BU9817FV
Multimedia ICs
4-channel temperature sensor IC for
PCs with I
2
C 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 I
2
C 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 I
2
C 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
Power dissipation
Operating temperature
Storage temperature
Voltage applied to pins
VDD
Pd
Topr
Tstg
VIN
7.0
350
– 15 ~ + 75
– 55 ~ +125
GND – 0.5 ~ VDD + 0.5
V
mW
˚C
˚C
V
* Reduced by 3.5mW for each increase in Ta of 1˚C over 25˚C.
!Recommended operating conditions (Ta = 25°C)
Parameter Symbol UnitMax.Typ.Min.
Operating power supply voltage VDD 3.0 5.5— V
Note) I
2
C BUS is a registered trademark philips.