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Texas Instruments TMP302CDRLR
- Part No.:
- TMP302CDRLR
- Manufacturer:
- Texas Instruments
- Category:
- Thermostats - Solid State
- Package:
- SOT-563, SOT-666
- Datasheet:
-
TMP302CDRLR.pdf
- Description:
- THERMOSTAT ACT LOW OPEN DRN 6SOT
- Quantity:
- Payment:
- Shipping:
Inventory:7,000
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Product details
Overview
TMP302CDRLR from Texas Instruments is a precision, low-power temperature switch in SOT-563 (DRL) package, featuring pin-selectable trip points of 90°C, 95°C, 100°C, or 105°C, ±0.2°C typical trip accuracy from +40°C to +125°C, and open-drain active-low output for thermal overtemperature protection in space-constrained DC-DC modules.
For engineers reviewing the TMP302CDRLR datasheet, TMP302CDRLR pinout, TMP302CDRLR application, or TMP302CDRLR equivalent, key selection criteria include its 15 μA max quiescent current, 1.4 V to 3.6 V supply range, 5°C/10°C selectable hysteresis, SOT-563 footprint compatibility, and direct integration into thermal shutdown circuits without microcontroller dependency.
Technical Context
The TMP302CDRLR implements a fully self-contained analog temperature sensing path with internal bandgap reference, comparator, and digital input decoding logic for TRIPSET0/TRIPSET1/HYSTSET pins-enabling four discrete trip thresholds and two hysteresis modes without external calibration or firmware. Its open-drain OUT pin drives external pull-up networks to interface directly with host system reset or interrupt lines.
Operating across –40°C to +125°C ambient, the device achieves stable trip-point performance with ±0.2°C typical accuracy and <±0.5°C/V supply sensitivity, while maintaining functional validity within 35 ms of power-on at VS ≥ 1.4 V-making it suitable for fast-response thermal monitoring in battery-powered and always-on systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Trip Points | 90°C, 95°C, 100°C, or 105°C - selected via TRIPSET0/TRIPSET1 pin combinations; fixed per TMP302C variant |
| Trip Accuracy | ±0.2°C (typical) from +40°C to +125°C - enables tight thermal margin control in safety-critical shutdown paths |
| Quiescent Current | 8–15 μA - supports multi-year operation in coin-cell or energy-harvesting applications |
| Supply Range | 1.4 V to 3.6 V - compatible with single-cell Li-ion, 1.8 V/3.3 V logic rails, and low-voltage PMIC outputs |
| Hysteresis Options | 5°C (HYSTSET = GND) or 10°C (HYSTSET = VS) - prevents output chatter near threshold during slow thermal transients |
| Output Type | Open-drain, active-low - allows wired-OR configuration and level-shifting with external pull-up to any compatible voltage rail |
| Package | SOT-563 (DRL), 1.6 mm × 1.6 mm × 0.6 mm - ultra-compact footprint for high-density PCB layouts in portable electronics |
Pinout & Package
SOT-563 (DRL) package: 6-pin micropackage, 1.6 mm × 1.6 mm × 0.6 mm body, gull-wing leads, RoHS-compliant NiPdAu finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - TRIPSET0 | Digital input | LSB of trip-point selection; combined with TRIPSET1 to configure 90/95/100/105°C threshold |
| 2 - GND | Ground reference | Primary return path for internal sensor, comparator, and digital logic; must be low-impedance |
| 3 - OUT | Digital output | Open-drain, active-low alert signal; requires external pull-up resistor (10–100 kΩ) to VS or another 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 input; bypass capacitor (0.1 µF) required adjacent to pin for noise immunity |
| 6 - TRIPSET1 | Digital input | MSB of trip-point selection; combined with TRIPSET0 to configure 90/95/100/105°C threshold |
Key Features
| Feature | Design Value |
|---|---|
| No external components required | Operates standalone with only bypass cap and pull-up resistor-eliminates BOM count and layout complexity |
| Pin-selectable trip points | Four factory-defined thresholds (90/95/100/105°C) set by hardwiring TRIPSET0/TRIPSET1 to GND/VS-no programming or I²C needed |
| Configurable thermal hysteresis | 5°C or 10°C window selected via HYSTSET pin-prevents oscillation during gradual temperature recovery |
| Ultra-low quiescent current | Max 15 μA across full temperature range-enables continuous monitoring in always-on battery systems |
| Wide supply voltage range | 1.4 V to 3.6 V operation-supports legacy 1.8 V rails and modern low-voltage DC-DC converters |
Applications
| Cell Phone Thermal Protection | DC-DC Module Overtemperature Shutdown |
|---|---|
|
Use Scenario: Monitors baseband processor or RF power amplifier die temperature during sustained transmit bursts. IC Role / Device Role / Timing Role: Standalone temperature switch asserting active-low interrupt to application processor upon reaching 95°C. Use Value: Prevents thermal throttling-induced latency spikes by triggering early-stage throttling or forced sleep before critical junction temperatures are reached. |
Use Scenario: Embedded in point-of-load (POL) converter PCB to detect heatsink or inductor core overheating under overload conditions. IC Role / Device Role / Timing Role: Directly disables PWM controller enable line via open-drain OUT tied to EN pin through pull-up. Use Value: Enables autonomous, sub-100 ms thermal shutdown without MCU intervention-critical for maintaining system reliability during transient faults. |
| Server Fan Speed Control Trigger | Portable Media Player Battery Safety |
|
Use Scenario: Mounted on CPU VRM MOSFET array to initiate progressive fan speed ramp when local board temperature exceeds 100°C. IC Role / Device Role / Timing Role: Provides clean, debounced thermal event signal to fan controller IC's THERM input pin. Use Value: Eliminates software polling delay and reduces host CPU thermal management overhead-improves acoustic performance and power efficiency. |
Use Scenario: Integrated into lithium-polymer battery pack PCB to monitor cell temperature during fast charging cycles. IC Role / Device Role / Timing Role: Trip at 90°C to disable charging FET gate driver via active-low latch circuit. Use Value: Meets UL 2054 and IEC 62133 thermal cutoff requirements with ±0.2°C accuracy-ensures consistent safety margin across production units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar temperature switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6505UTP+T | Fixed 75°C trip point; 3.0–5.5 V supply; SOT23-5 package; ±3°C accuracy | Lacks pin-selectable thresholds and hysteresis; suited for cost-sensitive, single-threshold designs | Choose when fixed trip point suffices and higher accuracy is not required-lower unit cost but less design flexibility |
| LM75BIMMX/NOPB | I²C digital temperature sensor + thermostat; 1°C resolution; 2.7–5.5 V; SOIC-8; ±2°C accuracy | Requires MCU interface and firmware; supports programmable thresholds and multiple addresses | Choose when dynamic threshold adjustment or multi-sensor bus topology is needed-adds software overhead but greater configurability |
Compared with MAX6505UTP+T and LM75BIMMX/NOPB, the TMP302CDRLR delivers superior trip accuracy (±0.2°C vs ±2–3°C), lower power (15 μA vs 250 μA), smaller footprint (SOT-563 vs SOT23-5/SOIC-8), and zero-firmware operation-making it optimal for deterministic, ultra-low-power thermal shutdown where pin-strapped simplicity is prioritized.
Availability
TMP302CDRLR is available at Aetrix Electronics and suitable for DC-DC modules, server thermal management, portable media players, and battery safety systems requiring stable component supply with guaranteed long-term manufacturability.
Supply support for TMP302CDRLR 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 delivering analog and embedded processing solutions, with leadership in precision analog, power management, and signal chain technologies.
The TMP302CDRLR belongs to TI's precision temperature switch product line, designed specifically for autonomous, low-power thermal protection in space-constrained consumer, computing, and power electronics applications.
FAQ
What is the exact trip-point range supported by TMP302CDRLR?
The TMP302CDRLR supports four discrete, factory-set trip points: 90°C, 95°C, 100°C, and 105°C. These are selected exclusively via the logic states of TRIPSET0 and TRIPSET1 pins (GND or VS). Unlike other variants (e.g., TMP302A/B/D), the 'C' suffix denotes this specific 90–105°C range and is not configurable outside these values. The TMP302CDRLR datasheet Table 1 confirms these thresholds are fixed per device variant.
Does TMP302CDRLR require a microcontroller to operate?
No, the TMP302CDRLR operates autonomously without any microcontroller or firmware. It integrates a complete analog temperature sensing path, comparator, and digital input decoder. Once powered (1.4–3.6 V) and configured via TRIPSET0/TRIPSET1/HYSTSET pin connections, the TMP302CDRLR continuously monitors temperature and asserts its open-drain OUT pin low when the selected threshold is exceeded-enabling direct hardware-level thermal protection.
What is the recommended pull-up resistor value for TMP302CDRLR's OUT pin?
Texas Instruments specifies a pull-up resistor range of 10 kΩ to 100 kΩ from the TMP302CDRLR OUT pin to VS (or another compatible rail). A 10 kΩ value ensures robust noise immunity and fast rise time, while higher values (e.g., 47–100 kΩ) reduce total system current-particularly beneficial in battery-powered applications. The TMP302CDRLR datasheet Section 6.5 confirms VOL remains ≤0.4 V at IOL = 3 mA across this range.
Can TMP302CDRLR be used in automotive applications?
The standard TMP302CDRLR is not qualified for automotive use. However, TI offers the TMP302-Q1 variant, which is AEC-Q100 Grade 2 qualified (–40°C to +105°C ambient) and manufactured in an automotive-grade flow. For automotive thermal monitoring, the TMP302-Q1-not the TMP302CDRLR-is the appropriate choice, as it includes enhanced reliability testing, extended temperature validation, and automotive-specific documentation and traceability.
How does hysteresis work on TMP302CDRLR, and how is it configured?
Hysteresis on the TMP302CDRLR prevents output oscillation near the trip point by requiring temperature to fall below the threshold by a defined delta before the OUT pin returns high. It is configured solely via the HYSTSET pin: connect to GND for 5°C hysteresis or to VS for 10°C hysteresis. For example, with a 100°C trip point and HYSTSET = VS, OUT remains low until temperature drops to 90°C. This behavior is explicitly defined in TMP302CDRLR datasheet Table 2 and Section 7.3.1.
TMP302CDRLR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-563, SOT-666
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Trip Temperature Threshold:
- Hot
- Switching Temperature:
- 90°C, 95°C, 100°C, 105°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
TMP302CDRLR FAQ
1.How can I place an order for TMP302CDRLR through Aetrix?
Please submit a Request for Quotation (RFQ) for TMP302CDRLR 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 TMP302CDRLR reliable?
The price and inventory of TMP302CDRLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMP302CDRLR is usually 5 days.
3.What payment methods are accepted for TMP302CDRLR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMP302CDRLR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMP302CDRLR?
TMP302CDRLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMP302CDRLR 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 TMP302CDRLR?
For technical support, including TMP302CDRLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMP302CDRLR requirements.
6.How does Aetrix verify that TMP302CDRLR is sourced from the original manufacturer or authorized distributors?
All TMP302CDRLR 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 TMP302CDRLR meets industry standards.
7.What is the process for return or replacement of TMP302CDRLR?
All TMP302CDRLR units undergo pre-shipment inspection (PSI). If there is an issue with TMP302CDRLR, 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 TMP302CDRLR part is unused and in its original packaging.
Return procedure for TMP302CDRLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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