Fairchild Semiconductor LM336Z2.5 Datasheet

LM336-2.5/LM336B-2.5

Programmable Shunt Regulator

www.fairchildsemi.com

Features

• Low Temperature Coefficient

• Guaranteed Temperature Stability 4mV Typical

•0.2Ω

ynamic Impedan c e

D

• ±1.0% Initial Tolerance Available

• Easily Trimmed for Minimum Temperature Drift

Internal Block Diagram

Description

The LM336-2.5/LM336B-2.5 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. A third terminal on
the LM336-2.5/LM336B-2.5 allows the reference voltage
and temperature coefficient to be trimmed easily. LM336-

2.5/LM336B-2.5 are useful as a precision 2.5V low voltage
reference for digital voltmeters, power s upplies or OP-AMP
circuitry. The 2.5V makes it convenient to obtain a stable
reference from low voltage supplies. Further, since the
LM336-2.5/LM336B-2.5 operate as shunt regulators, they
can be used as either a positive or negative voltage reference.

TO-92

1

1. Adj 2. + 3. -

Q8

Q7

C2

R4

Q2

Q1

Q3

©2002 Fairchild Semiconductor Corporation

Q5

Q4

C1

Q6

Q10

Q12

R1

Q9

Q11

Q13

R2

Q14

R3

Q15

R5

Q16

R6

Q17

Q18

R7

R8

R9

R10

2

1

3

+

ADJUST

_

Rev. 1.0.1

LM336-2.5/LM336B-2.5

Absolute Maximum Ratings

Parameter Symbol Value Unit

Reverse Current I
Forward Current I
Operating Temperature Range LM336-2.5/LM336B-2.5 T
Storage Temperature Range T

R

F
OPR
STG

15 mA
10 mA

0 ~ +70 °C

- 60 ~ +150 °C

Electrical Characteristics

(0°C < TA < +70°C, unless otherwise specified

)

Parameter Symbol Conditions

Reverse Breakdown
Voltage

Reverse Breakdown
Change with Current

Reverse Dynamic
Impedance

∆V

V

R

Z

Temperature Stability ST
Reverse Breakdown

Change with Current
Reverse Dynamic

Impedance
Long Term Stability

In Reference Voltage

∆V

R

Z

ST I

TA = +25°C

R

I

= 1mA

R

TA = +25°C

/∆I

R

400uA ≤ I
TA = +25°C

D

I

= 1mA

R

IR = 1mA - 1.8 6 - 1.8 6 mV

T

/∆IR400uA ≤ I

IR = 1mA - 0.4 1.4 - 0.4 1.0 Ω

D

= 1mA - 20 - - 20 - ppm/Khr

R

≤ 10mA

R

≤ 10mA-312- 310 mV

R

LM336-2.5 LM336B-2.5

Min. Typ. Max. Min. Typ. Max.

Unit

2.44 2.49 2.54 2.465 2.49 2.515 V

- 2.6 10 - 2.6 6 mV

- 0.2 1 - 0.2 0.6 Ω

2