LM96080CIMT/NOPB National Semiconductor, LM96080CIMT/NOPB Datasheet - Page 16
LM96080CIMT/NOPB
Manufacturer Part Number
LM96080CIMT/NOPB
Description
IC HARDWARE MONITOR 24-TSSOP
Manufacturer
National Semiconductor
Series
PowerWise®r
Datasheet
1.LM96080CIMTNOPB.pdf
(30 pages)
Specifications of LM96080CIMT/NOPB
Function
Hardware Monitor
Topology
ADC (Sigma Delta), Comparator, Fan Speed Counter, Register Bank
Sensor Type
External & Internal
Sensing Temperature
-40°C ~ 125°C, External Sensor
Output Type
I²C™
Output Alarm
No
Output Fan
Yes
Voltage - Supply
3 V ~ 5.5 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
24-TSSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
LM96080CIM
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LM96080CIMT/NOPB
Manufacturer:
National Semiconductor
Quantity:
135
Company:
Part Number:
LM96080CIMT/NOPB
Manufacturer:
NS
Quantity:
175
www.national.com
Divide by 1
Divide by 2
Divide by 4
Divide by 8
Mode Select
The table below shows example calculation for Count with
different divisor and frequency. Counts are based on 2 pulses
per revolution tachometer outputs.
RPM
4400
3080
2640
Nominal RPM
8800
4400
2200
1100
(d) Fan with Strong Tach Pull-Up or Totem Pole Output and Diode Clamp
Time per Revolution
13.64 ms
19.48 ms
22.73 ms
Time per Revolution
(c) Fan with Tach Pull-Up to +12V and Diode Clamp
13.64 ms
27.27 ms
54.54 ms
6.82 ms
FIGURE 5. Alternatives for Fan Inputs
Given Speed in Decimal
16
Counts for “Divide by 2”
Counts for the
(Default) in Decimal
(maximum counts)
153
153
153
153
153 counts
219 counts
255 counts
30070114
30070115
70% RPM
6160
3080
1540
770
Time per Revolution
Typical RPM
for 70% RPM
Comments
70% RPM
60% RPM
19.48 ms
38.96 ms
77.92 ms
9.74 ms