LM26NV Texas instruments

LM26NV

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LM26NV

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Описание

The LM26NV is a precision, single digital-output, low-power thermostat comprised of an internal reference, DAC, temperature sensor and comparator. Utilizing factory programming, it can be manufactured with different trip points as well as different digital output functionality. The trip point (TOS) can be preset at the factory to any temperature in the range of −55°C to +110°C in 1°C increments. The LM26NV has one digital output (OS/OS/US/US) and one digital input (HYST). The digital output stage can be preset as either open-drain or push-pull. In addition, it can be factory programmed to be active HIGH or LOW. The digital output can be factory programmed to indicate an over temperature shutdown event (OS or OS) or an under temperature shutdown event (US or US). When preset as an overtemperature shutdown (OS), it will go LOW to indicate that the die temperature is over the internally preset TOS and go HIGH when the temperature goes below (TOS–THYST). Similarly, when preprogrammed as an undertemperature shutdown (US) it will go HIGH to indicate that the temperature is below TUS and go LOW when the temperature is above (TUS+THYST). The typical hysteresis, THYST, can be set to 2°C or 10°C and is controlled by the state of the HYST pin. Available parts are detailed in the ordering information. For other part options, contact a Texas Instruments Distributor or Sales Representative for information on minimum order qualification. The LM26NV is currently available in a 5-lead SOT-23 package.

Internal Comparator with Pin Programmable 2°C or 10°C Hysteresis
No External Components Required
Open Drain or Push-Pull Digital Output; Supports CMOS Logic Levels
Internal Temperature Sensor
Internal Voltage Reference and DAC for Trip-Point Setting
Currently Available in 5-Pin SOT-23 Plastic Package
Excellent Power Supply Noise Rejection

Key Specifications

Power Supply Voltage: 2.7V to 5.5 V
Power Supply Current:
- 40µA(max)
- 20µA(typ)
Hysteresis Temperature: 2°C or 10°C(typ)

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Setpoint type	Factory Programmed
Setpoint value (°C)	-55 to 110, 115
Operating temperature range (°C)	-55 to 125
Accuracy over temp range (max) (°C)	3
Output type	Open drain, Push Pull
Supply voltage (min) (V)	2.7
Supply voltage (max) (V)	5.5
Supply current (typ) (µA)	40
Number of comparator channels	1
Features	Built-in hysteresis
Rating	Catalog
Interface type	Switch