BQ77PL157APW-4225
ActiveVOLTAGE PROTECTION FOR 3 TO 6 SERIES CELL LITHIUM-ION/POLYMER BATTERIES
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BQ77PL157APW-4225
ActiveVOLTAGE PROTECTION FOR 3 TO 6 SERIES CELL LITHIUM-ION/POLYMER BATTERIES
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Technical Specifications
Parameters and characteristics for this part
| Specification | BQ77PL157APW-4225 |
|---|---|
| Battery Chemistry | Lithium Ion/Polymer |
| Function | Battery Protection |
| Mounting Type | Surface Mount |
| Number of Cells [Max] [custom] | 6 |
| Number of Cells [Min] [custom] | 3 |
| Operating Temperature [Max] | 110 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 16-TSSOP |
| Package / Case [x] | 0.173 in |
| Package / Case [y] | 4.4 mm |
| Supplier Device Package | 16-TSSOP |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tube | 1 | $ 1.48 | |
| 10 | $ 1.33 | |||
| 90 | $ 1.07 | |||
| 270 | $ 1.00 | |||
| 540 | $ 0.88 | |||
| Texas Instruments | TUBE | 1 | $ 1.58 | |
| 100 | $ 1.31 | |||
| 250 | $ 0.94 | |||
| 1000 | $ 0.71 | |||
Description
General part information
BQ77PL157A4225 Series
The bq77PL157 is a stackable overvoltage protection device for 3, 4, 5 or 6 series cell Li-Ion battery packs. This device incorporates a precise and accurate overvoltage detection circuit with preconfigured threshold limits. Additional features include the ability to stack multiple parts to monitor up to 18 series cells.
FUNCTION
Each series cell in a Li-Ion battery pack is compared to an internal reference voltage. If one cell reaches an overvoltage condition, the protection sequence begins. The bq77PL157 starts charging an external capacitor through the CD pin. When the CD pin voltage reaches 1.2 V, the OUT pin changes state and the LVO pin becomes active.
Documents
Technical documentation and resources