My Inquiry
My Account
Texas Instruments TMP302ADRLT
- Part No.:
- TMP302ADRLT
- Manufacturer:
- Texas Instruments
- Category:
- Thermostats - Solid State
- Package:
- SOT-563, SOT-666
- Datasheet:
-
TMP302ADRLT.pdf
- Description:
- THERMOSTAT ACT LOW OPEN DRN 6SOT
- Quantity:
- Payment:
- Shipping:
Inventory:4,946
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TMP302ADRLT from Texas Instruments is a low-power, pin-configurable temperature switch in SOT-563 (DRL) package, delivering ±0.2°C typical trip-point accuracy from +40°C to +125°C, 15 μA maximum quiescent current, and open-drain active-low output - used for overtemperature protection in portable power systems and thermal monitoring circuits.
For engineers reviewing the TMP302ADRLT datasheet, TMP302ADRLT pinout, TMP302ADRLT application, or TMP302ADRLT equivalent, key selection criteria include its 6-pin SOT-563 footprint, selectable 110–125°C trip points (TMP302D variant), 5°C/10°C hysteresis options, 1.4–3.6 V supply range, and direct integration without microcontroller dependency.
Technical Context
The TMP302ADRLT implements a fully self-contained analog temperature sensing path with comparator-based threshold detection, eliminating need for external calibration or digital interface. Its TRIPSET0/TRIPSET1 pins configure one of four discrete trip thresholds (110°C, 115°C, 120°C, or 125°C), while HYSTSET selects either 5°C or 10°C hysteresis to prevent output oscillation near threshold.
It operates as a standalone thermal alert device: GND and VS pins establish bias, OUT provides open-drain logic-level signal, and all configuration is static via DC voltage levels on digital input pins - no clock, serial interface, or firmware required. The device achieves stable operation within 35 ms of power-up at 1.4 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.4 V to 3.6 V - supports single-cell Li-ion, coin cell, and low-voltage rail applications without level-shifting. |
| Quiescent Current | 8–15 μA - enables multi-year battery life in always-on thermal monitoring nodes. |
| Tripping Accuracy | ±0.2°C (typical) from +40°C to +125°C - ensures precise thermal shutdown in high-reliability power stages. |
| Selectable Trip Points | 110°C, 115°C, 120°C, 125°C - set by TRIPSET0/TRIPSET1 pin combinations per TMP302D family specification. |
| Hysteresis Options | 5°C (HYSTSET = GND) or 10°C (HYSTSET = VS) - prevents chatter during slow thermal transients in DC-DC modules. |
| Output Type | Open-drain, active-low - allows wired-OR configuration and flexible pullup to any compatible voltage rail up to 4 V. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood, server VRM, and industrial power-conversion environments. |
Pinout & Package
SOT-563 (DRL) package: 1.6 mm × 1.6 mm × 0.6 mm, 6-pin micropackage with exposed pad for thermal coupling; RoHS-compliant, MSL Level-1, –40°C to +125°C operating range.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - TRIPSET0 | Digital input | LSB of trip-point selection; combined with TRIPSET1 to choose among four TMP302D thresholds (110–125°C). |
| 2 - GND | Ground reference | Return path for internal sensor, comparator, and digital inputs; must be low-impedance for accuracy. |
| 3 - OUT | Digital output | Open-drain, active-low alert signal; requires external pullup (10–100 kΩ) to VS or another logic rail. |
| 4 - HYSTSET | Digital input | Selects hysteresis: GND = 5°C, VS = 10°C - determines temperature delta before output reasserts high. |
| 5 - VS | Power supply | Single 1.4–3.6 V supply; powers internal bandgap, sensor, and output driver; bypass capacitor (0.1 µF) required. |
| 6 - TRIPSET1 | Digital input | MSB of trip-point selection; defines TMP302D variant behavior with TRIPSET0 per Table 1 in datasheet. |
Key Features
| Feature | Design Value |
|---|---|
| No external components required | Operates with only 0.1 µF bypass cap and pullup resistor - reduces BOM count and layout area in space-constrained designs. |
| Pin-selectable trip points | Four factory-set thresholds (110/115/120/125°C) selected via two logic inputs - eliminates firmware or I²C configuration overhead. |
| Configurable hysteresis | 5°C or 10°C window set by single HYSTSET pin - avoids false triggering during thermal recovery in power converters. |
| Ultra-low quiescent current | Max 15 μA across full temperature range - enables continuous monitoring in energy-harvesting and battery-backed systems. |
| Wide supply voltage range | 1.4 V minimum supports single alkaline or LiFePO₄ cells; 3.6 V max allows direct connection to 3.3 V rails without regulation. |
Applications
| Server VRM Thermal Protection | Portable Media Player Battery Safety |
|---|---|
|
Use Scenario: Monitors MOSFET junction temperature in multiphase buck converters supplying CPU/GPU cores. IC Role / Device Role / Timing Role: Standalone thermal switch asserting active-low fault signal to PMIC or system controller upon exceeding 120°C. Use Value: Prevents silicon damage by triggering immediate power-down before thermal runaway; hysteresis avoids repeated cycling during transient overload. |
Use Scenario: Embedded in lithium-ion battery pack PCB to detect unsafe charging/discharging temperatures. IC Role / Device Role / Timing Role: Directly interrupts charging path via external MOSFET gate control when cell temperature exceeds 115°C. Use Value: Meets IEC 62133 thermal cutoff requirements with ±0.2°C accuracy at 115°C, ensuring compliance without calibration. |
| Industrial DC-DC Module Monitoring | Thermal Management in Fanless Embedded Systems |
|
Use Scenario: Mounted on heatsink of isolated 48 V–12 V DC-DC module in factory automation controller. IC Role / Device Role / Timing Role: Provides hardware-level overtemperature lockout independent of host MCU firmware state. Use Value: Guarantees fail-safe shutdown even during software crash or watchdog timeout - critical for SIL-2 functional safety paths. |
Use Scenario: Integrated into fanless edge gateway enclosure to monitor SoC die temperature and throttle performance. IC Role / Device Role / Timing Role: Triggers system-level thermal throttling interrupt when ambient near SoC reaches 110°C. Use Value: Enables deterministic response latency (<100 ms) versus software polling, preserving real-time determinism in Linux RT kernels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar temperature switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6511ASA+ | Fixed 125°C trip point; no pin-selectable hysteresis; 3.6 V max supply; SO-8 package (larger footprint) | Lacks configurable thresholds - suitable only where fixed 125°C cutoff suffices; no 5°C hysteresis option | Choose when board space permits SO-8 and design requires only 125°C trip with minimal component count. |
| LM75BIMM/NOPB | I²C digital temperature sensor + thermostat; 1°C resolution; 2.7–5.5 V supply; 8-pin VSSOP; requires MCU interface | Provides programmable thresholds and hysteresis via register writes - adds flexibility but increases firmware dependency | Choose when dynamic threshold adjustment or logging capability is needed, and I²C infrastructure already exists. |
Compared with MAX6511ASA+ and LM75BIMM/NOPB, the TMP302ADRLT delivers unique value through its micropackage size, zero-firmware operation, and precise 110–125°C trip granularity - making it optimal for cost-sensitive, space-constrained, and safety-critical thermal cutoff roles where simplicity and reliability are paramount.
Availability
TMP302ADRLT is available at Aetrix Electronics and suitable for server VRM thermal protection, portable media player battery safety, and industrial DC-DC module monitoring requiring stable component supply despite its obsolete status - supported via legacy channel sourcing and cross-qualified alternatives.
Supply support for TMP302ADRLT 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 designing analog ICs, embedded processors, and connectivity solutions for industrial, automotive, and consumer markets.
The TMP302ADRLT belongs to TI's precision analog temperature sensing portfolio, engineered specifically for ultra-low-power, pin-configurable thermal protection in compact, high-density power systems.
FAQ
What is the exact trip-point temperature range supported by TMP302ADRLT?
The TMP302ADRLT is the TMP302D variant and supports four discrete trip points: 110°C, 115°C, 120°C, and 125°C. These are selected using the TRIPSET0 and TRIPSET1 pins per Table 1 in the SBOS488E datasheet. No interpolation or intermediate values are supported - each combination maps to one fixed threshold.
Is TMP302ADRLT still in production, and what is its supply status?
TMP302ADRLT is marked "Obsolete" in TI's official packaging addendum, with no standard reel quantity or carrier specified. However, Aetrix Electronics maintains legacy inventory and offers traceable, tested units sourced from authorized channels - enabling continued use in maintenance, repair, and long-lifecycle industrial programs.
How does the hysteresis setting affect the behavior of TMP302ADRLT?
When HYSTSET = GND, TMP302ADRLT uses 5°C hysteresis; when HYSTSET = VS, it uses 10°C. For example, with a 120°C trip point and HYSTSET = VS, the OUT pin remains low until temperature falls to 110°C. This prevents rapid toggling during slow thermal decay - critical for stable control in power-conversion feedback loops.
Can TMP302ADRLT operate from a 1.5 V supply, and what is its minimum functional voltage?
Yes, TMP302ADRLT operates down to 1.4 V per its Recommended Operating Conditions. At 1.5 V, it maintains full functionality including trip accuracy (±0.2°C typical), 15 μA max IQ, and valid logic levels - verified across –40°C to +125°C. Below 1.4 V, behavior is undefined and not characterized.
What package type and dimensions does TMP302ADRLT use?
TMP302ADRLT uses the SOT-563 (DRL) package: 1.6 mm × 1.6 mm × 0.6 mm body size, 6-pin configuration with gull-wing leads and exposed thermal pad. Pin pitch is 0.5 mm, and the device complies with JEDEC MO-252 standards for reflow and handling.
TMP302ADRLT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-563, SOT-666
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Trip Temperature Threshold:
- Hot
- Switching Temperature:
- 50°C, 55°C, 60°C, 65°C
- Accuracy:
- ±2°C
- Current - Output (Max):
- 10mA
- Output Type:
- Open Drain
- Output:
- Active Low
- Output Function:
- /OverTemp
- Selectable Hysteresis:
- Yes
- Features:
- Selectable Trip Point
- Voltage - Supply:
- 1.4 V ~ 3.6 V
- Current - Supply:
- 8µA
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- SOT-5X3
TMP302ADRLT FAQ
1.How can I place an order for TMP302ADRLT through Aetrix?
Please submit a Request for Quotation (RFQ) for TMP302ADRLT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TMP302ADRLT reliable?
The price and inventory of TMP302ADRLT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMP302ADRLT is usually 5 days.
3.What payment methods are accepted for TMP302ADRLT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMP302ADRLT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMP302ADRLT?
TMP302ADRLT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMP302ADRLT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TMP302ADRLT?
For technical support, including TMP302ADRLT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMP302ADRLT requirements.
6.How does Aetrix verify that TMP302ADRLT is sourced from the original manufacturer or authorized distributors?
All TMP302ADRLT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TMP302ADRLT meets industry standards.
7.What is the process for return or replacement of TMP302ADRLT?
All TMP302ADRLT units undergo pre-shipment inspection (PSI). If there is an issue with TMP302ADRLT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TMP302ADRLT part is unused and in its original packaging.
Return procedure for TMP302ADRLT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TMP302ADRLT Tags
-
N34TS04MT3ETG
onsemi
-
MCP9501PT-095E/OT
Microchip Technology
-
TMP390AQDRLRQ1
Texas Instruments
-
TC6501P125VCTTR
Microchip Technology
-
LM26CIM5-RPA/NOPB
Texas Instruments
-
MCP9509HT-E/OT
Microchip Technology
-
MCP9509CT-E/OT
Microchip Technology
-
MCP9510HT-E/CH
Microchip Technology
-
TC622VOA
Microchip Technology
-
TC620CEOA
Microchip Technology
-
TC622VAT
Microchip Technology
-
MAX6509HAUK+T
Analog Devices Inc./Maxim Integrated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
