LM236M-2.5 Rectifier Signal Schottky diode precision 2.5V shunt regulator diodes

LM136-2.5/LM236-2.5/LM336-2.5V

Reference Diode

General Description

The LM136-2.5/LM236-2.5 and LM336-2.5 integrated circuits are precision 2.5V shunt regulator diodes. These monolithic IC voltage references operate as a low-temperature-coefficient 2.5V zener with 0.2Ω dynamic impedance. A third terminal on the LM136-2.5 allows the reference voltage and temperature coefficient to be trimmed easily.

The LM136-2.5 series is useful as a precision 2.5V low voltage reference for digital voltmeters, power supplies or op amp circuitry. The 2.5V make it convenient to obtain a stable reference from 5V logic supplies. Further, since the LM136-2.5 operates as a shunt regulator, it can be used as either a positive or negative voltage reference.

The LM136-2.5 is rated for operation over −55˚C to +125˚C while the LM236-2.5 is rated over a −25˚C to +85˚C temperature range.

The LM336-2.5 is rated for operation over a 0˚C to +70˚C temperature range. See the connection diagrams for available packages.

Features

• Low temperature coefficient

• Wide operating current of 400 µA to 10 mA

• 0.2Ω dynamic impedance

• ±1% initial tolerance available

• Guaranteed temperature stability

• Easily trimmed for minimum temperature drift

• Fast turn-on

• Three lead transistor package

Connection Diagrams

Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.

Reverse Current                                                                  15 mA

Forward Current                                                                  10 mA

Storage Temperature                                            −60˚C to +150˚C

Operating Temperature Range (Note 2)

    LM136                                                               −55˚C to +150˚C

    LM236                                                                 −25˚C to +85˚C

    LM336                                                                     0˚C to +70˚C

Soldering Information

    TO-92 Package (10 sec.)                                                   260˚C

    TO-46 Package (10 sec.)                                                   300˚C

    SO Package

        Vapor Phase (60 sec.)                                                    215˚C

        Infrared (15 sec.)                                                            220˚C

See AN-450 “Surface Mounting Methods and Their Effect on Product Reliability” (Appendix D) for other methods of soldering surface mount devices.

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