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LM26 Product Folder

SOT-23, ±3°C Accurate, Factory Preset Thermostat

Generic P/N 26

Parametric Table

Temperature Min (deg C)	-55
Temperature Max (deg C)	125
Accuracy (+/-) (deg C)	3
Supply Min (Volt)	2.70
Supply Max (Volt)	5.50
Quiescent Current (mA)	.04

Sensor Gain	-10.82 mV/Deg C
VtempOutput Impedance (Ohm)	18
Comparators ()	1
RemoteDiode ThermalSensors ()	-
Reference Output (Volt)	-
Preset Setpoints	Yes

Datasheet

Title	Size in Kbytes	Date	View Online	Download	Receive via Email
LM26 SOT-23, ±3°C Accurate, Factory Preset Thermostat	206 Kbytes	9-May-03	View Online	Download	Receive via Email
LM26 SOT-23, ±3°C Accurate, Factory Preset Thermostat (JAPANESE)	176 Kbytes

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Package Availability, Models, Samples & Pricing

Part Number

Package

Status

Models

Samples &
Electronic
Orders

Budgetary Pricing

Std
Pack
Size

Package
Marking

Type

Pins

MSL/Lead-Free Availability

Lead
Time

Qty

SPICE

IBIS

Qty

$US each

LM26CIM5-NPA

SOT-23

Status

Full production

N/A

1K+

$0.59

reel
of
1000

TNPA
ZXTT

10-12 weeks

LM26CIM5-RPA

SOT-23

Status

Full production

N/A

1K+

$0.59

reel
of
1000

TRPA
ZXTT

10-12 weeks

LM26CIM5-SHA

SOT-23

Status

Full production

N/A

1K+

$0.59

reel
of
1000

TSHA
ZXTT

10-12 weeks

LM26CIM5-SPA

SOT-23

Status

Full production

N/A

1K+

$0.59

reel
of
1000

TSPA
ZXTT

10-12 weeks

LM26CIM5-TPA

SOT-23

Status

Full production

N/A

1K+

$0.59

reel
of
1000

TTPA
ZXTT

10-12 weeks

LM26CIM5-VHA

SOT-23

Status

Full production

N/A

1K+

$0.59

reel
of
1000

TVHA
ZXTT

10-12 weeks

LM26CIM5-VPA

SOT-23

Status

Full production

N/A

1K+

$0.59

reel
of
1000

TVPA
ZXTT

10-12 weeks

LM26CIM5-XHA

SOT-23

Status

Full production

N/A

1K+

$0.59

reel
of
1000

TXHA
ZXTT

10-12 weeks

LM26CIM5-XPA

SOT-23

Status

Full production

N/A

1K+

$0.59

reel
of
1000

TXPA
ZXTT

10-12 weeks

LM26CIM5-YHA

SOT-23

Status

Full production

N/A

1K+

$0.59

reel
of
1000

TYHA
ZXTT

10-12 weeks

LM26CIM5-YPA

SOT-23

Status

Full production

N/A

1K+

$0.59

reel
of
1000

TYPA
ZXTT

10-12 weeks

LM26CIM5-ZHA

SOT-23

Status

Full production

N/A

1K+

$0.59

reel
of
1000

TZHA
ZXTT

10-12 weeks

LM26CIM5X-SPA

SOT-23

Status

Full production

N/A

1K+

$0.59

reel
of
3000

TSPA
ZXTT

10-12 weeks

LM26CIM5X-TPA

SOT-23

Status

Full production

N/A

1K+

$0.59

reel
of
3000

TTPA
ZXTT

10-12 weeks

LM26CIM5X-YPA

SOT-23

Status

Full production

N/A

1K+

$0.59

reel
of
3000

TYPA
ZXTT

10-12 weeks

LM26CIM5X-ZHA

SOT-23

Status

Full production

N/A

1K+

$0.59

reel
of
3000

TZHA
ZXTT

10-12 weeks

The LM26 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 (T_OS) can be preset at the factory to any temperature in the range of -55°C to +110°C in 1°C increments. The LM26 has one digital output (OS/OS#/US/US#), one digital input (HYST) and one analog output (V_TEMP). 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 T_OS and go HIGH when the temperature goes below (T_OS-T_HYST). Similarly, when preprogrammed as an undertemperature shutdown (US) it will go HIGH to indicate that the temperature is below T_US and go LOW when the temperature is above (T_US+T_HYST). The typical hysteresis, T_HYST, can be set to 2°C or 10°C and is controlled by the state of the HYST pin. A V_TEMP analog output provides a voltage that is proportional to temperature and has a -10.82mV/°C output slope.

Available parts are detailed in the ordering information. For other part options, contact a National Semiconductor Distributor or Sales Representative for information on minimum order qualification. The LM26 is currently available in a 5-lead SOT-23 package.

Features

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 with V_TEMP output pin
V_TEMP output allows after-assembly system testing
Internal voltage reference and DAC for trip-point setting
Currently available in 5-pin SOT-23 plastic package
Excellent power supply noise rejection

Key Specification

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

Temperature Trip Point Accuracy

Temperature Range	LM26CIM
-55°C to +110°C	±3°C (max)
+120°C	±4°C (max)

Applications

Microprocessor Thermal Management
Appliances
Portable Battery Powered Systems
Fan Control
Industrial Process Control
HVAC Systems
Remote Temperature Sensing
Electronic System Protection

Reliability Metrics

Part Number	Process	Early Failure Rate - Rejects	Sample Size (EFR)	PPM *	Device Hours	Long Term Failure Rates (FITS)	MTTF
LM26CIM5-NPA	CMOS7	2	14200	141	800000	5	226190940
LM26CIM5-RPA	CMOS7	2	14200	141	800000	5	226190940
LM26CIM5-SHA	CMOS7	2	14200	141	800000	5	226190940
LM26CIM5-SPA	CMOS7	2	14200	141	800000	5	226190940
LM26CIM5-TPA	CMOS7	2	14200	141	800000	5	226190940
LM26CIM5-VHA	CMOS7	2	14200	141	800000	5	226190940
LM26CIM5-VPA	CMOS7	2	14200	141	800000	5	226190940
LM26CIM5-XHA	CMOS7	2	14200	141	800000	5	226190940
LM26CIM5-XPA	CMOS7	2	14200	141	800000	5	226190940
LM26CIM5-YHA	CMOS7	2	14200	141	800000	5	226190940
LM26CIM5-YPA	CMOS7	2	14200	141	800000	5	226190940
LM26CIM5-ZHA	CMOS7	2	14200	141	800000	5	226190940
LM26CIM5X-SPA	CMOS7	2	14200	141	800000	5	226190940
LM26CIM5X-TPA	CMOS7	2	14200	141	800000	5	226190940
LM26CIM5X-YPA	CMOS7	2	14200	141	800000	5	226190940
LM26CIM5X-ZHA	CMOS7	2	14200	141	800000	5	226190940

For more information on Reliablitity Metrics, please click here.

[Information as of 15-Jan-2004]

LM26 Product Folder

Datasheet

Package Availability, Models, Samples & Pricing

General Description

Features

Key Specification

Temperature Trip Point Accuracy

Applications

Reliability Metrics