BQ78412
Indicador de estado de carga de la batería Pb-ácido con pantalla de tiempo de funcionamiento
Se encuentra disponible una versión más nueva de este producto
Misma funcionalidad con diferente configuración de pines que el dispositivo comparado
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
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
Documentación técnica
| Tipo | Título | Fecha | ||
|---|---|---|---|---|
| * | Data sheet | Pb-Acid Battery State-of-Charge Indicator datasheet | 04 ago 2010 | |
| User guide | BQ78412EVM Board Quick-Start Guide | 04 may 2011 | ||
| User guide | BQ78412 Application Programming Interface | 20 ene 2011 |
Diseño y desarrollo
Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.
| Encapsulado | Pines | Símbolos CAD, huellas y modelos 3D |
|---|---|---|
| HTSSOP (DDW) | 44 | Ultra Librarian |
Pedidos y calidad
- RoHS
- REACH
- Marcado del dispositivo
- Acabado de plomo/material de la bola
- Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
- Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
- Contenido del material
- Resumen de calificaciones
- Monitoreo continuo de confiabilidad
- Lugar de fabricación
- Lugar de ensamblaje
Los productos recomendados pueden tener parámetros, módulos de evaluación o diseños de referencia relacionados con este producto de TI.
Soporte y capacitación
Foros de TI E2E™ con asistencia técnica de los ingenieros de TI
El contenido lo proporcionan “tal como está” TI y los colaboradores de la comunidad y no constituye especificaciones de TI. Consulte los términos de uso.
Si tiene preguntas sobre la calidad, el paquete o el pedido de productos de TI, consulte el soporte de TI.