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LM66  Product Folder

Dual Output Internally Preset Thermostat
Generic P/N 66
General
Description		 Features Datasheet Package
& Models		 Samples
& Pricing

Parametric Table Parametric Table
Temperature Min (deg C) -40 
Temperature Max (deg C) 125 
Accuracy (+/-) (deg C) 3 
Supply Min (Volt) 2.70 
Supply Max (Volt) 10 
Quiescent Current (mA) .23 
Sensor Gain 6.2 mV/Deg C 
VtempOutput Impedance (Ohm) 1500 
Comparators () 2 
RemoteDiode ThermalSensors () - 
Reference Output (Volt) 1.25 
Preset Setpoints Yes 

Datasheet

TitleSize in KbytesDate
View Online
Download
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LM66 Dual Output Internally Preset Thermostat 75 Kbytes 2-Mar-01 View Online Download Receive via Email

If you have trouble printing or viewing PDF file(s), see Printing Problems.

Package Availability, Models, Samples & Pricing

Part NumberPackageStatusModelsSamples &
Electronic
Orders		Budgetary PricingStd
Pack
Size		Package
Marking
TypePinsMSL/Lead-Free AvailabilityLead
Time		QtySPICEIBISQty$US each
LM66CIM-RLSKBSOIC NARROW8StatusPreliminaryN/AN/ASamples1K+$0.80rail
of
95		NSXYTT
T66CI
RLSKB
10-12 weeks5000
LM66C MDCUnpackaged DieFull productionN/AN/A   tray
of
N/A		-
N/A0
LM66C MWCWaferFull productionN/AN/A   wafer jar
of
N/A		-
N/A0

General Description

The LM66 is a precision low power thermostat. Two stable temperature trip points (VT1 and VT2) are generated by dividing down the LM66 1.250V bandgap voltage reference using a resistors divider network. The LM66 has two digital outputs. OUT1 goes LOW when the temperature exceeds T1 and goes HIGH when the the temperature goes below (T1-THYST). Similarly, OUT2 goes LOW when the temperature exceeds T2 and goes HIGH when the temperature goes below (T2-THYST). THYST is an internally set 5°C typical hysteresis.

The LM66 is currently available in an 8-lead small outline package.

Features

  • Digital outputs support TTL logic levels
  • Internal temperature sensor
  • 2 internal comparators with hysteresis
  • Internal voltage reference
  • Currently available in 8-pin SO plastic package

Key Specification

Power Supply Voltage2.7V to 10V
Power Supply Current250 µA (max)
VREF1.250V ±1.4% (max)
Hysteresis Temperature5°C
Internal Temperature Sensor Output Voltage(+6.20 mV/°C x T) +400mV
Temperature Trip Point Accuracy±3°C (max)
T1 set point+73°C
T2 set point+82°C

Applications

  • Microprocessor Thermal Management
  • Appliances
  • Portable Battery Powered 3.0V or 5V Systems
  • Fan Control
  • Industrial Process Control
  • HVAC Systems
  • Remote Temperature Sensing
  • Electronic System Protection
[Information as of 15-Jan-2004]

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