LM285Z-2.5G - ON Semiconductor L.L.C.

© Semiconductor Components Industries, LLC, 2008

March, 2008 - Rev. 8

1Publication Order Number:

LM285/D

LM285, LM385B

Micropower Voltage

Reference Diodes

The LM285/LM385 series are micropower two-terminal bandgap

voltage regulator diodes. Designed to operate over a wide current

range of 10 mA to 20 mA, these devices feature exceptionally low

dynamic impedance, low noise and stable operation over time and

temperature. Tight voltage tolerances are achieved by on-chip

trimming. The large dynamic operating range enables these devices to

be used in applications with widely varying supplies with excellent

regulation. Extremely low operating current make these devices ideal

for micropower circuitry like portable instrumentation, regulators and

other analog circuitry where extended battery life is required.

The LM285/LM385 series are packaged in a low cost TO-226

plastic case and are available in two voltage versions of 1.235 V and

2.500 V as denoted by the device suffix (see Ordering Information

table). The LM285 is specified over a -40°C to +85°C temperature

range while the LM385 is rated from 0°C to +70°C.

The LM385 is also available in a surface mount plastic package in

voltages of 1.235 V and 2.500 V.

Features

•Operating Current from 10 mA to 20 mA

•1.0%, 1.5%, 2.0% and 3.0% Initial Tolerance Grades

•Low Temperature Coefficient

•1.0 W Dynamic Impedance

•Surface Mount Package Available

•Pb-Free Packages are Available

Figure 1. Representative Schematic Diagram

Open

for 1.235 V

10 k

Cathode

Anode

100 k

500 W

600 k

425 k

74.3 k

8.45 k

600 k

360 k

Open

for 2.5 V

LM385-1.2

1.235 V

3.3 k

1.5 V

Battery

Standard Application

SOIC-8

D SUFFIX

CASE 751

http://onsemi.com

(Bottom View)

312

Cathode

N.C.

Anode

N.C.

N.C.

Cathode

Anode

TO-92

(TO-226)

Z SUFFIX

CASE 29

See detailed ordering and shipping information in the package

dimensions section on page 6 of this data sheet.

ORDERING INFORMATION

MARKING

DIAGRAMS

xxx = 1.2 or 2.5

y = 2 or 3

z = 1 or 2

A = Assembly Location

L = Wafer Lot

Y = Year

W, WW = Work Week

G= Pb-Free Package

LMy85

Z-xxx

ALYWWG

(Note: Microdot may be in either location)

y85-z

ALYW

LM285, LM385B

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MAXIMUM RATINGS (TA = 25°C, unless otherwise noted)

Rating Symbol Value Unit

Reverse Current IR30 mA

Forward Current IF10 mA

Operating Ambient Temperature Range

LM285

LM385

TA-40 to +85

0 to +70

°C

Operating Junction Temperature TJ+150 °C

Storage Temperature Range Tstg -65 to + 150 °C

Electrostatic Discharge Sensitivity (ESD)

Human Body Model (HBM)

Machine Model (MM)

Charged Device Model (CDM)

ESD

4000

400

2000

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the

Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect

device reliability.

ELECTRICAL CHARACTERISTICS (TA = 25°C, unless otherwise noted)

Characteristic Symbol

LM285-1.2 LM385-1.2/LM385B-1.2

Unit

Min Typ Max Min Typ Max

Reverse Breakdown Voltage (IRmin v IR v 20 mA)

LM285-1.2/LM385B-1.2

TA = Tlow to Thigh (Note 1)

LM385-1.2

TA = Tlow to Thigh (Note 1)

V(BR)R

1.223

1.200

1.235

1.247

1.270

1.223

1.210

1.205

1.192

1.235

1.247

1.260

1.273

Minimum Operating Current

TA = 25°C

TA = Tlow to Thigh (Note 1)

IRmin

8.0

20 -

8.0

Reverse Breakdown Voltage Change with Current

IRmin v IR v 1.0 mA, TA = +25°C

TA = Tlow to Thigh (Note 1)

1.0 mA v IR v 20 mA, TA = +25°C

TA = Tlow to Thigh (Note 1)

DV(BR)R

1.0

1.5

1.0

1.5

Reverse Dynamic Impedance

IR = 100 mA, TA = +25°C

- 0.6 - - 0.6 -

Average Temperature Coefficient

10 mA v IR v 20 mA, TA = Tlow to Thigh (Note 1)

DV(BR)/DT

- 80 - - 80 -

ppm/°C

Wideband Noise (RMS)

IR = 100 mA, 10 Hz v f v 10 kHz

- 60 - - 60 -

Long Term Stability

IR = 100 mA, TA = +25°C ± 0.1°C

- 20 - - 20 -

ppm/kHR

Reverse Breakdown Voltage (IRmin v IR v 20 mA)

LM285-2.5/LM385B-2.5

TA = Tlow to Thigh (Note 1)

LM385-2.5

TA = Tlow to Thigh (Note 1)

V(BR)R

2.462

2.415

2.5

2.538

2.585

2.462

2.436

2.425

2.400

2.5

2.538

2.564

2.575

2.600

Minimum Operating Current

TA = 25°C

TA = Tlow to Thigh (Note 1)

IRmin -

1. Tlow = -40°C for LM285-1.2, LM285-2.5

Thigh =+85°C for LM285-1.2, LM285-2.5

Tlow = 0°C for LM385-1.2, LM385B-1.2, LM385-2.5, LM385B-2.5

Thigh =+70°C for LM385-1.2, LM385B-1.2, LM385-2.5, LM385B-2.5

LM285, LM385B

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ELECTRICAL CHARACTERISTICS (TA = 25°C, unless otherwise noted)

Characteristic Symbol

LM285-1.2 LM385-1.2/LM385B-1.2

Unit

Min Typ Max Min Typ Max

Reverse Breakdown Voltage Change with Current

IRmin v IR v 1.0 mA, TA = +25°C

TA = Tlow to Thigh (Note 2)

1.0 mA v IR v 20 mA, TA = +25°C

TA = Tlow to Thigh (Note 2)

DV(BR)R

1.0

1.5

2.0

2.5

Reverse Dynamic Impedance

IR = 100 mA, TA = +25°C

- 0.6 - - 0.6 -

Average Temperature Coefficient

20 mA v IR v 20 mA, TA = Tlow to Thigh (Note 2)

DV(BR)/DT

- 80 - - 80 -

ppm/°C

Wideband Noise (RMS)

IR = 100 mA, 10 Hz v f v 10 kHz

- 120 - - 120 -

Long Term Stability

IR = 100 mA, TA = +25°C ± 0.1°C

- 20 - - 20 -

ppm/kHR

2. Tlow = -40°C for LM285-1.2, LM285-2.5

Thigh =+85°C for LM285-1.2, LM285-2.5

Tlow = 0°C for LM385-1.2, LM385B-1.2, LM385-2.5, LM385B-2.5

Thigh =+70°C for LM385-1.2, LM385B-1.2, LM385-2.5, LM385B-2.5

LM285, LM385B

http://onsemi.com

1.1

t, TIME (ms)

0 1.00.90.80.70.60.30.20.1

1.25

1.50

0.75

0.50

5.0

0.25

1.00

OUTPUT (V)INPUT (V)

Input

DUT

Output

100 k

√

100

875

1.0K 100k10K10

125

250

375

750

625

500

f, FREQUENCY (Hz)

en, NOISE (nV/ Hz)

125

TA, AMBIENT TEMPERATURE (°C)

1.210

1.220

1.230

1.240

1.250

1007550025-25-50

V(BR)R, REVERSE VOLTAGE (V)

100.01 1001.00.1

1.2

1.0

0.8

0.6

0.4

0.2

IF, FORWARD CURRENT (mA)

VF, FORWARD VOLTAGE (V)

TYPICAL PERFORMANCE CURVES FOR LM285-1.2/385-1.2/385B-1.2

0.2 0.4 0.6 0.8 1.0 1.2

1.4

100

1.0

0.1 0

V(BR), REVERSE VOLTAGE (V)

, REVERSE CURRENT (A)μIR

0.1 1.0 10 1000.01

8.0

6.0

4.0

2.0

-2.0

IR, REVERSE CURRENT (mA)

V(BR)R, REVERSE VOLTAGE CHANGE (mV)Δ

TA = +85°C

+25°C-40°C

TA = +85°C

+25°C

-40°C

TA = -40°C

+25°C

+85°C

IR = 100 mA

Figure 2. Reverse Characteristics Figure 3. Reverse Characteristics

Figure 4. Forward Characteristics Figure 5. Temperature Drift

Figure 6. Noise Voltage Figure 7. Response Time

LM285, LM385B

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V(BR), REVERSE VOLTAGE (V)

1.1

t, TIME (ms)

0 1.00.90.80.70.60.30.20.1

2.50

3.00

1.50

1.00

5.0

0.50

2.00

OUTPUT (V)INPUT (V)

Input

DUT

Output

100 k

√

100 1.0K 100k10K10

250

500

750

1500

1250

1000

f, FREQUENCY (Hz)

en, NOISE (nV/ Hz)

125

TA, AMBIENT TEMPERATURE (°C)

2.450

2.470

2.490

2.510

2.520

1007550025-25-50

V(BR)R, REVERSE VOLTAGE (V)

100.01 1001.00.1

1.2

1.0

0.8

0.6

0.4

0.2

IF, FORWARD CURRENT (mA)

VF, FORWARD VOLTAGE (V)

TYPICAL PERFORMANCE CURVES FOR LM285-2.5/385-2.5/385B-2.5

0.5 1.0 1.5 2.0 2.5 3.0

3.5

100

1.0

0.1 0

Figure 8. Reverse Characteristics

, REVERSE CURRENT (A)μIR

Figure 9. Reverse Characteristics

0.1 1.0 10 1000.01

8.0

6.0

4.0

2.0

-2.0

IR, REVERSE CURRENT (mA)

V(BR)R, REVERSE VOLTAGE CHANGE (mV)Δ

TA = +85°C

+25°C

-40°C

TA = +85°C

+25°C-40°C

Figure 10. Forward Characteristics

TA = -40°C

+25°C

+85°C

Figure 11. Temperature Drift

IR = 100 mA

Figure 12. Noise Voltage Figure 13. Response Time

2.460

2.480

2.500

LM285, LM385B

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ORDERING INFORMATION

Device Operating Temperature Range

Reverse Break-Down

Voltage Package Shipping†

LM285D-1.2

TA = -40°C to +85°C

1.235 V

SOIC-8 98 Units / Rail

LM285D-1.2G SOIC-8

(Pb-Free)

98 Units / Rail

LM285D-1.2R2 SOIC-8 2500 / Tape & Reel

LM285D-1.2R2G SOIC-8

(Pb-Free)

2500 / Tape & Reel

LM285D-2.5

2.500 V

SOIC-8 98 Units / Rail

LM285D-2.5G SOIC-8

(Pb-Free)

98 Units / Rail

LM285D-2.5R2 SOIC-8 2500 / Tape & Reel

LM285D-2.5R2G SOIC-8

(Pb-Free)

2500 / Tape & Reel

LM285Z-1.2

1.235 V

TO-92 2000 Units / Bag

LM285Z-1.2G TO-92

(Pb-Free)

2000 Units / Bag

LM285Z-2.5

2.500 V

TO-92 2000 Units / Bag

LM285Z-2.5G TO-92

(Pb-Free)

2000 Units / Bag

LM285Z-1.2RA

1.235 V

TO-92 2000 / Tape & Reel

LM285Z-1.2RAG TO-92

(Pb-Free)

2000 / Tape & Reel

LM285Z-2.5RA

2.500 V

TO-92 2000 / Tape & Reel

LM285Z-2.5RAG TO-92

(Pb-Free)

2000 / Tape & Reel

LM285Z-2.5RP TO-92 2000 Units / Fan-Fold

LM285Z-2.5RPG TO-92

(Pb-Free)

2000 Units / Fan-Fold

LM385BD-1.2

TA = 0°C to +70°C

1.235 V

SOIC-8 98 Units / Rail

LM385BD-1.2G SOIC-8

(Pb-Free)

98 Units / Rail

LM385BD-1.2R2 SOIC-8 2500 / Tape & Reel

LM385BD-1.2R2G SOIC-8

(Pb-Free)

2500 / Tape & Reel

LM385BD-2.5

2.500 V

SOIC-8 98 Units / Rail

LM385BD-2.5G SOIC-8

(Pb-Free)

98 Units / Rail

LM385BD-2.5R2 SOIC-8 2500 / Tape & Reel

LM385BD-2.5R2G SOIC-8

(Pb-Free)

2500 / Tape & Reel

LM385BZ-1.2

1.235 V

TO-92 2000 Units / Bag

LM385BZ-1.2G TO-92

(Pb-Free)

2000 Units / Bag

LM385BZ-1.2RA TO-92 2000 / Tape & Reel

LM385BZ-1.2RAG TO-92

(Pb-Free)

2000 / Tape & Reel

†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging

Specifications Brochure, BRD8011/D.

LM285, LM385B

http://onsemi.com

ORDERING INFORMATION

Device Shipping†

Package

Reverse Break-Down

VoltageOperating Temperature Range

LM385BZ-2.5

TA = 0°C to +70°C

2.500 V

TO-92 2000 Units / Bag

LM385BZ-2.5G TO-92

(Pb-Free)

2000 Units / Bag

LM385BZ-2.5RA TO-92 2000 / Tape & Reel

LM385BZ-2.5RAG TO-92

(Pb-Free)

2000 / Tape & Reel

LM385D-1.2

1.235 V

SOIC-8 98 Units / Rail

LM385D-1.2G SOIC-8

(Pb-Free)

98 Units / Rail

LM385D-1.2R2 SOIC-8 2500 / Tape & Reel

LM385D-1.2R2G SOIC-8

(Pb-Free)

2500 / Tape & Reel

LM385D-2.5

2.500 V

SOIC-8 98 Units / Rail

LM385D-2.5G SOIC-8

(Pb-Free)

98 Units / Rail

LM385D-2.5R2 SOIC-8 2500 / Tape & Reel

LM385D-2.5R2G SOIC-8

(Pb-Free)

2500 / Tape & Reel

LM385Z-1.2

1.235 V

TO-92 2000 Units / Bag

LM385Z-1.2G TO-92

(Pb-Free)

2000 Units / Bag

LM385Z-1.2RA TO-92 2000 / Tape & Reel

LM385Z-1.2RAG TO-92

(Pb-Free)

2000 / Tape & Reel

LM385Z-1.2RP TO-92 2000 / Ammo Box

LM385Z-1.2RPG TO-92

(Pb-Free)

2000 / Ammo Box

LM385Z-2.5

2.500 V

TO-92 2000 Units / Bag

LM385Z-2.5G TO-92

(Pb-Free)

2000 Units / Bag

LM385Z-2.5RP TO-92 2000 / Ammo Box

LM385Z-2.5RPG TO-92

(Pb-Free)

2000 / Ammo Box

†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging

Specifications Brochure, BRD8011/D.

LM285, LM385B

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PACKAGE DIMENSIONS

TO-92 (TO-226)

CASE 29-11

ISSUE AM

NOTES:

1. DIMENSIONING AND TOLERANCING PER ANSI

Y14.5M, 1982.

2. CONTROLLING DIMENSION: INCH.

3. CONTOUR OF PACKAGE BEYOND DIMENSION R

IS UNCONTROLLED.

4. LEAD DIMENSION IS UNCONTROLLED IN P AND

BEYOND DIMENSION K MINIMUM.

SECTION X-X

SEATING

PLANE DIM MIN MAX MIN MAX

MILLIMETERSINCHES

A0.175 0.205 4.45 5.20

B0.170 0.210 4.32 5.33

C0.125 0.165 3.18 4.19

D0.016 0.021 0.407 0.533

G0.045 0.055 1.15 1.39

H0.095 0.105 2.42 2.66

J0.015 0.020 0.39 0.50

K0.500 --- 12.70 ---

L0.250 --- 6.35 ---

N0.080 0.105 2.04 2.66

P--- 0.100 --- 2.54

R0.115 --- 2.93 ---

V0.135 --- 3.43 ---

NOTES:

1. DIMENSIONING AND TOLERANCING PER

ASME Y14.5M, 1994.

2. CONTROLLING DIMENSION: MILLIMETERS.

3. CONTOUR OF PACKAGE BEYOND

DIMENSION R IS UNCONTROLLED.

4. LEAD DIMENSION IS UNCONTROLLED IN P

AND BEYOND DIMENSION K MINIMUM.

SECTION X-X

SEATING

PLANE DIM MIN MAX

MILLIMETERS

A4.45 5.20

B4.32 5.33

C3.18 4.19

D0.40 0.54

G2.40 2.80

J0.39 0.50

K12.70 ---

N2.04 2.66

P1.50 4.00

R2.93 ---

V3.43 ---

STRAIGHT LEAD

BULK PACK

BENT LEAD

TAPE & REEL

AMMO PACK

LM285, LM385B

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PACKAGE DIMENSIONS

SOIC-8 NB

CASE 751-07

ISSUE AJ

SEATING

PLANE

X 45 _

NOTES:

1. DIMENSIONING AND TOLERANCING PER

ANSI Y14.5M, 1982.

2. CONTROLLING DIMENSION: MILLIMETER.

3. DIMENSION A AND B DO NOT INCLUDE

MOLD PROTRUSION.

4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)

PER SIDE.

5. DIMENSION D DOES NOT INCLUDE DAMBAR

PROTRUSION. ALLOWABLE DAMBAR

PROTRUSION SHALL BE 0.127 (0.005) TOTAL

IN EXCESS OF THE D DIMENSION AT

MAXIMUM MATERIAL CONDITION.

6. 751-01 THRU 751-06 ARE OBSOLETE. NEW

STANDARD IS 751-07.

0.10 (0.004)

DIM

MIN MAX MIN MAX

INCHES

4.80 5.00 0.189 0.197

MILLIMETERS

B3.80 4.00 0.150 0.157

C1.35 1.75 0.053 0.069

D0.33 0.51 0.013 0.020

G1.27 BSC 0.050 BSC

H0.10 0.25 0.004 0.010

J0.19 0.25 0.007 0.010

K0.40 1.27 0.016 0.050

M0 8 0 8

N0.25 0.50 0.010 0.020

S5.80 6.20 0.228 0.244

-X-

-Y-

0.25 (0.010)

-Z-

0.25 (0.010) ZSXS

____

1.52

0.060

7.0

0.275

0.6

0.024

1.270

0.050

4.0

0.155

ǒmm

inchesǓ

SCALE 6:1

*For additional information on our Pb-Free strategy and soldering

details, please download the ON Semiconductor Soldering and

Mounting Techniques Reference Manual, SOLDERRM/D.

SOLDERING FOOTPRINT*

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to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability

arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.

“Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All

operating parameters, including “Typicals” must be validated for each customer application by customer's technical experts. SCILLC does not convey any license under its patent rights

nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications

intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should

Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates,

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Europe, Middle East and Africa Technical Support:

Phone: 421 33 790 2910

Japan Customer Focus Center

Phone: 81-3-5773-3850

LM285/D

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