Skip to product information
1 of 1
Image shown is a representation only. Exact specifications should be obtained from the product data sheet.
Regular price $8.53
Regular price $8.98 Sale price $8.53
Sale Sold out
Quantity Unit Price Total Price
1 $8.53 $8.53
15+ $8.26 $123.90
25+ $8.08 $202.00
50+ $7.63 $381.50
100+ $6.74 $674.00
N+ $1.35 Price Inquiry
Shipping calculated at checkout.
Quantity
Component Recycling

Request Quote / Inquiry

Product attributes Property Value
Manufacturer Texas Instruments
Product Series Impedance Track™
Packaging Cut Tape (CT) | Tape & Reel (TR)
Function Multi-Function Controller
Battery Chemistry Lithium Ion/Polymer
Number of Cells 2 ~ 4
Fault Protection Over Current, Over Temperature, Over/Under Voltage, Short Circuit
Interface -
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case 38-TFSOP (0.173", 4.40mm Width)
Supplier Device Package 38-TSSOP
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The Texas Instruments BQ20Z45DBT is a sophisticated Multi-Function Controller designed for 2-4 cell Lithium Ion/Polymer battery packs. It integrates a fuel gauge with comprehensive fault protection, including over current, over temperature, over/under voltage, and short circuit. Operating from -40°C to 85°C, this controller in a 38-TFSOP package is ideal for portable electronics requiring accurate battery monitoring and robust safety features.

  • Accurate Fuel Gauging: Provides precise state-of-charge and state-of-health information, extending the usable life of the battery and improving user experience.
  • Comprehensive Protection: Integrates over current, over temperature, over/under voltage, and short circuit protection in a single IC, simplifying design and enhancing safety.
  • Optimized for Li-Ion/Polymer: Specifically tailored for the charging and discharging characteristics of lithium-based chemistries.
  • Wide Operating Range: The -40°C to 85°C range supports use in a variety of climates and applications.

Laptop Battery Packs

The BQ20Z45DBT is perfectly suited for 2-4 cell laptop batteries, providing accurate fuel gauging and comprehensive protection against overcurrent, short circuits, and thermal events.

Portable Medical Equipment

For battery-powered patient monitors or infusion pumps, this controller ensures reliable state-of-charge reporting and safe operation across a wide temperature range.

Handheld Barcode Scanners

In logistics and retail, these devices require accurate battery life prediction. The BQ20Z45DBT's fuel gauge functionality ensures minimal downtime.

Portable Power Tools

For compact cordless drills and screwdrivers using 2-4 cell packs, this IC provides the necessary protection and monitoring to handle high current draws and harsh job site conditions.

Consumer Electronics

Devices like high-end digital cameras and portable speakers benefit from the precise state-of-charge information and robust protection features, extending battery lifespan.

Q: What is the function of the BQ20Z45DBT?
A: It is a Multi-Function Controller for battery management, often used as a fuel gauge.
Q: Which battery chemistries are supported?
A: It supports Lithium Ion and Lithium Polymer batteries.
Q: How many cells can it manage?
A: It is designed for 2 to 4 series-connected cells.
Q: What fault protection features are included?
A: It provides protection against Over Current, Over Temperature, Over/Under Voltage, and Short Circuit conditions.
Q: What is the operating temperature range?
A: The operating temperature range is -40°C to 85°C (TA).
Q: What package is available?
A: It comes in a 38-TFSOP (0.173", 4.40mm Width) package.
Base Product Number : BQ20Z45DBT
2-4 Cells Battery Management BMS Fuel Gauge Lithium Ion Lithium Polymer Multi-Function Controller Over Current Protection Over Temperature Protection Over/Under Voltage Protection Short Circuit Protection Texas Instruments TFSOP
Q: What is the function of the BQ20Z45DBT?
A: It is a Multi-Function Controller for battery management, often used as a fuel gauge.
Q: Which battery chemistries are supported?
A: It supports Lithium Ion and Lithium Polymer batteries.
Q: How many cells can it manage?
A: It is designed for 2 to 4 series-connected cells.
Q: What fault protection features are included?
A: It provides protection against Over Current, Over Temperature, Over/Under Voltage, and Short Circuit conditions.
Q: What is the operating temperature range?
A: The operating temperature range is -40°C to 85°C (TA).
Q: What package is available?
A: It comes in a 38-TFSOP (0.173", 4.40mm Width) package.