Ti Bq78412 Battery Power Charge Management Chip Voltage Monitor Protector Electronic Components Integrated Circuit IC.

• shape: Flat
• Conductive Type: Bipolar Integrated Circuit
• Integration: MSI
• Technics: Semiconductor IC
• Application: Standard Generalized Integrated Circuit
• Type: Digital / Analog IC
• Model NO.: BQ78412
• Rating: Catalog
• RoHS: Yes
• Reach: Yes
• Lead Finish / Ball Material: Nipdau / Snagcu
• Delivery Time: 1-3 Days
• Transport Package: Small Large T&R
• Specification: 9 mm² 3 x 3
• Trademark: TI
• HS Code: 8542399000
• Production Capacity: 60000

Product Description

Packaging information

Package | PinsHTSSOP (DDW) | 44

Operating temperature range (°C)-40 to 85

Package qty | Carrier2,000 | LARGE T&R

Features for the BQ78412

• Designed for Use with 12-V Lead Acid Batteries in Consumer UPS Systems
• Programmable Cell Models for Enhanced Pb-Acid Gas Gauging Performance
• Provides 10-LED Bar Graph of Run-Time Remaining During Discharge and
  % Capacity During Charge
• Can Be Easily Integrated Into Battery Cover
• Works with Pb-Acid Batteries Up to 327 Ah
• Records Cumulative Usage Data Internally for Warranty Return Analysis
• On-Chip Temperature Sensor
• Data Interface for Retrieving Warranty Information
• Fully Programmable Features and Thresholds via UART Serial Interface
• State-of-Health (SoH) Determination and Status Reporting
• Includes Configurable Audible Indicator for Low-Capacity, Low-Voltage,
  and Overvoltage Warnings
• Addressable Commands for Use in Multi-Battery Systems
• Optional Infra-Red Communications Interface
• APPLICATIONS
  • Stand-Alone Uninterruptible Power Supplies
  • 12-V Pb-Acid Battery Monitors
  • Battery Warranty Data Logging Equipment

 

Description for the BQ78412

The bq78412 Pb-Acid Battery State-of-Charge (SoC) Indicator with Run-Time Display is a complete stand-alone battery gas-gauge solution designed for single 12V Pb-Acid batteries. The bq78412 displays remaining Run-Time-To-Empty during discharge and Percent (%) capacity during charge using a 10-LED (light-emitting diode) bar graph.

The bq78412 monitors battery voltage, current, and ambient temperature to calculate state-of-charge and determine remaining runtime-to-empty. Measured values can be recorded and tracked for later retrieval for warranty purposes.

Programmable cell models allow the bq78412 to be customized to a variety of Pb-Acid formulations and capacities.

Current measurements and Coulomb-counting for gas-gauging are also automatically performed by the bq78412. Current measurements use a small value sense resistor placed in the negative power path and calibrated in-circuit. This allows the precise, continuous, real-time calculation of battery capacity and run-time-to-empty values.

Temperature sensing augments gas-gauge and capacity information using a firmware algorithm to compensate for the temperature effects on capacity.

A serial port is available for configuring various programmable parameters including cell models, calibration values, serial number and date of manufacture. The serial port can operate an infra-red (IR) interface to allow connector-less data acquisition. The bq78412 is easily configurable, is fully programmed and requires no algorithm or firmware development