Linear Technology LM336AH-2.5, LM336BZ-2.5, LM136AH-2.5, LM336H-2.5, LM336Z-2.5 Datasheet
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FEATURES
■
Guaranteed
■
Maximum 0.6Ω Dynamic Impedance
■
Adjustable for Minimum Temperature Coefficient
■
Wide Operating Current Range
Temperature Stability
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APPLICATIO S
■
Reference for 5V Systems
■
8-Bit A/D and D/A Reference
■
Digital Voltmeters
■
Current Loop Measurement and Control Systems
■
Power Supply Monitor
, LTC and LT are registered trademarks of Linear Technology Corporation.
LM136-2.5/LM336-2.5
2.5V Reference
U
DESCRIPTIO
The LM136-2.5 is a general purpose shunt regulator diode
designed to operate over a wide current range while
maintaining good stability with time and temperature. The
third terminal allows either the temperature coefficient to
be minimized or the reference voltage to be adjusted
without changing the temperature coefficient. Because it
operates as a shunt regulator it can be used equally well as
a positive or negative reference.
The LM136-2.5 is available with initial tolerances as low as
1% in either a TO-46 metal can for hermetic requirements
or a low cost TO-92 plastic package.
Linear’s advanced design, test and process techniques
have optimized the LM136-2.5 to achieve superior performance and reliability over previous designs. For more
demanding precision reference applications requiring very
low initial tolerance and temperature coefficients, consult
the LT1009 data sheet. A typical 2.5V reference with trim
is shown below.
TYPICAL APPLICATIO
2.5V Reference
5V TO 35V
3.6k
LM336-2.5
*DOES NOT AFFECT
U
OUTPUT
10k*
TRIM
TEMPERATURE
COEFFICIENT
136/336 TA01a
Reverse Voltage Change
3.5
TA = 25°C
3.0
2.5
2.0
1.5
1.0
REVERSE VOLTAGE CHANGE (mV)
0.5
0
24 810
0
REVERSE CURRENT (mA)
6
136/336 TA01b
1
LM136-2.5/LM336-2.5
WW
W
ABSOLUTE AXI U RATI GS
U
(Note 1)
Operating Temperature Range
LM136-2.5 (OBSOLETE) .............. –55°C to 125°C
LM336-2.5 .............................................. 0°C to 70°C
Storage Temperature Range ................. –65°C to 150°C
UUW
PACKAGE/ORDER I FOR ATIO
BOTTOM VIEW
+
ADJ
–
H PACKAGE
3-LEAD TO-46 METAL CAN
T
= 150°C, θJA = 440°C/W
JMAX
(NOTE 2)
OBSOLETE PACKAGE
Consider the Z Packages for Alternate Source
ORDER PART
NUMBER
LM136H-2.5
LM136AH-2.5
LM336H-2.5
LM336AH-2.5
Lead Temperature (Soldering, 10 sec).................. 300°C
Reverse Current.................................................... 15mA
Forward Current ................................................... 10mA
BOTTOM VIEW
+
ADJ
–
ORDER PART
NUMBER
LM336Z-2.5
LM336BZ-2.5
Z PACKAGE
3-LEAD PLASTIC TO-92
T
= 150°C, θJA = 160°C/W
JMAX
(NOTE 2)
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 2)
LM136/LM136A LM336/LM336B
SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
V
∆V
∆I
r
∆V
∆Temp T
∆V
∆Time
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LT1009 is an improved, low cost, pin for pin replacement for
the “A” and “B” versions. For further information consult the LT1009 data
sheet.
Reverse Breakdown Voltage TA = 25°C, IR = 1mA
Z
Reverse Breakdown Change 400µA ≤ IR ≤ 10mA
Z
with Current TA = 25°C 2.6 6 2.6 10 mV
R
Reverse Dynamic Impedance IR = 1mA
Z
Temperature Stability VR Adjusted to 2.490V, IR = 1mA,
Z
Long Term Stability TA = 25°C ± 0.1°C, IR = 1mA 20 20 ppm/kHr
Z
LM136/LM336 2.440 2.490 2.540 2.390 2.490 2.590 V
LM136A/LM336B 2.465 2.490 2.515 2.440 2.490 2.540 V
T
≤ TA ≤ T
MIN
T
=25°C 0.2 0.6 0.2 1.0 Ω
A
≤ TA ≤ T
T
MIN
≤ TA ≤ T
MIN
MAX
MAX
(See Figure 1) ● 12 18 1.8 6 mV
MAX
● 3.0 10 3.0 12 mV
● 0.4 1.0 0.4 1.4 Ω
+
V
R
1mA
*
2.490V
†
D1
D1, D2 1N4148
* ADJUST TO 2.490
5k
†
ANY SILICON
SIGNAL DIODE
†
D2
136/336 F01
2
Figure 1. Adjusting the LM336 for
Minimum Temperature Coefficient
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