bq27510DRZR-G2 System-Side Impedance Track™ Fuel Gauge With Direct
Battery Connection
FEATURES
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
Can be Powered Directly From Battery Pack (no LDO required)
Microcontroller Peripheral Provides:
Accurate Battery Fuel Gauging
Battery Low Interrupt Warning
Battery Insertion Indicator
– 64 Bytes of Non-Volatile Scratch Pad FLASH
Battery Fuel Gauging Based on Patented
Impedance Track™ Technology
Models 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 mΩ or less)
• I 2C™ for Connection to System
Microcontroller Port
Small 12-pin 2,5 mm × 4 mm SON Package
APPLICATIONS
Smartphones
PDAs
Digital Still and Video Cameras
Handheld Terminals
MP3 or Multimedia Players
DESCRIPTION
The Texas Instruments bq27510-G2 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.microcontroller firmware development. The
bq27510-G2 resides on the system’s main board and manages an
embedded battery (non-removable) or a removable battery pack.
The bq27510-G2 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), and temperature (°C)
Battery fuel gauging with the bq27510-G2 requires only PACK+
(P+), PACK– (P–), and Thermistor (T)connections to a removable
battery pack or embedded battery.
DEVICE INFORMATION
AVAILABLE OPTIONS
| PART NUMBER(1) | PACKAGE(2) | TA | COMMUNICATION FORMAT | TAPE and REEL QUANTITY |
| bq27510DRZR-G2 | 12-pin, 2,5-mm × 4-mm SON | –40°C to 85°C | I 2C | 3000 |
| bq27510DRZT-G2 | 250 |
PIN FUNCTIONS
| PIN | TYPE(1) | DESCRIPTION |
| NAME | NO. |
| BI/TOUT | 1 | I/O | Battery-insertion detection input. Power pin for pack thermistor
network. Thermistor-multiplexer control pin. Open-drain I/O. Use
with pull-up resistor >1MΩ (1.8 MΩ typical). |
| REG25 | 2 | P | 2.5 V output voltage of the internal integrated LDO. |
| REGIN | 3 | P | The input voltage for the internal integrated LDO. |
| BAT | 4 | I | Cell voltage measurement input. ADC input. |
| Vcc | 5 | P | Processor power input. Decouple with 0.1mF ceramic capacitor
minimum |
| Vss | 6 | P | Device ground |
| SRP | 7 | IA | Analog input pin connected to the internal coulomb counter where
SRP is nearest the PACK-connection. Connect to 5-mΩ to 20-mΩ sense
resistor |
| SRN | 8 | IA | Analog input pin connected to the internal coulomb counter where
SRN is nearest the VSS-connection. Connect to a 5-mΩ to 20-mΩ sense
resistor. |
| TS | 9 | IA | Pack thermistor voltage sense (use 103AT-type thermistor). ADC
input |
| SDA | 10 | I/O | Slave I 2C serial communications data line for communication with
system (Master). Open-drain I/O. Use with 10-kΩ pull-up resistor
(typical). |
| SCL | 11 | I | Slave I 2C serial communications clock input line for communication
with system (Master). Use with 10-kΩ pull-up resistor (typical). |
| BAT_LOW BAT_GD | 12 | O | Battery-good or Battery-low output indicator. Desired function
polarity selected through the Operation Configuration
register. Open-drain output |
ELECTRICAL SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
Hot selling offer!!!
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