The bq28400 device is a fully integrated gas gauge and analog monitoringmanagement solution that provides protection and control for 2-series cell Li-Ion battery packs in a single TSSOP package.
Implementing the optimum balance of quick response analog hardware-based monitoring and control along with an integrated fast CPU provides the ideal pack-based or in-system Li-Ion battery solution. The bq28400 also provides flexible user programmable settings stored in flash memory for control of critical system parameters such as overcurrent, short circuit, under/overvoltage, and over/undertemperature conditions.
The bq28400 communicates with the system host via a two-wire SMBus 1.1 compatible interface, providing high-accuracy reporting and control of battery pack operation. The FET drive and TSSOP package enable a lower cost and small footprint solution along with a simple layout and routing on narrow pack PCBs.
Feature
Fully Integrated Gas Gauge and Analog Monitoring with Protection in a Single Package
2-Series Cell Li-Ion or Li-Polymer Battery Packs
Flexible Memory Architecture with Integrated Flash Memory
Zero-Volt and Pre-Charge Mode
Full Array of Programmable Protection:
OV (Overvoltage)
UV (Undervoltage)
SC (Short Circuit)
OT (Overtemperature)
CIM (Cell Imbalance)
Accurate CEDV Gauging Algorithm with Self Discharge Compensation
High Accuracy Analog Interface with Two Independent ADCs:
High Resolution 16-Bit Integrator for Coulomb Counting
16-Bit Delta-Sigma ADC with a 16-Channel Multiplexer for Voltage, Current, and Temperature
High Side Protection FET Drive
Fully Integrated Internal Clock Synthesizer with No ExternalComponents Required
Two-Wire SMBus v1.1 Compliant Communications
Reduced Power Modes (Typical Battery Pack Operating Range Conditions)
20-Pin TSSOP Package (RoHS-Compliant)
JEITA/Enhanced Charging
Supports SHA-1 Authentication Responder
APPLICATIONS
Tablet PCs
Slate PCs
Netbooks/Notebooks
Smartbooks
Catalogue
FPGA / CPLD
Memory
MOS 
MCU 
DSP
OCEP
Secondary 
Other 
