홈 센서 온도 센서 온도 스위치
홈
센서
온도 센서
온도 스위치

LM57-Q1

활성

레지스터 프로그래머블 온도 스위치를 사용한 오토모티브 등급 ±0.7°C 온도 센서

지금 주문
데이터 시트

LM57-Q1

활성
데이터 시트 지금 주문

제품 상세 정보

Setpoint type Resistor Programmable Setpoint value (°C) -40 to 160 Operating temperature range (°C) -50 to 160 Accuracy over temp range (max) (°C) 1.3 Sensor gain (mV/°C) -12.924, -10.339, -7.752, -5.166 Output type Open drain, Push Pull Supply voltage (min) (V) 2.4 Supply voltage (max) (V) 5.5 Supply current (typ) (µA) 24 Number of comparator channels 1 Features Built-in hysteresis, Trip-Test Pin Rating Automotive Interface type Analog output, Switch
Setpoint type Resistor Programmable Setpoint value (°C) -40 to 160 Operating temperature range (°C) -50 to 160 Accuracy over temp range (max) (°C) 1.3 Sensor gain (mV/°C) -12.924, -10.339, -7.752, -5.166 Output type Open drain, Push Pull Supply voltage (min) (V) 2.4 Supply voltage (max) (V) 5.5 Supply current (typ) (µA) 24 Number of comparator channels 1 Features Built-in hysteresis, Trip-Test Pin Rating Automotive Interface type Analog output, Switch
TSSOP (PW) 8 19.2 mm² 3 x 6.4
  • Qualified for Automotive Applications, for
    Commercial Device See LM57 Data Sheet
  • AEC-Q100 Qualified with the Following Results:
    • Temperature Grade 0 Extended: −50°C to
      +160°C with Excursions up to 170°C Operating
      Temperature Range
    • Temperature Grade 0: −50°C to +150°C
      Operating Temperature Range
    • Temperature Grade 1: −50°C to +125°C
      Operating Temperature Range
    • HBM ESD Component Classification Level 2
    • CDM ESD Component Classification Level C5
  • Trip Temperature Set by External Resistors with
    Accuracy of ±2.3°C from −40°C to +150°C
  • Resistor Tolerance Contributes Zero Error
  • Push-Pull and Open-Drain Switch Outputs
  • Wide Operating Temperature Range of −50°C to
    160°C
  • Very Linear Analog VTEMP Temp Sensor Output
    with ±1.3°C Accuracy from −50°C to +150°C
  • 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
  • Qualified for Automotive Applications, for
    Commercial Device See LM57 Data Sheet
  • AEC-Q100 Qualified with the Following Results:
    • Temperature Grade 0 Extended: −50°C to
      +160°C with Excursions up to 170°C Operating
      Temperature Range
    • Temperature Grade 0: −50°C to +150°C
      Operating Temperature Range
    • Temperature Grade 1: −50°C to +125°C
      Operating Temperature Range
    • HBM ESD Component Classification Level 2
    • CDM ESD Component Classification Level C5
  • Trip Temperature Set by External Resistors with
    Accuracy of ±2.3°C from −40°C to +150°C
  • Resistor Tolerance Contributes Zero Error
  • Push-Pull and Open-Drain Switch Outputs
  • Wide Operating Temperature Range of −50°C to
    160°C
  • Very Linear Analog VTEMP Temp Sensor Output
    with ±1.3°C Accuracy from −50°C to +150°C
  • 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

The LM57-Q1 device is a precision, dual-output, temperature switch with analog temperature sensor output for wide temperature applications such as automotive grade. The trip temperature (TTRIP) is selected from 256 possible values in the range of –40°C to 160°C. The VTEMP is a class AB analog voltage output that is proportional to temperature with a programmable negative temperature coefficient (NTC). Two external 1% resistors set the TTRIP and VTEMP slope. The digital and analog outputs enable protection and monitoring of system thermal events.

Built-in thermal hysteresis (THYST) prevents the digital outputs from oscillating. The TOVER and TOVER digital outputs will assert when the die temperature exceeds TTRIP and will de-assert when the temperature falls below a temperature equal to TTRIP minus THYST.

TOVER is active-high with a push-pull structure. TOVER is active-low with an open-drain structure. Tying TOVER to TRIP-TEST will latch the output after it trips. The output can be cleared by forcing TRIP-TEST low. Driving the TRIP-TEST high will assert the digital outputs. A processor can check the state of TOVER or TOVER , confirming they changed to an active state. This allows for in situ verification that the comparator and output circuitry are functional after system assembly. When TRIP-TEST is high, the trip-level reference voltage appears at the VTEMP pin. The system could then use this voltage to calculate the threshold of the LM57-Q1.

The LM57-Q1 device is a precision, dual-output, temperature switch with analog temperature sensor output for wide temperature applications such as automotive grade. The trip temperature (TTRIP) is selected from 256 possible values in the range of –40°C to 160°C. The VTEMP is a class AB analog voltage output that is proportional to temperature with a programmable negative temperature coefficient (NTC). Two external 1% resistors set the TTRIP and VTEMP slope. The digital and analog outputs enable protection and monitoring of system thermal events.

Built-in thermal hysteresis (THYST) prevents the digital outputs from oscillating. The TOVER and TOVER digital outputs will assert when the die temperature exceeds TTRIP and will de-assert when the temperature falls below a temperature equal to TTRIP minus THYST.

TOVER is active-high with a push-pull structure. TOVER is active-low with an open-drain structure. Tying TOVER to TRIP-TEST will latch the output after it trips. The output can be cleared by forcing TRIP-TEST low. Driving the TRIP-TEST high will assert the digital outputs. A processor can check the state of TOVER or TOVER , confirming they changed to an active state. This allows for in situ verification that the comparator and output circuitry are functional after system assembly. When TRIP-TEST is high, the trip-level reference voltage appears at the VTEMP pin. The system could then use this voltage to calculate the threshold of the LM57-Q1.
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관심 가지실만한 유사 제품

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다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능
TMP390-Q1 활성 차량용 등급, 초소형, 듀얼 채널, 0.5μA, 저항 프로그래머블 온도 스위치 Wider supply voltage range (1.62 V to 5.5 V), smaller 6-pin SOT-5X3 package (1.2 mm x 1.6 mm) and dual trip point outputs

기술 자료

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1개 모두 보기
유형 직함 날짜
* Data sheet LM57-Q1 Resistor-Programmable Temperature Switch and Analog Temperature Sensor datasheet (Rev. A) PDF | HTML 2015/07/29

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