Packaging information
| Package | Pins DSBGA (YZG) | 12 |
| Operating temperature range (°C) -40 to 85 |
| Package qty | Carrier 3,000 | LARGE T&R |
Features for the BQ27505-J3
- Battery Fuel Gauge for 1-Series Li-Ion Applications
- Resides on System Main Board
- Works With Embedded or Removable Battery Packs
- Uses PACK+, PACK–, and T Battery Terminals
- Microcontroller Peripheral Provides:
- Accurate Battery Fuel Gauging
- Internal Temperature Sensor for Battery Temperature Reporting
- Battery Low Interrupt Warning
- Battery Insertion Indicator
- Configurable Level of State of Charge (SOC) Interrupts
- State of Health Indicator
- 96 Bytes of Non-Volatile Scratch-Pad FLASH
- Battery Fuel Gauge Based on Patented Impedance Track™ Technology
- Models the Battery Discharge Curve for Accurate Time-to-Empty Predictions
- Automatically Adjusts for Battery Aging, Battery Self-Discharge,
and Temperature/Rate Inefficiencies - Low-Value Sense Resistor (10 m
or Less)
- 400-kHz I2C™ Interface for Connection to System Microcontroller Port
- In a 12-Pin NanoFree™ (CSP) Packaging
- APPLICATIONS
- Smartphones
- PDAs
- Digital Still and Video Cameras
- Handheld Terminals
- MP3 or Multimedia Players
Impedance Track, NanoFree are trademarks of Texas Instruments.
I2C is a trademark of Philips Electronics.
Description for the BQ27505-J3
The Texas Instruments bq27505 system-side Li-Ion battery fuel gauge is a microcontroller peripheral that provides fuel gauging for single-cell Li-Ion battery packs. The device requires little system micro- controller firmware development. The bq27505 resides on the system’s main board and manages an embedded battery (non-removable) or a removable battery pack.
The bq27505 uses the patented Impedance Track™ algorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-of- charge (%), run-time to empty (min), battery voltage (mV), temperature (°C) and state of health (%).
Battery fuel gauging with the bq27505 requires only PACK+ (P+), PACK– (P–), and Thermistor (T) connections to a removable battery pack or embedded battery circuit. The CSP option is a 12-ball package in the dimensions of 2,43 mm × 1,96 mm with 0,5 mm lead pitch. It is ideal for space constrained applications.