PS334 Datasheet | Power Smart

.. Preliminary Li Ion Smart Battery Manager Features Pin Description - Performs all major Li Ion battery 28 management functions including INPUT VDSS 1 EE-SCK SMB-CLK 27 2 - Accurate capacity monitoring 26 EE-CS SMB-DTA 3 - Direct control of external charge VREFT OUTPUT1 4 PS334 25 circuitry (e.g. PWM) 24 VNTC OUTPUT2 5 - Direct control of secondary safety 23 VCELL1 OUTPUT3 6 22 VASS1 OUTPUT4 7 functions 21 VCELL2 OUTPUT5 8 - Six independently programmable output 20 VCELL3 VDDD 9 pins can be assigned as SOC LED outputs, 19 VCELL4 OUTPUT6 10 18 VADD EE-SI/SO direct charge control, or additional levels 11 17 VSHP OSCIN 12 of safety control 16 VSHM OSCOUT 13 - Fully pliant with industry standard VASS2 VREG 15 14 Smart Battery Data Specification V1.1a 0.209 mil SSOP - SMBus V1.1 with PEC / CRC-8 28-PIN Package munication with system host - High accuracy measurement of charge / Pin Summary discharge current, voltage, and Pin Name Function temperature with on-chip 14-bit integrating Input LED Switch Input A/D EE-SCK, EE-CS, SPI Serial EEPROM - Precise capacity reporting for all lithium EE-SI/SO Interface based chemistries using Power Smart VREFT Reference Voltage patented algorithms and 3D battery cell Output . models VNTC Temperature A/D Input VCELL1-4 Single Cell Voltage - 3D models and “learned” parameters Inputs stored in external EEPROM; fully field re VASS1, VADD, Analog Supply Voltage programmable via SMBus interface VASS2 Inputs - Supports cell configurations of 1-4 cells in VSHP, VSHM Current Sense Resistor series Inputs - Extremely low power operation: VREG Voltage Reg. Control - Sleep Mode: < 10 u A typical Output - Run Mode: < 500 u A typical OSCOUT, OSCIN Crystal Oscillator Inputs - Sample Mode: < 250 u A typical (32 KHz) - PS345X modules available for quick OUTPUT1-6 Programmable Output Pins 1-6 prototyping or production VDDD, VDSS Digital Power Supply - plete hardware and software Inputs development tools...