SLOS877C October   2014  – April 2021 TMP451-Q1

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Timing Characteristics for Figure 1-1
    7. 6.7 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Temperature Measurement Data
        1. 7.3.1.1 Standard Binary to Decimal Temperature Data Calculation Example
        2. 7.3.1.2 Standard Decimal to Binary Temperature Data Calculation Example
      2. 7.3.2 Series Resistance Cancellation
      3. 7.3.3 Differential Input Capacitance
      4. 7.3.4 Filtering
      5. 7.3.5 Sensor Fault
      6. 7.3.6 ALERT and THERM Functions
    4. 7.4 Device Functional Modes
      1. 7.4.1 Shutdown Mode (SD)
    5. 7.5 Programming
      1. 7.5.1 Serial Interface
        1. 7.5.1.1 Bus Overview
        2. 7.5.1.2 Bus Definitions
        3. 7.5.1.3 Serial Bus Address
        4. 7.5.1.4 Read and Write Operations
        5. 7.5.1.5 Timeout Function
        6. 7.5.1.6 High-Speed Mode
    6. 7.6 Register Map
      1. 7.6.1 Register Information
        1. 7.6.1.1  Pointer Register
        2. 7.6.1.2  Temperature Registers
        3. 7.6.1.3  Status Register
        4. 7.6.1.4  Configuration Register
        5. 7.6.1.5  Conversion Rate Register
        6. 7.6.1.6  One-Shot Start Register
        7. 7.6.1.7  η-Factor Correction Register
        8. 7.6.1.8  Offset Register
        9. 7.6.1.9  General Call Reset
        10. 7.6.1.10 Identification Register
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Receiving Notification of Documentation Updates
    2. 11.2 Support Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

6.5 Electrical Characteristics

At TA = –40°C to 125°C and V+ = 3.3 V, unless otherwise noted.
PARAMETERCONDITIONSMINTYPMAXUNIT
TEMPERATURE ERROR
TELOCALLocal temperature sensorTA = 0°C to 70°C±0.25±1°C
TA = –40°C to 125°C±1±2°C
TEREMOTERemote temperature sensor(1)TA = 0°C to 70°C, TD = –55°C to 150°C±0.25±1°C
TA = –40°C to 100°C, TD = –55°C to 150°C±1±2°C
TA = –40°C to 125°C, TD = –55°C to 150°C±2±4°C
Remote temperature sensor versus supply (local or remote)V+ = 1.7 V to 3.6 V±0.1±0.25°C/V
TEMPERATURE MEASUREMENT
Conversion timeOne-Shot mode, local and remote total3134ms
Local temperature sensor resolution12Bits
Remote temperature sensor resolution12Bits
Remote sensor source current, highSeries resistance 1 kΩ max120μA
Remote sensor source current, medium45μA
Remote sensor source current, low7.5μA
ηRemote transistor ideality factorTMP451-Q1 optimized ideality factor1.008
SMBus INTERFACE
VIHHigh-level input voltage1.4V
VILLow-level input voltage0.45V
Hysteresis200mV
SMBus output low sink current6mA
VOLLow-level output voltageIO = 6 mA0.150.4V
Logic input current0 V ≤ VI ≤ 3.6 V–11μA
SMBus input capacitance3pF
SMBus clock frequency0.012.5MHz
SMBus timeout202530ms
SCL falling edge to SDA valid time1μs
DIGITAL OUTPUTS (THERM, ALERT/ THERM2)
VOLLow-level output voltageIO = 6 mA0.150.4V
IOHHigh-level output leakage currentVO = V+1μA
POWER SUPPLY
V(V+)Specified voltage range1.73.6V
IQQuiescent current0.0625 conversions per second2740μA
16 conversions per second165250μA
32 conversions per second300450μA
Serial bus inactive, shutdown mode38μA
Serial bus active, ƒS = 400 kHz, shutdown mode90μA
Serial bus active, ƒS = 2.5 MHz, shutdown mode350μA
PORPower-on reset threshold1.21.55V
(1) Tested with less than 5-Ω effective series resistance and 100-pF differential input capacitance.