BQ24171RGYR
ActiveSTANDALONE 1-3 CELL 4A SYNCHRONOUS BUCK BATTERY CHARGER WITH JEITA COMPLIANCE AND POWER PATH
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BQ24171RGYR
ActiveSTANDALONE 1-3 CELL 4A SYNCHRONOUS BUCK BATTERY CHARGER WITH JEITA COMPLIANCE AND POWER PATH
Technical Specifications
Parameters and characteristics for this part
| Specification | BQ24171RGYR |
|---|---|
| Battery Chemistry | Lithium Ion/Polymer |
| Battery Pack Voltage | 2.1 V |
| Charge Current - Max [Max] | 4 A |
| Current - Charging | Constant - Programmable |
| Fault Protection | Over Voltage, Over Current, Over Temperature |
| Mounting Type | Surface Mount |
| Number of Cells [Max] | 3 cells |
| Number of Cells [Min] | 1 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 24-VFQFN Exposed Pad |
| Programmable Features | Current |
| Supplier Device Package | 24-VQFN |
| Supplier Device Package [x] | 5.5 |
| Supplier Device Package [y] | 3.5 |
| Voltage - Supply (Max) [Max] | 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 | $ 1.99 | |
| 10 | $ 1.79 | |||
| 25 | $ 1.69 | |||
| 100 | $ 1.44 | |||
| 250 | $ 1.35 | |||
| 500 | $ 1.19 | |||
| Digi-Reel® | 1 | $ 1.99 | ||
| 10 | $ 1.79 | |||
| 25 | $ 1.69 | |||
| 100 | $ 1.44 | |||
| 250 | $ 1.35 | |||
| 500 | $ 1.19 | |||
| Tape & Reel (TR) | 3000 | $ 1.19 | ||
| Texas Instruments | LARGE T&R | 1 | $ 1.92 | |
| 100 | $ 1.69 | |||
| 250 | $ 1.18 | |||
| 1000 | $ 0.95 | |||
Description
General part information
BQ24171 Series
The bq24171 device is 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 bq24171 closely monitors the battery pack temperature and allows charge only in a JEITA profile-compatible window with a lower charge rate at a low temperature and a lower charge voltage at a high temperature. The bq24171 device charges the battery in three phases: preconditioning, constant current, and constant voltage. The bq24171 charges up to 3-series cells with an adjustable cell voltage.
The bq24171 charges the battery in three phases: preconditioning, constant current, and constant voltage. The device is adjustable for up to three series Li+ cells.
Charge is terminated when the current reaches 10% of the fast charge rate. A programmable charge timer offers a safety backup. The bq24171 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
