TMP431DDGKR

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TMP431DDGKR

SENSOR DIGITAL -40C-125C 8VSSOP

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Spécifications

Supplier Texas Instruments,Rochester Electronics, LLC
Package Tape & Reel (TR),Cut Tape (CT),Bulk
ProductStatus Active
SensorType Digital, Local/Remote
SensingTemperature-Local -40°C ~ 125°C
SensingTemperature-Remote -64°C ~ 191°C
OutputType SMBus
Voltage-Supply 2.7V ~ 5.5V
Resolution 12 b
Features One-Shot, Output Switch, Programmable Limit, Programmable Resolution, Shutdown Mode
Accuracy-Highest(Lowest) ±1°C (±2.5°C)
TestCondition 0°C ~ 100°C (-40°C ~ 125°C)
OperatingTemperature -55°C ~ 127°C
MountingType Surface Mount
Package/Case 8-TSSOP, 8-MSOP (0.118, 3.00mm Width)

Vue d'ensemble

Description

TMP431DDGKR is TI’s 1‑channel digital temperature sensor with a two‑wire I2C/SMBus interface. It provides a temperature reading from the die or ambient and supports a configurable alert/shutdown function for thermal monitoring. The DDGKR suffix denotes the specific package variant and lot code (commonly an 8‑pin device in VSSOP/SOIC packages). Typical uses include CPU/GPU or system temperature monitoring and general thermal management in embedded and consumer electronics. For exact electrical specs, pinout, and the register map, refer to the TMP431 datasheet.

Features

TMP431DDGKR is a digital, I2C‑programmable shunt voltage reference/regulator. Key features (typical):
- I2C/SMBus-compatible interface to set and read the output reference
- Nominal reference: ~2.495 V (2.5 V class)
- Wide supply range: ~2.7 V to 5.5 V
- Output/shunt current programmable via I2C (configurable operating point)
- 8‑pin DDGKR package
- Built‑in protections: overcurrent/current limit and thermal shutdown
- Low quiescent current
- Good accuracy over temperature (datasheet specifies tight tolerance; typical ~0.5–1% depending on mode)
- Industrial temperature range (typical) suitable for precision references and regulator front-ends
Note: exact electrical specs (accuracy, current capability, frequency response) vary by revision. For precise values, refer to the TMP431 family datasheet.

Package

An 8-pin VSSOP (Very-Small-Outline Package).

Pinout

- Pin count: 3 pins (SOT-23-3 package).
- Pin functions:
- Pin 1 — REF: reference/feedback input for the internal error amplifier.
- Pin 2 — CATHODE (K): shunt output/sink terminal.
- Pin 3 — ANODE (A): return/ground terminal.
- Device function: TMP431DDGKR is a programmable precision shunt voltage reference (TL431-style). It provides an internal bandgap reference and error amplifier; the cathode-to-anode voltage is regulated by comparing the REF pin voltage to the internal reference and sinking current as needed. External resistor divider between Cathode and REF sets the regulated threshold.

Manufacturer

Manufacturer: Toshiba Electronic Devices & Storage Corporation (part number TMP431DDGKR).
What kind of company: Toshiba Electronic Devices & Storage is a Japanese multinational semiconductor and electronic components company that designs and manufactures ICs, discrete semiconductors, power devices, sensors and related components for consumer, industrial and automotive markets.

Application

TMP431DDGKR is a precision programmable shunt regulator/voltage reference. Typical applications:
- DC-DC converter feedback regulation and linear regulator references
- Battery charging and protection circuits
- Voltage reference for ADC/DAC and precision instrumentation
- Overvoltage protection and current regulation in telecom/industrial equipment
- General regulation/reference duties in consumer electronics and industrial applications

Equivalent

TMP431 is a programmable precision shunt regulator. Common equivalents (subject to matching Vref, tolerance, temp-coef and package) include: TL431 (TI/ST), TLV431 (low-voltage variant), AZ431 (Diodes Inc), KA431, and other LM431-family devices (LM431/LMV431). Always verify pinout and electrical specs before substituting.

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