BQ77PL157A4225

Name: BQ77PL157A4225
Brand: TI
SKU: BQ77PL157A4225
Price: 0.706 USD

現行

適用 3 至 6 芯鋰離子/聚合物電池的電壓保護

立即訂購

產品規格表

document-pdfAcrobat Stackable Secondary Voltage Protector for 3 to 6 Series Li Cells. datasheet (Rev. B) (英文)

BQ77PL157A4225

現行

產品規格表

立即訂購

產品詳細資料

Function

Protection

Number of series cells (min)

3, 4, 5, 6

Number of series cells (max)

4, 5, 6

Features

FET drive, Overvoltage, Stackable

Operating current (typ) (µA)

2

Rating

Catalog

Vin (max) (V)

30

Overvoltage protection

4.225

Operating temperature range (°C)

-40 to 85

Battery overvoltage protection (min) (V)

4.225

Battery overvoltage protection (max) (V)

4.225

Function

Protection

Number of series cells (min)

3, 4, 5, 6

Number of series cells (max)

4, 5, 6

Features

FET drive, Overvoltage, Stackable

Operating current (typ) (µA)

2

Rating

Catalog

Vin (max) (V)

30

Overvoltage protection

4.225

Operating temperature range (°C)

-40 to 85

Battery overvoltage protection (min) (V)

4.225

Battery overvoltage protection (max) (V)

4.225

TSSOP (PW)

16

32 mm² 5 x 6.4

Single IC Li-Ion Protection for 3-Series to 6-Series Cells

Stackable to Protect up to 18-Series Cells

Programmable Detection Time Delay

Low Power Consumption

Typical 2-µA to 2.5-µA Normal Mode

Fixed 4.225 V Overvoltage Threshold

Highly Accurate: ±20-mV MAX, T_A = 0°C to 50°C

Output Activation for Low Side FET
(Contact TI for Alternate Output Options: High/Low-side Fuse or FET)

Protected Output, Power, and Ground Pins for Added Safety and Reliability

Permanent or Recoverable Fault Options

16-pin Small Outline Package

APPLICATIONS

Primary or Secondary Level Voltage Protection for Li-Ion Battery Packs for Use in:
- Power Tools
- UPS Systems
- E-Bikes, Scooters, and Small Mobility Vehicles
- Medical Devices, Test Equipment, and Industrial Products

Single IC Li-Ion Protection for 3-Series to 6-Series Cells

Stackable to Protect up to 18-Series Cells

Programmable Detection Time Delay

Low Power Consumption

Typical 2-µA to 2.5-µA Normal Mode

Fixed 4.225 V Overvoltage Threshold

Highly Accurate: ±20-mV MAX, T_A = 0°C to 50°C

Output Activation for Low Side FET
(Contact TI for Alternate Output Options: High/Low-side Fuse or FET)

Protected Output, Power, and Ground Pins for Added Safety and Reliability

Permanent or Recoverable Fault Options

16-pin Small Outline Package

APPLICATIONS

Primary or Secondary Level Voltage Protection for Li-Ion Battery Packs for Use in:
- Power Tools
- UPS Systems
- E-Bikes, Scooters, and Small Mobility Vehicles
- Medical Devices, Test Equipment, and Industrial Products

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.

If multiple bq77PL157 devices are stacked, the LVIN pin of the next-lower device receives the LVO pin from the above device and similarly starts a shortened delay timer before activating its OUT pin. (No additional isolation or level-shift circuitry is required.) The lowest bq77PL157 in the string is used to activate a power MOSFET located in the low side of the power path.

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.

If multiple bq77PL157 devices are stacked, the LVIN pin of the next-lower device receives the LVO pin from the above device and similarly starts a shortened delay timer before activating its OUT pin. (No additional isolation or level-shift circuitry is required.) The lowest bq77PL157 in the string is used to activate a power MOSFET located in the low side of the power path.

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