BQ24172RGYT
ActiveSTANDALONE 1-3 CELL 4A SYNCHRONOUS BUCK BATTERY CHARGER
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BQ24172RGYT
ActiveSTANDALONE 1-3 CELL 4A SYNCHRONOUS BUCK BATTERY CHARGER
Technical Specifications
Parameters and characteristics commom to parts in this series
| Specification | BQ24172RGYT | BQ24172 Series |
|---|---|---|
| Battery Chemistry | Lithium Ion/Polymer | Lithium Ion/Polymer |
| Battery Pack Voltage | 2.1 V | 2.1 V |
| Charge Current - Max [Max] | 4 A | 4 A |
| Current - Charging | Constant - Programmable | Constant - Programmable |
| Embedded | - | False |
| 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] | 3 | 3 |
| Number of Cells [Min] | 1 | 1 |
| Operating Temperature [Max] | 85 °C | 85 °C |
| Operating Temperature [Min] | -40 °C | -40 °C |
| Package / Case | 24-VFQFN Exposed Pad | 24-VFQFN Exposed Pad |
| Primary Attributes | - | Li-Ion (1 Cell) |
| Programmable Features | Current | Current |
| Secondary Attributes | - | 16 V |
| Secondary Attributes | - | 4.5 V |
| Supplied Contents | - | Board(s) |
| Supplier Device Package | 24-VQFN (5.5x3.5) | 24-VQFN (5.5x3.5) |
| Type | - | Power Management |
| Utilized IC / Part | - | BQ24172 |
| Voltage - Supply (Max) [Max] | 17 V | 17 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 | $ 5.63 | |
| 10 | $ 5.05 | |||
| 25 | $ 4.78 | |||
| 100 | $ 4.14 | |||
| Digi-Reel® | 1 | $ 5.63 | ||
| 10 | $ 5.05 | |||
| 25 | $ 4.78 | |||
| 100 | $ 4.14 | |||
| Tape & Reel (TR) | 250 | $ 3.93 | ||
| 500 | $ 3.53 | |||
| 1250 | $ 2.97 | |||
| 2500 | $ 2.82 | |||
| Texas Instruments | SMALL T&R | 1 | $ 4.25 | |
| 100 | $ 3.72 | |||
| 250 | $ 2.61 | |||
| 1000 | $ 2.10 | |||
BQ24172 Series
Standalone 1-3 cell 4A synchronous Buck battery charger
| Part | Battery Chemistry | Programmable Features | Voltage - Supply (Max) [Max] | Number of Cells [Min] | Number of Cells [Max] | Mounting Type | Current - Charging | Operating Temperature [Max] | Operating Temperature [Min] | Fault Protection | Package / Case | Battery Pack Voltage | Charge Current - Max [Max] | Supplier Device Package | Embedded | Secondary Attributes [Max] | Secondary Attributes [Min] | Type | Supplied Contents | Function | Primary Attributes | Utilized IC / Part |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ24172RGYT | Lithium Ion/Polymer | Current | 17 V | 1 | 3 | Surface Mount | Constant - Programmable | 85 °C | -40 °C | Over Current, Over Temperature, Over Voltage | 24-VFQFN Exposed Pad | 2.1 V | 4 A | 24-VQFN (5.5x3.5) | ||||||||
Texas Instruments BQ24172RGYR | Lithium Ion/Polymer | Current | 17 V | 1 | 3 | Surface Mount | Constant - Programmable | 85 °C | -40 °C | Over Current, Over Temperature, Over Voltage | 24-VFQFN Exposed Pad | 2.1 V | 4 A | 24-VQFN (5.5x3.5) | ||||||||
Texas Instruments BQ24172EVM-706-5V | 16 V | 4.5 V | Power Management | Board(s) | Battery Charger | Li-Ion (1 Cell) | BQ24172 |
Description
General part information
BQ24172 Series
The bq2417x device is a highly integrated stand-alone Li-Ion and Li-Polymer switched-mode battery charger with two integrated N-channel power MOSFETs. The device offers a constant-frequency synchronous PWM controller with high-accuracy regulation of input current, charge current, and voltage. The bq2417x closely monitors the battery pack temperature to allow charge only in a preset temperature window. The bq24170 charges one, two, or three cells (selected by CELL pin), and the bq24172 is adjustable for up to three series Li+ cells.
The device charges the battery in three phases: precondictioning, constant current, and constant voltage.
Charge is terminated when the current reaches 10% of the fast charge rate. A programmable charge timer offers a safety backup. The bq2417x automatically restarts the charge cycle if the battery voltage falls below an internal threshold, and enters a low-quiescent current sleep mode when the input voltage falls below the battery voltage.
Documents
Technical documentation and resources