PS700 datasheet(1/38 Pages) MICROCHIP

部件名	PS700

功能描述	Battery Monitor

PDF	38 Pages

Scroll/Zoom	100%

制造商	MICROCHIP [Microchip Technology]

网页	http://www.microchip.com

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1 / 38 page

 2004 Microchip Technology Inc.

DS21760F-page 1

PS700

Features

• Measures, maintains and reports all critical

rechargeable battery parameters with high

accuracy

• Supports Lithium (1-cell and 2-cell) battery packs

• Current measurement with 16-bit integrating A/D

accurate to less than ±0.5% error

• Temperature measurement accurate to within

±2°C absolute, using on-chip temperature sensor

or external thermistor

• Accumulation of charge current, discharge

current, temperature and voltage in independent

32-bit registers

• 512-byte nonvolatile EEPROM stores factory

programmed, measured and user-defined

parameters

• In-system offset calibration compensates for

offset error in current measurement

• Industry standard SMBus/I2C™ compatible 2-wire

communications interface

• 8-pin TSSOP package

•-20°C to +85°C operating temperature range

• NTC pin can be configured as a thermistor input

or GPIO

• VC2 pin can be configured as a cell input or a

GPIO

• Flexible power operating modes allow low-power

monitoring of battery conditions during system full

operating and standby conditions:

- Run: Continuous Conversion; 80

µA typ.

- Sample: Sample interval from

0.5-64s @ 45

µA typ.

- Sample-Sleep: Sample interval from

0.5-138s min. @ 20

µA typ.

• Shelf-Sleep mode reduces power consumption

during pack storage conditions to 300 nA typ.,

with automatic wake-up upon pack insertion

Pin Description

Pin Summary

Pin Name

Description

VC2/IO1

Cell voltage input for cell 2 in a

2-series Li Ion pack or general

purpose I/O #1

VC1

Cell voltage input for cell 1

SCL

SMBus clock line

SDA

SMBus data l/O

ROSC

Oscillator bias resistor

NTC/IO0

External thermistor connection or

general purpose I/O #0

GND

Power supply ground

SR

Sense resistor input

ROSC

PS700

1

SCL

2

3

GND

4

8

7

6

5

VC1

VC2/IO1

NTC/IO0

SR

SDA

8-pin 150 mil

TSSOP Package

Battery Monitor

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