LM336Z-2.5 - Linear Technology

LM136-2.5/LM336-2.5

APPLICATIO S

FEATURES

DESCRIPTIO

TYPICAL APPLICATIO

■

Reference for 5V Systems

■

8-Bit A/D and D/A Reference

■

Digital Voltmeters

■

Current Loop Measurement and Control Systems

■

Power Supply Monitor

■

Guaranteed

Temperature Stability

■

Maximum 0.6Ω Dynamic Impedance

■

Adjustable for Minimum Temperature Coefficient

■

Wide Operating Current Range

2.5V Reference

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 perfor-

mance 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.

, LTC and LT are registered trademarks of Linear Technology Corporation.

136/336 TA01a

5V TO 35V

3.6k

10k*

TRIM

LM336-2.5

OUTPUT

*DOES NOT AFFECT

TEMPERATURE

COEFFICIENT

REVERSE CURRENT (mA)

3.5

3.0

2.5

2.0

1.5

1.0

0.5

136/336 TA01b

24 810

REVERSE VOLTAGE CHANGE (mV)

= 25°C

2.5V Reference Reverse Voltage Change

LM136-2.5/LM336-2.5

LM136/LM136A LM336/LM336B

SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS

Reverse Breakdown Voltage T

= 25°C, I

= 1mA

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

∆V

Reverse Breakdown Change 400µA ≤ I

≤ 10mA

∆I

with Current T

= 25°C 2.6 6 2.6 10 mV

MIN

≤ T

MAX

●3.0 10 3.0 12 mV

Reverse Dynamic Impedance I

= 1mA

=25°C 0.2 0.6 0.2 1.0 Ω

MIN

≤ T

MAX

●0.4 1.0 0.4 1.4 Ω

∆V

Temperature Stability V

Adjusted to 2.490V, I

= 1mA,

∆Temp T

MIN

≤ T

MAX

(See Figure 1) ●12 18 1.8 6 mV

∆V

Long Term Stability T

= 25°C ± 0.1°C, I

= 1mA 20 20 ppm/kHr

∆Time

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

ORDER PART

NUMBER

JMAX

= 150°C, θ

= 160°C/W

LM136H-2.5

LM136AH-2.5

LM336H-2.5

LM336AH-2.5

ABSOLUTE AXI U RATI GS

PACKAGE/ORDER I FOR ATIO

UUW

(Note 1)

ELECTRICAL CHARACTERISTICS

The ● denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. (Note 2)

Consult LTC Marketing for parts specified with wider operating temperature ranges.

ORDER PART

NUMBER

LM336Z-2.5

LM336BZ-2.5

BOTTOM VIEW

Z PACKAGE

3-LEAD PLASTIC TO-92

ADJ

+–

BOTTOM VIEW

H PACKAGE

3-LEAD TO-46 METAL CAN

–

ADJ

Lead Temperature (Soldering, 10 sec).................. 300°C

Reverse Current.................................................... 15mA

Forward Current ................................................... 10mA

OBSOLETE PACKAGE

Consider the Z Packages for Alternate Source

(NOTE 2)

JMAX

= 150°C, θ

= 440°C/W

(NOTE 2)

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.

136/336 F01

1mA

2.490V

*ADJUST TO 2.490

†

ANY SILICON

SIGNAL DIODE

†

*D1, D2 1N4148

Figure 1. Adjusting the LM336 for

Minimum Temperature Coefficient

LM136-2.5/LM336-2.5

TYPICAL PERFOR A CE CHARACTERISTICS

Reverse Characteristics Forward Characteristics Temperature Drift

Dynamic Impedance Zener Noise Voltage Response Time

SCHE ATIC DIAGRA

136/336 SD

30pF

20pF

Q3 Q5

Q4 Q6

Q12 Q14

Q13

10k

30k

2k 1.1k

6.6k

500Ω

6.6k24k

24k

50k

Q18

Q15

Q11Q10

Q16

Q17

ADJ

–

REVERSE VOLTAGE (V)

0.6

REVERSE CURRENT (A)

2.2

136/336 • G01

1.0 1.4 1.8 2.6

10–1

10–2

10–3

10–4

10–5

Tj = 125°C

Tj = –55°C

Tj = 25°C

FORWARD CURRENT (mA)

0.001

FORWARD VOLTAGE (V)

1.2

1.0

0.8

0.6

0.4

0.2

00.01 0.1 1 10

136/336 G02

Tj = 25°C

TEMPERATURE (°C)

–55

REVERSE VOLTAGE (V)

2.59

2.57

2.55

2.53

2.51

2.49

2.47

2.45

2.43

2.41

2.39

2.37 85 105

136/336 G03

–35 255–15 45 65 125

IR = 1mA

FREQUENCY (Hz)

10 100 1k 10k 100k

DYNAMIC IMPEDANCE (Ω)

100

0.1

136/336 G04

= 1mA

–55°C ≤ T

≤ 125°C

FREQUENCY (Hz)

NOISE (nV/√Hz)

10k 100k

136/336 G05

100 1k

250

200

150

100

IR = 1mA

Tj = 25°C

TIME (µs)

VOLTAGE SWING (V)

3.5

3.0

2.5

2.0

1.5

1.0

0.5

0120

136/336 G06

OUTPUT

INPUT

5.1k

OUTPUT

INPUT

Information furnished by Linear Technology Corporation is believed to be accurate and reliable.

However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-

tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.

LM136-2.5/LM336-2.5

Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

(408) 432-1900

●

FAX: (408) 434-0507

●

www.linear.com

 LINEAR TECHNOLOGY CO RPOR ATION 1986

136336fa LT/CP 0801 1.5K REV A • PRINTED IN USA

RELATED PARTS

PACKAGE DESCRIPTIO

PART NUMBER DESCRIPTION COMMENTS

LT1009 Precision 2.5V Shunt Reference 0.2% Max Initial Tolerance

0.016 – 0.021**

(0.406 – 0.533)

DIA

0.025

(0.635)

MAX

0.085 – 0.105

(2.159 – 2.667)

0.500

(12.700)

MIN

0.178 – 0.195

(4.521 – 4.953)

0.209 – 0.219

(5.309 – 5.537)

0.100

(2.540)

TYP

45°

H02/03(TO-46) 1098

0.050

(1.270)

TYP

0.050

(1.270)

TYP

0.028 – 0.048

(0.711 – 1.219)

0.036 – 0.046

(0.914 – 1.168)

FOR 3-LEAD PACKAGE ONLY

REFERENCE

PLANE *

LEAD DIAMETER IS UNCONTROLLED BETWEEN THE REFERENCE PLANE

AND 0.045" BELOW THE REFERENCE PLANE

FOR SOLDER DIP LEAD FINISH, LEAD DIAMETER IS 0.016 – 0.024

(0.406 – 0.610)

PIN 1

H Package

2-Lead and 3-Lead TO-46 Metal Can

(Reference LTC DWG # 05-08-1340)

Z Package

3-Lead Plastic TO-92 (Similar to TO-226)

(Reference LTC DWG # 05-08-1410)

TYPICAL APPLICATIO S

OBSOLETE PACKAGE

500Ω

–5V

10k

9.76k

*LM336-2.5

2N3904

2N3906

OUT

136/336 TA04

–

1N4148

10k

*LM336Z-2.5

OP-07CH

1µF

20µF

10k

100k

2.5V

≥ 6V

136/336 TA05

Switchable ±1.25V

Bipolar Reference Low Noise 2.5V Buffered Reference

0.050

(1.27)

BSC

0.060 ± 0.005

(1.524± 0.127)

DIA

0.90

(2.286)

NOM

0.180 ± 0.005

(4.572 ± 0.127)

0.180 ± 0.005

(4.572 ± 0.127)

0.500

(12.70)

MIN

0.050

(1.270)

MAX

UNCONTROLLED

LEAD DIMENSION

0.016 ± 0.003

(0.406 ± 0.076)

5°

NOM

0.015 ± 0.002

(0.381 ± 0.051)

0.060 ± 0.010

(1.524 ± 0.254)

10° NOM

0.140 ± 0.010

(3.556 ± 0.127)

Z3 (TO-92) 0401

0.098 +016/–0.04

(2.5 +0.4/–0.1)

2 PLCS

TO-92 TAPE AND REEL

REFER TO TAPE AND REEL SECTION OF

LTC DATA BOOK FOR ADDITIONAL INFORMATION

3.6V TO 40V

62Ω

LM336-2.5

LM334

–

136/336 TA02

Wide Supply

Range, Reference Low Temperature

Coefficient Power Regulator

LT317A

1.2k

LM336

ADJ

IN OUT V

OUT

1N4148

R2*

10k

375Ω

ADJUST R2

FOR 3.75V

ACROSS R1

136/336 TA03