LM57 Overview
The LM57 device is a precision, dual-output, temperature switch with analog temperature sensor output for wide temperature industrial applications. The trip temperature (TTRIP) is selected from 256 possible values in the range of 40°C to 150°C. The VTEMP is a class AB analog voltage output that is proportional to temperature with a programmable negative temperature coefficient (NTC).
LM57 Key Features
- 1 See LM57-Q1 Data Sheet for AEC-Q100 Grade 1/Grade 0/Grade 0 Extended (Qualified and Manufactured on an Automotive Grad
- Trip Temperature Set by External Resistors with Accuracy of ±1.7°C or ±2.3°C from -40°C to +150°C
- Resistor Tolerance Contributes Zero Error
- Push-Pull and Open-Drain Switch Outputs
- Very Linear Analog VTEMP Temp Sensor Output
- Short-Circuit Protected Analog and Digital Outputs
- Latching Function for Digital Outputs
- TRIP-TEST Pin Allows In-System Testing
- Low Power Minimizes Self-Heating to Under 0.02°C
