LM26LVCISD-145/NOPB Texas Instruments Thermistor (Small Outline No-lead) In Stock
Texas Instruments LM26LVCISD-145/NOPB is a factory-programmed temperature switch with ±2.3°C accuracy, operating from as low as 1.6 V in a 2.5 mm × 2.2 mm SOT-23-like SMD package. It draws only 16 µA maximum supply current for always-on thermal protection in ultra-low-power systems. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline No-lead
- Pin Count
- 7
- Lifecycle
- ACTIVE
- Datasheet
- LM26LVCISD-145/NOPB Datasheet PDF
- Category
- Thermistor
- Price
- From $0.4126(MOQ 1000)
- Temp Range
- ?°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Factory-programmed trip point at –14.5°C (–145 in part suffix) with ±2.3°C accuracy, eliminating external resistor trim and ensuring consistent thermal switch behavior across production
- 1.6 V minimum operating voltage and 16 µA maximum supply current enables always-on thermal monitoring in coin-cell and energy-harvesting powered IoT nodes
- Compact 2.5 mm × 2.2 mm × 0.8 mm SOL package with Pb-free JESD-609 e3 compliance for space-constrained PCB thermal protection circuits
Applications
The LM26LVCISD-145/NOPB is used in battery-management systems, IoT sensor nodes, and wearable devices where a low-power always-on temperature switch must trigger a protective action — such as disabling charging or asserting an interrupt — when temperature drops below the –14.5°C factory-set threshold. Its 1.6 V supply compatibility and 16 µA quiescent current suit energy-harvesting and coin-cell applications where a conventional op-amp-based comparator circuit would consume too much power.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Accuracy-Max (Cel) | 2.3Cel |
| Additional Feature | IT ALSO HAS ACCURACY MINUS 2.3, 2.2 AND 1.7 |
| Body Breadth | 2.2mm |
| Body Height | 0.8mm |
| Body Length or Diameter | 2.5mm |
| JESD-609 Code | e3 |
| Mounting Feature | SURFACE MOUNT |
| Operating Current-Max | 0.016mA |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOLCC6,.1,25 |
| Package Shape/Style | RECTANGULAR |
| Sensors/Transducers Type | TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SINGLE TRIP POINT |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 1.6V |
| Surface Mount | YES |
| Terminal Finish | Matte Tin (Sn) |
| Termination Type | SOLDER |
| Package | Small Outline No-lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
At what temperature does LM26LVCISD-145/NOPB switch, and what is its accuracy?
LM26LVCISD-145/NOPB has a factory-programmed trip point at –14.5°C (the –145 suffix denotes –14.5°C in tenths of a degree). The switch accuracy is ±2.3°C maximum, meaning the output transitions between –16.8°C and –12.2°C in the worst case. This is sufficient for cold-temperature charge inhibit circuits in lithium-ion battery packs, where charging below –10°C can cause lithium plating and cell damage.
How does LM26LVCISD-145/NOPB's 16 µA supply current compare to discrete comparator-based temperature switch alternatives?
A discrete temperature switch using a thermistor, a precision comparator, and a voltage reference typically consumes 100 µA to 500 µA combined — 6× to 30× more than the LM26LVCISD-145/NOPB's 16 µA maximum. In a coin-cell powered application drawing 10 µA average from a 220 mAh CR2032 cell, the additional 84 µA to 484 µA from a discrete solution would reduce battery life from over 2 years to 5 to 25 months. The integrated solution also removes 3 to 5 passive components.
For a cold-weather outdoor IoT sensor operating from a 1.8 V LDO, how does LM26LVCISD-145/NOPB fit into the power architecture?
LM26LVCISD-145/NOPB operates down to 1.6 V supply, so a 1.8 V LDO output provides a 0.2 V margin above the minimum operating voltage. The device draws at most 16 µA continuously, adding less than 0.03 mW to the system power budget. When ambient temperature falls below –14.5°C, the open-drain output can drive a microcontroller GPIO interrupt pin directly, triggering firmware to suspend radio transmissions and protect the lithium-ion cell from sub-zero charging conditions.
How compact is the LM26LVCISD-145/NOPB package, and what PCB footprint does it require?
LM26LVCISD-145/NOPB uses a 2.5 mm × 2.2 mm × 0.8 mm SOL (Small Outline No-lead) surface-mount package. The PCB land pattern occupies approximately 2.7 mm × 2.4 mm including solder pads, which is roughly 25% smaller than a standard SOT-23-5 footprint. This compact size allows the thermal switch to be placed immediately adjacent to the battery connector or charge IC on a wearable or IoT PCB without consuming significant board area.
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Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1000+ | $0.5524 | $552.40 |
| 10000+ | $0.4925 | $4925.00 |
| 100000+ | $0.4126 | $41260.00 |
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