PS331 Datasheet | Power Smart

.. Preliminary Multichemistry Smart Battery Monitor Features Pin Description - Performs all major Li Ion, Ni MH battery monitoring and reporting functions 28 VDSS 1 SWITCH 27 2 EE-SCK SMB-CLK providing up to 1% accuracy in capacity 26 3 EE-f CS SMB-DTA measurement VREFT LED 1 4 PS331 25 - Additional output pin for over voltage or 24 5 VNTC LED 2 over temperature safety fuse operation 23 6 VCELL1 LED 3 (SAFEOUT) 22 VASS1 LED 4 7 21 VCELL2 SAFEOUT 8 - Fully pliant with industry standard 20 9 VCELL3 VDDD Smart Battery Data Specification V1.1a 19 VCELL4 EE-SI 10 - SMBus V1.1 with PEC/CRC-8 18 11 VADD EE-SI/SO munication with system host 17 12 VSHP OSCIN 16 VSHM OSCOUT 13 - High accuracy measurement of charge / 15 VASS2 VREG 14 discharge current, voltage, and 0.209 mil SSOP temperature with on-chip 14-bit integrating 28-PIN Package A/D - Precise capacity reporting for all lithium Pin Summary and nickel chemistries using Power Smart Pin Name Function patented algorithms and 3D battery cell INPUT LED Switch Input models EE-SCK, EE-CS, SPI Serial EEPROM - 3D models and “learned” parameters EE-SI/SO Interface stored in external EEPROM; fully field re VREFT Reference Voltage Output programmable via SMBus interface VNTC Temperature A/D Input . - Supports cell configurations of 1-4 cells in VCELL1-4 Single Cell Voltage Inputs series VASS1, VADD, Analog Supply Voltage - Extremely low power operation: VASS2 Inputs - Sleep Mode: < 10 u A typical VSHP, VSHM Current Sense Resistor Inputs - Run Mode: < 500 u A typical VREG Voltage Reg. Control Output - Sample Mode: < 250 u A typical OSCOUT, OSCIN Xtal Oscillator Inputs (32 - PS31XX Modules available for quick KHz) prototyping or production VDDD, VDSS Digital Power Supply Inputs - plete hardware and software SAFEOUT Safety Control Output development tools available LED1-4 SMB-CLK, SMB-DTA LED Output Driver pins SMBus Interface Pins Data Shee Product Overview The PS331 is an advanced Smart...