BU9817FV Datasheet, PDF (1/15 Pages) Rohm – 4-channel temperature sensor IC for PCs with I2C BUS interface

Multimedia ICs
BU9817FV
4-channel temperature sensor IC for
PCs with I²C BUS interface
BU9817FV
The BU9817FV is a 4-channel, 8-bit, A / D converter / overvoltage detector that is perfect for temperature sensors with
built-in I²C BUS interfaces. The host can access the BU9817FV anytime for the voltage data.
!Applications
Notebook computers, desktop computers, household
electric appliances
!Features
1) By attaching a thermistor, a maximum four-channel
temperature sensor is possible.
2) Can set comparison voltages independently.
3) Built-in I²C BUS interface.
4) Detection level and operating mode settings are pro-
grammable.
5) Extremely low operating current perfect for portable
equipment.
6) Operating voltage of VDD = 3V to 5.5V.
!Absolute maximum ratings (Ta = 25°C)
Parameter
Symbol
Limits
Unit
Power supply voltage
VDD
7.0
V
Power dissipation
Pd
350
mW
Operating temperature
Topr
– 15 ~ + 75
˚C
Storage temperature
Tstg
– 55 ~ +125
˚C
Voltage applied to pins
VIN
GND – 0.5 ~ VDD + 0.5
V
* Reduced by 3.5mW for each increase in Ta of 1˚C over 25˚C.
!Recommended operating conditions (Ta = 25°C)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Operating power supply voltage
VDD
3.0
—
5.5
V
Note) I²C BUS is a registered trademark philips.