Li+ cells, supporting up to 10 A of charge current, and is available in a 28-pin, 5x5-mm thin QFN package.
The bq24751A controls external switches to prevent battery discharge back to the input, connect the adapter to the system, and to connect the battery to the system using 6-V gate drives for better system efficiency. For maximum system safety, inrush-power limiting provides instantaneous response to high input voltage multiplied by current. This AC Over-Power protection (ACOP) feature limits the input-switch power to the programmed level on the ACOP pin, and latches off if the high-power condition persists to prevent overheating.