Fairchild LM336Z25XA Programmable shunt regulator Datasheet

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
LM336Z25 Programmable Shunt Regulator
April 1999
Ordering Code:
Product Number
Package
Packing
TO-92
Tape and Reel
LM336Z25
LM336Z25X
Bulk
LM336Z25XA
© 2005 Fairchild Semiconductor Corporation
Operating Temperature
0qC to +70qC
Ammo
DS400009
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LM336Z25
Internal Block Diagram
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2
LM336Z25
Absolute Maximum Ratings(Note 1)
Parameter
Reverse Current
Forward Current
Symbol
Value
Unit
IR
15
mA
IF
10
mA
Operating Temperature Range LM336Z25
TOPR
0 a +70
qC
Storage Temperature Range
TSTG
60 a +150
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
Conditions
Min
Typ
Max
Unit
2.44
2.49
2.54
V
-
2.6
10
mV
-
0.2
1
:
IR = 1mA
-
1.8
6
mV
400PA d IR d 10mA
-
3
12
mV
TA = +25qC,
IR = 1mA
Reverse Breakdown Change with Current
'VR/'IR
TA = +25qC
400PA d IR d 10mA
Reverse Dynamic Impedance
ZD
TA = +25qC
IR = 1mA
Temperature Stability
Reverse Breakdown Change with Current
STT
'VR/'IR
Reverse Dynamic Impedance
ZD
IR = 1mA
-
0.4
1.4
:
Long Term Stability In Reference Voltage
ST
IR = 1mA
-
20
-
ppm/Khr
3
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LM336Z25
Typical Performance Characteristics
FIGURE 1. Reverse Voltage Change
FIGURE 2. Reverse Characteristics
FIGURE 3. Temperature (qC)
FIGURE 4. Forward Characteristics
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5
LM336Z25
Physical Dimensions inches (millimeters) unless otherwise noted
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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.
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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
Definition
Advance Information
Formative or In Design
This datasheet contains the design specifications for product development. Specifications may change in any manner without notice.
Preliminary
First Production
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.
No Identification Needed
Full Production
This datasheet contains final specifications. Fairchild Semiconductor
reserves the right to make changes at any time without notice in order
to improve design.
Obsolete
Not In Production
This datasheet contains specifications on a product that has been discontinued by Fairchild Semiconductor. The datasheet is printed for reference information only.
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