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bq20z80

Features: * Patented Impedance Track(TM) Technology Accurately Measures Available Charge in Li-Ion and Li-Polymer Batteries* Better than 1% Error Over Lifetime of the Battery* Instant Accuracy No Learning Cycle Required* Supports the Smart Battery Specification SBS V1.1* Works With the TI bq29312...

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SeekIC No. : 004301175 Detail

bq20z80: Features: * Patented Impedance Track(TM) Technology Accurately Measures Available Charge in Li-Ion and Li-Polymer Batteries* Better than 1% Error Over Lifetime of the Battery* Instant Accuracy No L...

bq20z80 Data Sheet

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Part Number:
bq20z80
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

* Patented Impedance Track(TM) Technology Accurately Measures Available Charge in Li-Ion and Li-Polymer Batteries
* Better than 1% Error Over Lifetime of the Battery
* Instant Accuracy No Learning Cycle Required
* Supports the Smart Battery Specification SBS V1.1
* Works With the TI bq29312A Analog Front-End (AFE) Protection IC to Provide Complete Pack Electronics Solution
* Full Array of Programmable Voltage, Current, and Temperature Protection Features
* Integrated Time Base Removes Need for External Crystal with Optional Crystal Input
* Electronics for 7.2-V, 10.8-V or 14.4-V Battery Packs With Few External Components
* Based on a Powerful Low-Power RISC CPU Core With High-Performance Peripherals
* Integrated Field Programmable FLASH Memory Eliminates the Need for External Configuration Memory
* Measures Charge Flow Using a High-Resolution, 16-Bit Integrating Delta-Sigma Converter
   Better Than 0.65-nVh of Resolution
   Self-Calibrating
   Offset Error Less Than 1-V
* Uses 16-Bit Delta-Sigma Converter for Accurate Voltage and Temperature Measurements
* Extensive Data Reporting Options For Improved System Interaction
* Optional Pulse Charging Feature for Improved Charge Times
* Drives 3-, 4- or 5-Segment LED Display for Remaining Capacity Indication
* 38-Pin TSSOP (DBT)


Application

* Notebook PCs
* Medical and Test Equipment
* Portable Instrumentation


Pinout

Connection Diagram


Specifications

  RANGE
VDDA and VDDD relative to VSS
 Supply voltage range 0.3V to 4.1V
V(IOD) relative to VSS
 Open-drain I/O pins 0.3V to 6V
VI relative to VSS
 Input voltage range to all other pins 0.3V to VDDA+0.3 V
TA Operating free-air temperature range 40  to 85
Tstg Storage temperature range 65  to 150



Description

The bq20z80 SBS-compliant gas gauge IC,incorporating patented Impedance Track technology, is designed for battery-pack or in-system installation. The bq20z80 measures and maintains an accurate record of available charge in Li-ion or Li-polymer batteries using its integrated high-performance analog peripherals. The bq20z80 monitors capacity change, battery impedance, open-circuit voltage, and other critical parameters of the battery pack, and reports the information to the system host controller over a serial-communication bus. It is designed to work with the bq29312A analog front-end (AFE) protection IC to maximize functionality and safety, and minimize component count and cost in smart battery circuits.


The Impedance Track technology of bq20z80 continuously analyzes the battery impedance, resulting in superior gas-gauging accuracy. This enables remaining capacity to be calculated with discharge rate, temperature, and cell aging all accounted for during each stage of every cycle.




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