BQ27520YZFR-G2 ,System-Side Impedance Track? Fuel Gauge with Integrated LDO 15-DSBGA -40 to 85FEATURES 1.2 APPLICATIONS123• Battery Fuel Gauge for 1-Series Li-Ion• SmartphonesApplications• PDAs ..
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BUT11AF ,NPN Silicon TransistorApplicationsTO-220F11.Base 2.Collector 3.EmitterNPN Silicon TransistorAbsolute Maximum Rating ..
BUT11TU ,NPN Silicon TransistorApplicationsTO-22011.Base 2.Collector 3.EmitterNPN Silicon TransistorAbsolute Maximum Ratings ..
BUT12 ,NPN Silicon Transistor
BUT12 ,NPN Silicon Transistor
BUT12A ,NPN Silicon TransistorApplicationsTO-22011.Base 2.Collector 3.EmitterNPN Silicon TransistorAbsolute Maximum Ratings ..
BUT12A ,NPN Silicon Transistor
BQ27520YZFR-G2
System-Side Impedance Track? Fuel Gauge with Integrated LDO 15-DSBGA -40 to 85
Host System
Single Cell Li-lon
Battery Pack
PACK-
CHG
DSG
Temp
Sense
SOC_INT
Current
Sense
PACK+
Voltage
Sense
BAT_GD
Low
FETs
bq27520
Power
Management
Controller
VCC
DATA
LDO
I2C
Battery
bq27520-G2
www.ti.com SLUSAB7A–MARCH 2011–REVISED AUGUST 2011
System-Side Impedance Track™ Fuel Gauge With Integrated LDO
Checkfor Samples: bq27520-G2 INTRODUCTION
1.1 FEATURES 1.2 APPLICATIONS
123• Battery Fuel Gauge for 1-Series Li-Ion •
Smartphones
Applications •
PDAs•
Resides on System Main Board •
Digital Still and Video Cameras–
Works With Embeddedor Removable •
Handheld TerminalsBattery Packs MP3or Multimedia Players•
Uses PACK+, PACK–, andT Battery Terminals Microcontroller Peripheral Provides:
1.3 DESCRIPTION–
Accurate Battery Fuel Gauging Internal Temperature Sensor for Battery The Texas Instruments bq27520-G2 system-side
Temperature Reporting Li-Ion battery fuel gauge is a microcontroller–
Battery Low Interrupt Warning peripheral that provides fuel gauging for single-cell–
Battery Insertion Indicator Li-Ion battery packs. The device requires little system–
Configurable Levelof Stateof Charge (SOC) microcontroller firmware development. The
Interrupts bq27520-G2 resideson the system’s main board and–
Stateof Health Indicator managesan embedded battery (non-removable)ora
Current Data Logging Buffer removable battery pack.
32 Bytesof Non-Volatile Scratch-Pad FLASH The bq27520-G2 uses the patented Impedance•
Battery Fuel Gauge Based on Patented Track™ algorithm for fuel gauging, and provides
Impedance Track™ Technology information such as remaining battery capacity–
Models the Battery Discharge Curve for (mAh), state-of-charge (%), run-timeto empty (min),
Accurate Time-to-Empty Predictions battery voltage (mV), temperature (°C) and stateof–
Automatically Adjusts for Battery Aging, health (%).
Battery Self-Discharge, and
Temperature/Rate Inefficiencies Battery fuel gauging with the bq27520-G2 requires
Low-Value Sense Resistor (10 mΩor Less) only PACK+ (P+), PACK– (P–), and Thermistor (T)
400-kHzI2 C™ Interface for Connectionto connections to a removable battery pack or
System Microcontroller Port embedded battery circuit. The CSP optionisa 15-ball
(CSP) Packaging packagein the nominal dimensionsof 2610× 1956 with 0,5 mm lead pitch.Itis ideal for space
constrained applications.
TYPICAL
