View KC02A_301518.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

LM136-5.0/LM236-5.0/LM336-5.0 5.0V Reference Diode
June 1999
LM136-5.0/LM236-5.0/LM336-5.0 5.0V Reference Diode
General Description
The LM136-5.0/LM236-5.0/LM336-5.0 integrated circuits are precision 5.0V shunt regulator diodes. These monolithic IC voltage references operate as a low temperature coefficient 5.0V zener with 0.6 dynamic impedance. A third terminal on the LM136-5.0 allows the reference voltage and temperature coefficient to be trimmed easily. The LM136-5.0 series is useful as a precision 5.0V low voltage reference for digital voltmeters, power supplies or op amp circuitry. The 5.0V makes it convenient to obtain a stable reference from low voltage supplies. Further, since the LM136-5.0 operates as a shunt regulator, it can be used as either a positive or negative voltage reference. The LM136-5.0 is rated for operation over -55C to +125C while the LM236-5.0 is rated over a -25C to +85C temperature range. The LM336-5.0 is rated for operation over a 0C to +70C temperature range. See the connection diagrams for available packages. For applications requiring 2.5V see LM136-2.5.
Features
n n n n n n n n n Adjustable 4V to 6V Low temperature coefficient Wide operating current of 600 A to 10 mA 0.6 dynamic impedance 1% initial tolerance available Guaranteed temperature stability Easily trimmed for minimum temperature drift Fast turn-on Three lead transistor package
Connection Diagrams
TO-92 Plastic Package
DS005716-4
Bottom View Order Number LM236AZ-5.0, LM336Z-5.0 or LM336BZ-5.0 See NS Package Number Z03A TO-46 Metal Can Package
DS005716-5
Bottom View Order Number LM136H-5.0, LM136H-5.0/883, LM236H-5.0, LM136AH-5.0, LM136AH-5.0/883, or LM236AH-5.0 See NS Package Number H03H
(c) 1999 National Semiconductor Corporation
DS005716
www.national.com
Connection Diagrams
(Continued) SO Package
DS005716-7
Order Number LM336M-5.0 or LM336BM-5.0 See NS Package Number M08A
Typical Applications
5.0V Reference 5.0V Reference with Minimum Temperature Coefficient Trimmed 4V to 6V Reference with Temperature Coefficient Independent of Breakdown Voltage
DS005716-1
DS005716-3
* Does not affect temperature coefficient
DS005716-15
Adjust to 5.00V
* Any silicon signal diode
www.national.com
2
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 Forward Current Storage Temperature Operating Temperature Range (Note 2) LM136-5.0 LM236-5.0 15mA 10mA -60C to +150C -55C to +150C -25C to +85C
LM336-5.0 0C to +70C Soldering Information TO-92 Package (10 sec.) 260C TO-46 Package (10 sec.) 300C SO Package Vapor Phase (60 sec.) 215C Infrared (15 sec.) 220C See AN-450 "Surface Mounting Methods and Their Effect on Product Reliability" (appendix D) for other methods of soldering surface mount devices.
Electrical Characteristics
(Note 3) LM136A-5.0/LM236A-5.0 Parameter Reverse Breakdown Voltage Conditions TA = 25C, IR = 1 mA LM136-5.0/LM236-5.0/LM336-5.0 Reverse Breakdown Change With Current Reverse Dynamic Impedance Temperature Stability (Note 4) LM136A-5.0/LM236A-5.0, LM336B-5.0 TA = 25C, 600 AIR10 mA TA = 25C, IR = 1 mA, f = 100 Hz VR Adjusted 5.00V IR = 1 mA, (Figure 2) 0CTA70C (LM336-5.0) -25CTA+85C (LM236-5.0) -55CTA+125C (LM136-5.0) Reverse Breakdown Change With Current Adjustment Range Reverse Dynamic Impedance Long Term Stability Circuit of Figure 1 IR = 1 mA TA = 25C0.1C, IR = 1 mA, t = 1000 hrs 600 AIR10 mA 7 20 6 18 36 17 6 24 4 12 mV mV mV mV V 2.5 ppm 4.9 4.95 5.00 5.00 6 0.6 5.1 5.05 12 1.2 4.8 4.90 5.00 5.00 6 0.6 5.2 5.1 20 2 V V mV LM136-5.0/LM236-5.0 Min Typ Max LM336B-5.0 LM336-5.0 Min Typ Max Units
1
0.8 20 1.6
1
0.8 20
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Electrical specifications do not apply when operating the device beyond its specified operating conditions. Note 2: For elevated temperature operation, Tj max is: LM136 LM236 LM336 150C 125C 100C
Thermal Resistance ja (Junction to Ambient)
TO-92 180C/W (0.4" Leads) 170C/W (0.125" Leads)
TO-46 440C/W
SO-8 165C/W
ja (Junction to Case)
N/A
80C/W
N/A
Note 3: Unless otherwise specified, the LM136-5.0 is specified from -55CTA+125C, the LM236-5.0 from -25CTA+85C and the LM336-5.0 from 0CTA+70C. Note 4: Temperature stability for the LM336 and LM236 family is guaranteed by design. Design limits are guaranteed (but not 100% percent production tested) over the indicated temperature and supply voltage ranges. These limits are not used to calculate outgoing quality levels. Stability is defined as the maximum charge in VREF from 25C to TA(min) or TA(max).
3
www.national.com
Typical Performance Characteristics
Reverse Voltage Change Zener Noise Voltage Dynamic Impedance
DS005716-17
DS005716-18
DS005716-19
Response Time
Reverse Characteristics
DS005716-20
DS005716-21
Temperature Drift
Forward Characteristics
DS005716-22
DS005716-23
Application Hints
The LM136-5.0 series voltage references are much easier to use than ordinary zener diodes. Their low impedance and wide operating current range simplify biasing in almost any circuit. Further, either the breakdown voltage or the temperature coefficient can be adjusted to optimize circuit performance. If minimum temperature coefficient is desired, four diodes can be added in series with the adjustment potentiometer as shown in Figure 2. When the device is adjusted to 5.00V the temperature coefficient is minimized. Almost any silicon signal diode can be used for this purpose such as a 1N914, 1N4148 or a 1N457. For proper temperature compensation the diodes should be in the same thermal environment as the LM136-5.0. It is usually sufficient to mount the diodes near the LM136-5.0 on the printed circuit board. The absolute resistance of the network is not critical and any value from 2k to 20k will work. Because of the wide adjustment range, fixed resistors should be connected in series with the pot to make pot setting less critical.
Figure 1 shows an LM136-5.0 with a 10k potentiometer for adjusting the reverse breakdown voltage. With the addition of R1 the breakdown voltage can be adjusted without affecting the temperature coefficient of the device. The adjustment range is usually sufficient to adjust for both the initial device tolerance and inaccuracies in buffer circuitry.
www.national.com
4
Application Hints
(Continued)
DS005716-9
FIGURE 1. LM136-5.0 with Pot for Adjustment of Breakdown Voltage (Trim Range = 1.0V Typical)
DS005716-10
FIGURE 2. Temperature Coefficient Adjustment (Trim Range = 0.5V Typical)
5
www.national.com
Typical Applications
Precision Power Regulator with Low Temperature Coefficient
DS005716-11
* Adjust for 6.25V across R1
5V Crowbar
DS005716-12
Adjustable Shunt Regulator
DS005716-13
www.national.com
6
Typical Applications
(Continued) Bipolar Output Reference
Linear Ohmmeter
DS005716-25
5.0V Square Wave Calibrator
DS005716-14
Op Amp with Output Clamped
DS005716-26
10V Buffered Reference
DS005716-24
DS005716-27
7
www.national.com
Typical Applications
(Continued) Wide Input Range Reference
Low Noise Buffered Reference
DS005716-29
DS005716-28
www.national.com
8
Schematic Diagram
DS005716-16
9
www.national.com
Physical Dimensions
inches (millimeters) unless otherwise noted
TO-46 Metal Can Package (H) Order Number LM136H-5.0, LM136H-5.0/883, LM236H-5.0, LM136AH-5.0, LM136AH-5.0/883 or LM236AH-5.0 NS Package Number H03H
Small Outline (SO-8) Package Order Number LM336M-5.0 or LM336BM-5.0 NS Package Number M08A
www.national.com
10
LM136-5.0/LM236-5.0/LM336-5.0 5.0V Reference Diode
Physical Dimensions
inches (millimeters) unless otherwise noted (Continued)
Plastic Package (Z) Order Number LM236AZ-5.0, LM336Z-5.0 or LM336BZ-5.0 NS Package Number Z03A
LIFE SUPPORT POLICY NATIONAL'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user.
National Semiconductor Corporation Americas Tel: 1-800-272-9959 Fax: 1-800-737-7018 Email: support@nsc.com www.national.com National Semiconductor Europe Fax: +49 (0) 1 80-530 85 86 Email: europe.support@nsc.com Deutsch Tel: +49 (0) 1 80-530 85 85 English Tel: +49 (0) 1 80-532 78 32 Francais Tel: +49 (0) 1 80-532 93 58 Italiano Tel: +49 (0) 1 80-534 16 80
2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.
National Semiconductor Asia Pacific Customer Response Group Tel: 65-2544466 Fax: 65-2504466 Email: sea.support@nsc.com
National Semiconductor Japan Ltd. Tel: 81-3-5639-7560 Fax: 81-3-5639-7507
National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.

▲Up To Search▲

Price & Availability of KC02A

	To Download KC02A Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .