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| LM336Z25 Programmable Shunt Regulator April 1999 Revised August 2005 LM336Z25 Programmable Shunt Regulator General Description The LM336Z25 integrated circuits are precision 2.5V shunt regulators. The monolithic IC voltage reference operates as a low temperature coefficient 2.5V zener with 0.2W dynamic impedance. The monolithic IC voltage reference operates as a low temperature coefficient 2.5V zener with 0.2W dynamic impedance. A third terminal on the LM336Z25 allows the reference voltage and temperature coefficient to be trimmed easily. LM336Z25 are useful as a precision 2.5V low voltage reference for digital voltmeters, power supplies or OP-AMP circuitry. The 2.5V makes it convenient to obtain a stable reference from low voltage supplies. Further, since the LM336Z25 operate as shunt regulators, they can be used as either a positive or negative voltage reference. Features O Low Temperature Coefficient O Guaranteed Temperature Stability 4mV Typical O 0.2W Dynamic Impedance O 1.0% Initial Tolerance Available O Easily Trimmed for Minimum Temperature Drift Ordering Code: Product Number LM336Z25 LM336Z25X LM336Z25XA TO-92 Package Packing Bulk Tape and Reel Ammo Operating Temperature 0qC to +70qC (c) 2005 Fairchild Semiconductor Corporation DS400009 www.fairchildsemi.com LM336Z25 Internal Block Diagram www.fairchildsemi.com 2 LM336Z25 Absolute Maximum Ratings(Note 1) Parameter Reverse Current Forward Current Operating Temperature Range LM336Z25 Storage Temperature Range Symbol IR IF TOPR TSTG Value 15 10 0 a +70 60 a +150 Unit mA mA qC qC Note 1: The Absolute Maximum Ratings are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum rating. Electrical Characteristics (0qC < TA < +70qC, unless otherwise specified) Parameter Reverse Breakdown Voltage Symbol VR TA = +25qC, IR = 1mA Reverse Breakdown Change with Current 'VR/'IR Conditions Min 2.44 Typ 2.49 Max 2.54 Unit V TA = +25qC 400PA d IR d 10mA - 2.6 10 mV Reverse Dynamic Impedance ZD TA = +25qC IR = 1mA - 0.2 1 : Temperature Stability Reverse Breakdown Change with Current Reverse Dynamic Impedance Long Term Stability In Reference Voltage STT 'VR/'IR IR = 1mA 400PA d IR d 10mA IR = 1mA IR = 1mA - 1.8 3 0.4 20 6 12 1.4 - mV mV : ZD ST ppm/Khr 3 www.fairchildsemi.com LM336Z25 Typical Performance Characteristics FIGURE 1. Reverse Voltage Change FIGURE 2. Reverse Characteristics FIGURE 3. Temperature (qC) FIGURE 4. Forward Characteristics www.fairchildsemi.com 4 LM336Z25 Physical Dimensions inches (millimeters) unless otherwise noted 5 www.fairchildsemi.com LM336Z25 Programmable Shunt Regulator DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. LIFE SUPPORT POLICY FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION As used herein: provided in the labeling, can be reasonably expected to result in significant injury to the user. 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or 2. A critical component is any component of a life support (b) support or sustain life, or (c) whose failure to perform device or system whose failure to perform can be reasonwhen properly used in accordance with instructions for use ably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. PRODUCT STATUS DEFINITIONS Definition of terms Datasheet Identification Product Status Advance Information Preliminary Formative or In Design First Production Definition This datasheet contains the design specifications for product development. Specifications may change in any manner without notice. This datasheet contains preliminary data, and supplementary data will be published at a later date. Fairchild Semiconductor reserves the right to make changes at any time without notice in order to improve design. This datasheet contains final specifications. Fairchild Semiconductor reserves the right to make changes at any time without notice in order to improve design. This datasheet contains specifications on a product that has been discontinued by Fairchild Semiconductor. The datasheet is printed for reference information only. No Identification Needed Full Production Obsolete Not In Production www.fairchildsemi.com 6 |
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