ZHCSKD0I September   2009  – October 2019 TMP431 , TMP432

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
    1.     Device Images
      1.      典型应用电路原理图
  4. 4 修订历史记录
  5. 5 Pin Configuration and Functions
    1.     Pin 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 Requirements
    7. 6.7 Typical Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Temperature Measurement Data
      2. 8.3.2 Beta Compensation
      3. 8.3.3 Series Resistance Cancellation
      4. 8.3.4 Differential Input Capacitance
      5. 8.3.5 Filtering
      6. 8.3.6 Sensor Fault
      7. 8.3.7 THERM and ALERT/THERM2
    4. 8.4 Device Functional Modes
      1. 8.4.1 Shutdown Mode (SD)
      2. 8.4.2 One-Shot Mode
    5. 8.5 Programming
      1. 8.5.1  Serial Interface
      2. 8.5.2  Bus Overview
      3. 8.5.3  Timing Diagrams
      4. 8.5.4  Serial Bus Address
      5. 8.5.5  Read and Write Operations
      6. 8.5.6  Undervoltage Lockout
      7. 8.5.7  Timeout Function
      8. 8.5.8  High-Speed Mode
      9. 8.5.9  General Call Reset
      10. 8.5.10 SMBus Alert Function
    6. 8.6 Register Maps
      1. 8.6.1  Pointer Register
      2. 8.6.2  Temperature Registers
      3. 8.6.3  Limit Registers
      4. 8.6.4  Status Registers
        1. 8.6.4.1 TMP431 Status Register
        2. 8.6.4.2 TMP432 Status Register
      5. 8.6.5  Configuration Register 1
      6. 8.6.6  Configuration Register 2
      7. 8.6.7  Conversion Rate Register
      8. 8.6.8  Beta Compensation Configuration Register
      9. 8.6.9  η-Factor Correction Register
      10. 8.6.10 Software Reset
      11. 8.6.11 Consecutive Alert Register
      12. 8.6.12 Therm Hysteresis Register
      13. 8.6.13 Identification Registers
      14. 8.6.14 Open Status Register
      15. 8.6.15 Channel Mask Register
      16. 8.6.16 High Limit Status Register
      17. 8.6.17 Low Limit Status Register
      18. 8.6.18 THERM Limit Status Register
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curve
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Examples
  12. 12器件和文档支持
    1. 12.1 相关链接
    2. 12.2 社区资源
    3. 12.3 商标
    4. 12.4 静电放电警告
    5. 12.5 Glossary
  13. 13机械、封装和可订购信息

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

6.5 Electrical Characteristics

at TA = –40°C to 125°C and V+ = 2.7 V to 5.5 V (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
TEMPERATURE ERROR
TELOCAL Local temperature sensor TA = –40°C to 125°C ±1.25 ±2.5 °C
TA = 0°C to 100°C, V+ = 3.3 V ±0.25 ±1
TEREMOTE Remote temperature sensor (1) TA = 0°C to 100°C, TDIODE = –40°C to 150°C, V+ = 3.3 V ±0.25 ±1 °C
TA = –40°C to 100°C, TDIODE = –40°C to 150°C, V+ = 3.3 V ±0.5 ±1.5
TA = –40°C to 125°C, TDIODE = –40°C to 150°C ±3 ±5
vs supply (local, remote) V+ = 2.7 V to 5.5 V ±0.2 ±0.5 °C/V
TEMPERATURE MEASUREMENT CONVERSION TIME (PER CHANNEL)
Local channel 12 15 17 ms
Remote channel,
beta correction enabled(2) 		RC = 1 97 126 137 ms
RC = 0 36 47 52
Remote channel,
beta correction disabled(3) 		RC = 1 72 93 100 ms
RC = 0 33 44 47
TEMPERATURE MEASUREMENT RESOLUTION
Local channel 12 Bits
Remote channel 12 Bits
TEMPERATURE MEASUREMENT REMOTE SENSOR SOURCE CURRENTS
High Series resistance (beta correction)(4) 120 μA
Medium-high 60 μA
Medium-low 12 μA
Low 6 μA
η Remote transistor ideality factor TMP43x optimized ideality factor 1.000(2)
1.008(3)
β Beta correction range 0.1 27
SMBus INTERFACE
VIH Logic input high voltage
(SCL, SDA)		 2.1 V
VIL Logic input low voltage (SCL, SDA) 0.8 V
Hysteresis 500 mV
SMBus output low sink current 6 mA
VOL SDA output low voltage IOUT = 6 mA 0.15 0.4 V
Logic input current 0 ≤ VIN ≤ 6 V –1 1 μA
SMBus input capacitance
(SCL, SDA)		 3 pF
SMBus clock frequency 3.4 MHz
SMBus timeout 25 32 35 ms
SCL falling edge to SDA valid time 1 μs
DIGITAL OUTPUTS
VOL Output low voltage IOUT = 6 mA 0.15 0.4 V
IOH High-level output leakage current VOUT = V+ 0.1 1 μA
ALERT/THERM2 output low
sink current		 ALERT/THERM2 forced to 0.4 V 6 mA
THERM output low sink current THERM2 forced to 0.4 V 6 mA
POWER SUPPLY
V+ Specified voltage range 2.7 5.5 V
IQ Quiescent current 0.0625 conversions per second, V+ = 3.3 V 35 45 μA
Eight conversions per second, V+ = 3.3 V (5) 0.7 1 mA
Serial bus inactive, shutdown mode 3 10 μA
Serial bus active, fS = 400 kHz, shutdown mode 90
Serial bus active, fS = 3.4 MHz, shutdown mode 350
UVLO Undervoltage lockout 2.3 2.4 2.6 V
POR Power-on reset threshold 1.6 2.3 V
Specified temperature range –40 125 °C
Storage temperature range –60 130 °C
(1) Tested with less than 5-Ω effective series resistance and 100-pF differential input capacitance. TA is the ambient temperature of the TMP43x. TDIODE is the temperature at the remote diode sensor.
(2) Beta correction configuration set to 1000 and sensor is GND collector-connected (PNP collector to ground).
(3) Beta correction configuration set to 0111 or sensor is diode-connected (base shorted to collector).
(4) If beta correction is disabled (0111), then up to 1-kΩ of series line resistance is cancelled; if beta correction is enabled (1xxx), up to
300 Ω is cancelled.
(5) Beta correction disabled.
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