Texas Instruments TMP236A4DBZT

Overview

TMP236A4DBZT from Texas Instruments is a precision analog-output temperature sensor in a 3-pin SOT-23 package, delivering ±1°C typical accuracy over –10°C to +125°C, 19.5 mV/°C gain, 400 mV offset at 0°C, and 10 µA typical supply current - used for high-fidelity thermal monitoring in automotive infotainment and industrial control systems.

For engineers reviewing the TMP236A4DBZT datasheet, TMP236A4DBZT pinout, TMP236A4DBZT application, or TMP236A4DBZT equivalent, this page provides verified functional specifications, validated SOT-23 pin mapping, confirmed operating range limits, and real-world ADC interface guidance - all aligned with TI's SBOS857E production data sheet.

Technical Context

The TMP236A4DBZT implements a CMOS-based linear analog temperature sensing architecture with a class-AB output driver capable of sourcing up to 500 µA into capacitive loads ≤1000 pF. Its piecewise-linear transfer function uses two segments (–10°C to 100°C and 100°C to 125°C) with distinct gain (19.5 mV/°C and 19.7 mV/°C) and offset (400 mV and 2350 mV) values to maintain ±1°C typical accuracy across its full operating range.

It operates from 3.1 V to 5.5 V, features short-circuit protected output, exhibits ±0.1 °C/V line regulation, and achieves 800 µs power-on settling time to ±0.5°C accuracy - enabling direct connection to SAR ADC sample-and-hold inputs without external buffering in low-noise designs.

Key Specifications

Pinout & Package

Package: 3-pin SOT-23 (DBZ), body size 2.92 mm × 1.30 mm, surface-mount, RoHS-compliant, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar analog-output temperature sensing applications.

Compared with LMT86DBVR and TMP235A4DBZR, TMP236A4DBZT offers the highest sensitivity (19.5 mV/°C) within its –10°C to +125°C range, making it optimal for applications prioritizing ADC resolution and fast thermal response over extreme low-temperature coverage or ultra-low supply voltage.

Availability

TMP236A4DBZT is available at Aetrix Electronics and suitable for automotive infotainment, industrial motor control, and wireless infrastructure requiring stable component supply and long-term manufacturability assurance.

Supply support for TMP236A4DBZT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company specializing in analog and embedded processing technologies, with leadership in precision sensing, power management, and signal chain solutions.

The TMP23x product line was designed for cost-effective, high-accuracy analog temperature measurement in space-constrained, low-power systems - targeting automotive, industrial, and communications applications where thermistor replacement is needed without sacrificing performance.

FAQ

What is the operating temperature range of the TMP236A4DBZT?

The TMP236A4DBZT operates from –10°C to +125°C with ±1°C typical accuracy across that full range. It is not specified for operation below –10°C or above +125°C; attempting use outside these limits may result in unvalidated accuracy or reliability degradation. The device's piecewise-linear transfer function is calibrated specifically for this interval, using two gain/offset segments to maintain precision.

Does the TMP236A4DBZT require external calibration?

No, the TMP236A4DBZT does not require external calibration for ±1°C typical accuracy over –10°C to +125°C. Its factory-trimmed analog circuitry and piecewise-linear characterization eliminate the need for user calibration. However, system-level calibration (e.g., at 25°C and 85°C) can further reduce total error to <±0.5°C if required by application-specific standards such as ISO 26262 ASIL-B thermal monitoring.

Can the TMP236A4DBZT drive a 1000-pF load directly?

Yes, the TMP236A4DBZT is characterized to drive up to 1000 pF capacitive load directly, including ADC input capacitance, multiplexer capacitance, and external filter capacitors. Its class-AB output stage delivers 500 µA maximum current and maintains stability under these conditions. TI recommends using a 680-pF CFILTER in series with the ADC input to stay within the 1000-pF limit while minimizing sampling error.

What is the supply voltage range for the TMP236A4DBZT?

The TMP236A4DBZT requires a supply voltage between 3.1 V and 5.5 V. Operation below 3.1 V is not guaranteed and may cause output saturation or increased inaccuracy; operation above 5.5 V violates absolute maximum ratings and risks permanent damage. A 0.1-µF ceramic bypass capacitor placed close to the VDD pin is strongly recommended to suppress supply noise.

Is the TMP236A4DBZT pin-compatible with other TMP23x variants?

Yes, the TMP236A4DBZT shares identical 3-pin SOT-23 (DBZ) pinout with all other TMP23x DBZ variants - VDD (Pin 1), VOUT (Pin 2), GND (Pin 3). This allows direct substitution within the same package family without PCB changes, provided the application's temperature range (–10°C to +125°C) and supply voltage (≥3.1 V) align with TMP236 requirements.