LM96000CIMT National Semiconductor, LM96000CIMT Datasheet
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LM96000CIMT
Manufacturer Part Number
LM96000CIMT
Description
IC,Data Acquisition System,7-CHANNEL,8-BIT,TSSOP,24PIN,PLASTIC
Manufacturer
National Semiconductor
Specifications of LM96000CIMT
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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© 2008 National Semiconductor Corporation
LM96000
Hardware Monitor with Integrated Fan Control
General Description
The LM96000, hardware monitor, has a two wire digital inter-
face compatible with SMBus 2.0. Using an 8-bit ΣΔ ADC, the
LM96000 measures:
tors as well as its own die
ternal scaling resistors).
To set fan speed, the LM96000 has three PWM outputs that
are each controlled by one of three temperature zones. High
and low PWM frequency ranges are supported. The LM96000
includes a digital filter that can be invoked to smooth temper-
ature readings for better control of fan speed. The LM96000
has four tachometer inputs to measure fan speed. Limit and
status registers for all measured values are included.
Features
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Block Diagram
– the temperature of two remote diode connected transis-
– the VCCP, 2.5V, 3.3VSBY, 5.0V, and 12V supplies (in-
2-wire, SMBus 2.0 compliant, serial digital interface
8-bit ΣΔ ADC
Monitors VCCP, 2.5V, 3.3 VSBY, 5.0V, and 12V
motherboard/processor supplies
Monitors 2 remote thermal diodes
Programmable autonomous fan control based on
temperature readings
200846
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Key Specifications
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Applications
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Noise filtering of temperature reading for fan control
1.0°C digital temperature sensor resolution
3 PWM fan speed control outputs
Provides high and low PWM frequency ranges
4 fan tachometer inputs
Monitors 5 VID control lines
24-pin TSSOP package
XOR-tree test mode
Voltage Measurement Accuracy
Resolution
Temperature Sensor Accuracy
Temperature Range
— LM96000 Operational
— Remote Temp Accuracy
Power Supply Voltage
Power Supply Current
Desktop PC
Microprocessor based equipment
(e.g. Base-stations, Routers, ATMs, Point of Sales)
20084601
+3.0V to +3.6V
±2% FS (max)
0°C to +125°C
www.national.com
July 23, 2008
0°C to +85°C
±3°C (max)
8-bits, 1°C
0.53 mA