Build with LMT87 — Datasheet Specs & AI Design Help

00 — Overview

What the LMT87 does

The LMT87 is a precision CMOS temperature sensor featuring a linear analog output inversely proportional to temperature. It operates across a wide range of –50°C to 150°C with a typical accuracy of ±0.4°C and a maximum of ±2.7°C. The device supports a 2.7V to 5.5V single supply, draws only 5.4µA of static current, and offers a 0.7ms turn-on time. Available in TO-92, TO-92S, and SOT-23 packages, it serves as a cost-effective alternative to thermistors. Engineers typically use it in automotive systems, infotainment, powertrain applications, and battery-powered devices like drones and smoke detectors where low power and fast thermal response are critical.

Next step

Start building with LMT87 → Every number above is cited straight from the datasheet — ask what they mean for your design, and the assistant answers from the same source documents.

01 — Key specifications

Datasheet parameters

Datasheet parameters for LMT87
Parameter	Min	Typ	Max	Conditions	Source
quiescent current	—	5.4 µA	8.1 µA	TA = 30°C to 150°C, (VDD- VOUT) ≥ 100 mV; is; 7.6 Electrical Characteristics	TI datasheet, p. 6 — 7.6 Electrical Characteristics
output current (abs max)	-7 mA	—	7 mA	7.1 Absolute Maximum Ratings	TI datasheet, p. 5 — 7.1 Absolute Maximum Ratings
supply voltage range	2.7 V	—	5.5 V	(vdd)	TI datasheet, p. 5 — 7.3 Recommended Operating Conditions
operating temperature	-50 °C	—	150 °C		TI datasheet, p. 5 — 7.3 Recommended Operating Conditions
standby current	—	5.4 µA	—	Supply current (IS), TA = 30 to 150 °C, (VDD - VOUT) ≥ 100 mV, typical	TI datasheet, p. 6 — 7.6 Electrical Characteristics
load capacitance	—	1.1 nF	—	cl; 7.6 Electrical Characteristics	TI datasheet, p. 6 — 7.6 Electrical Characteristics

02 — Alternatives

Closest matches to LMT87

LMT87DCKR similar load capacitance, similar operating temperature, similar quiescent current

MCP9700 1.2× lower operating temperature, 1.1× higher standby current, 1.1× lower load capacitance

TMP102 1.4× higher quiescent current, 1.2× lower supply voltage range, 1.2× lower operating temperature

DS18B20 7.2× lower standby current, 1.4× lower operating temperature, similar supply voltage range

MAX31820 7.2× lower standby current, 1.4× lower operating temperature, 1.2× lower supply voltage range

MAX31820MCR+ 7.2× lower standby current, 1.4× lower operating temperature, 1.2× lower supply voltage range

MAX31865 1.2× lower supply voltage range, 1.2× lower operating temperature

TC1047 6.5× higher quiescent current, 1.2× lower operating temperature, 1.2× lower supply voltage range

03 — FAQ

Frequently asked questions

What is the load capacitance specified in section 7.6 Electrical Characteristics?

The load capacitance is 1.1 nF at cl.

What is the maximum operating temperature of the LMT87?

The maximum operating temperature is 150 °C.

What is the absolute maximum output current for the LMT87?

The absolute maximum output current is 7 mA.

What is the quiescent current of the LMT87 when TA = 30°C to 150°C and (VDD- VOUT) ≥ 100 mV?

The quiescent current is 5.4 µA.

What is the typical standby current (IS) when TA = 30 to 150 °C and (VDD - VOUT) ≥ 100 mV?

The typical standby current is 5.4 µA.

What is the supply voltage range (VDD) for the LMT87?

The supply voltage range (VDD) is 5.5 V.