BQ2954SNTR
ActiveSWITCH-MODE LI-ION CHARGE CONTROLLER
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BQ2954SNTR
ActiveSWITCH-MODE LI-ION CHARGE CONTROLLER
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Technical Specifications
Parameters and characteristics commom to parts in this series
| Specification | BQ2954SNTR | BQ2954 Series |
|---|---|---|
| Battery Chemistry | Lithium Ion | Lithium Ion |
| Current - Charging | Constant | Constant |
| Mounting Type | Surface Mount | Through Hole, Surface Mount |
| Operating Temperature [Max] | 85 °C | 85 °C |
| Operating Temperature [Min] | -40 °C | -40 °C |
| Package / Case | 16-SOIC | 16-DIP, 16-SOIC |
| Package / Case | 3.9 mm Width, 0.154 in | 0.154 - 7.62 in |
| Programmable Features | Current | Current |
| Supplier Device Package | 16-SOIC | 16-PDIP, 16-SOIC |
| Voltage - Supply (Max) [Max] | 5.5 V | 5.5 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 | $ 5.71 | |
| 10 | $ 5.13 | |||
| 25 | $ 4.84 | |||
| 100 | $ 4.20 | |||
| 250 | $ 3.98 | |||
| 500 | $ 3.57 | |||
| 1000 | $ 3.01 | |||
| Digi-Reel® | 1 | $ 5.71 | ||
| 10 | $ 5.13 | |||
| 25 | $ 4.84 | |||
| 100 | $ 4.20 | |||
| 250 | $ 3.98 | |||
| 500 | $ 3.57 | |||
| 1000 | $ 3.01 | |||
| Tape & Reel (TR) | 2500 | $ 2.86 | ||
| Texas Instruments | LARGE T&R | 1 | $ 3.92 | |
| 100 | $ 3.20 | |||
| 250 | $ 2.51 | |||
| 1000 | $ 2.13 | |||
BQ2954 Series
Switch-mode Li-ion charge controller
| Part | Operating Temperature [Max] | Operating Temperature [Min] | Package / Case | Package / Case | Mounting Type | Programmable Features | Voltage - Supply (Max) [Max] | Current - Charging | Supplier Device Package | Battery Chemistry |
|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ2954PN | 85 °C | -40 °C | 0.3 in, 7.62 mm | 16-DIP | Through Hole | Current | 5.5 V | Constant | 16-PDIP | Lithium Ion |
Texas Instruments BQ2954SNTR | 85 °C | -40 °C | 0.154 in, 3.9 mm Width | 16-SOIC | Surface Mount | Current | 5.5 V | Constant | 16-SOIC | Lithium Ion |
Texas Instruments BQ2954SN | 85 °C | -40 °C | 0.154 in, 3.9 mm Width | 16-SOIC | Surface Mount | Current | 5.5 V | Constant | 16-SOIC | Lithium Ion |
Texas Instruments BQ2954SNTRG4 | 85 °C | -40 °C | 0.154 in, 3.9 mm Width | 16-SOIC | Surface Mount | Current | 5.5 V | Constant | 16-SOIC | Lithium Ion |
Description
General part information
BQ2954 Series
The bq2954 Li-Ion Charge-Management IC uses a flexible pulse-width modulation regulator to control voltage and current during charging. The regulator frequency is set by an external capacitor for design flexibility. The switch-mode design minimizes power dissipation.
For safety, the bq2954 inhibits fast charging until the battery voltage and temperature are within configured limits. If the battery voltage is less than the low-voltage threshold, the bq2954 provides low-current conditioning of the battery.
For charge qualification, the bq2954 uses an external thermistor to measure battery temperature. Charging begins when power is applied or the battery is inserted
Documents
Technical documentation and resources