参数资料
型号: PS700-I/ST
厂商: Microchip Technology
文件页数: 2/38页
文件大小: 0K
描述: IC BATTERY MONITOR LI-ION 8TSSOP
标准包装: 100
功能: 电池监控器
电池化学: 锂离子(Li-Ion)
电源电压: 2.7 V ~ 9 V
工作温度: -20°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 8-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 8-TSSOP
包装: 管件
PS700
1.0
PRODUCT OVERVIEW
included are an on-chip voltage regulation circuit, non-
crystal time base and on-chip temperature sensor. The
The PS700 is a cost-effective, highly accurate IC that
measures, stores and reports all of the critical
parameters required for rechargeable battery monitor-
ing with a minimum of external components. It precisely
measures charge/discharge current as well as voltage
and temperature of a battery pack. In addition, the
PS700 accurately accumulates both charge and
discharge current as independent parameters.
Temperature history can also be maintained for
calculating self-discharge effects.
The PS700 integrates a highly accurate 16-bit integrat-
ing A/D converter that performs current measurement
to within ±0.5% error. On-chip counters precisely track
battery charge/discharge and temperature history. Also
operating voltage range of the PS700 is optimized to
allow a direct interface to 1 or 2-series Li Ion/Li Poly
battery packs. 512 bytes of general purpose nonvolatile
EEPROM storage are provided to store factory
programmed, measured and user defined parameters.
Efficient communication is provided through an
industry standard SMBus/I 2 C? compatible 2-wire
communications interface. This interface allows the
host to determine accurate battery status for effective
system power management and for communication to
the end user. A battery management solution utilizing
the PS700 delivers both space and total system
component cost savings for a wide variety of battery
operated applications.
FIGURE 1-1:
PS700 INTERNAL BLOCK DIAGRAM
Digital Section
Analog Section
512
EEPROM
32-bit
Timers
Voltage
Reference and
Temp Sensor
Voltage
Regulator
512
EEPROM
32-bit
Accumulators/
Accumulators /
Timers
Voltage
Reference and
Temp Sensor
Voltage
Regulator
Comm
Interface
Registers
16-Bit
Sigma-Delta
Integrating
A/D Converter
Analog
Input Mux
SDA
SCL
Comm
Interface
Registers
16-Bit
Sigma-Delta
Integrating
A/D Converter
Analog
Input Mux
VC1
SR
Control and Status
Run
Oscillator
Sleep
Oscillator
Control and Status
Run
Oscillator
Sleep
Oscillator
NTC/IO0
VC2/IO1
R OSC
GND
DS21760F-page 2
? 2004 Microchip Technology Inc.
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