TelCom Semiconductor Inc LM385BCZB-2.5, LM385BCZB-1.2, LM385BCOA-2.5, LM385BCOA-1.2, LM385CZB-2.5, LM385CZB-1.2, LM385COA-2.5, LM385COA-1.2, LM285EZB-2.5, LM285EZB-1.2, LM285EOA-2.5, LM285EOA-1.2, LM285BEZB-2.5, LM285BEZB-1.2, LM285BEOA-2.5, LM285BEOA-1.2 Datasheet

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TelCom Semiconductor Inc LM385BCZB-2.5, LM385BCZB-1.2, LM385BCOA-2.5, LM385BCOA-1.2, LM385CZB-2.5, LM385CZB-1.2, LM385COA-2.5, LM385COA-1.2, LM285EZB-2.5, LM285EZB-1.2, LM285EOA-2.5, LM285EOA-1.2, LM285BEZB-2.5, LM285BEZB-1.2, LM285BEOA-2.5, LM285BEOA-1.2 Datasheet

LM285/285B-1.2V

LM285/285B-2.5V

LM385/385B-1.2V

LM385/385B-2.5V

LOW POWER, BANDGAP VOLTAGE REFERENCES

FEATURES

Output Tolerance .......................................

1% or 2%

Output Voltage Option

LM285/385-1.2V ........................................

1.235V

LM285/385-2.5V ............................................

2.5V

Wide Operating Current Range

 

LM285/385-1.2V ...........................

15μA to 20mA

 

LM285/385-2.5V ...........................

20μA to 20mA

Temperature Coefficient ..........................

30ppm/°C

Dynamic Impedance ..........................................

0.6Ω

TO-92-3 Plastic Package

8-Pin Plastic Narrow Body (SOIC) Package

GENERAL DESCRIPTION

The LM285/385-1.2V (1.235V output) and LM285/385- 2.5V (2.5V output) are bipolar, two-terminal, bandgap voltage references that offer precision performance without premium price. These devices do not require thin-film resistors, greatly lowering manufacturing complexity and cost.

A 30ppm/°C output temperature coefficient and a 15μA to 20mA operating current range make these voltage references especially attractive for multimeter, data acquisition and telecommunications applications.

PIN CONFIGURATIONS

1

2

3

APPLICATIONS

ADC and DAC Reference

Current Source Generation

Threshold Detectors

Power Supplies

Multi-meters

ORDERING INFORMATION

TO-92-3 PLASTIC (BOTTOM VIEW)

3 2 1

SURFACE MOUNT 8-PIN PLASTIC SOIC

NC

1

8

CATHODE

NC

2

7

NC

NC

3

6

NC

ANODE

4

5

NC

LM285/285B EZB-1.2

LM285/285B E0A-1.2

LM285/285B EZB-2.5

LM285/285B EOA-2.5

LM385/385B CZB-1.2

LM385/385B COA-1.2

LM385/385B CZB-2.5

LM385/385B COA-2.5

NC = NO INTERNAL CONNECTION

 

 

Temperature

 

 

Part No.

Package

Range

Voltage

Tolerance

 

 

 

 

 

LM285BEOA-1.2

8-Pin SOIC

– 40°C to +85°C

1.2

1%

 

 

 

 

 

LM285BEOA-2.5

8-Pin SOIC

– 40°C to +85°C

2.5

1.5%

 

 

 

 

 

LM285BEZB-1.2

TO-92-3

– 40°C to +85°C

1.2

1%

 

 

 

 

 

LM285BEZB-2.5

TO-92-3

– 40°C to +85°C

2.5

1.5%

LM285EOA-1.2

8-Pin SOIC

– 40°C to +85°C

1.2

2%

LM285EOA-2.5

8-Pin SOIC

– 40°C to +85°C

2.5

3%

 

 

 

 

 

LM285EZB-1.2

TO-92-3

– 40°C to +85°C

1.2

2%

 

 

 

 

 

LM285EZB-2.5

TO-92-3

– 40°C to +85°C

2.5

3%

 

 

 

 

 

LM385BCOA-1.2

8-Pin SOIC

0°C to +70°C

1.2

1%

 

 

 

 

 

LM385BCOA-2.5

8-Pin SOIC

0°C to +70°C

2.5

1.5%

 

 

 

 

 

LM385BCZB-1.2

TO-92-3

0°C to +70°C

1.2

1%

 

 

 

 

 

LM385BCZB-2.5

TO-92-3

0°C to +70°C

2.5

1.5%

LM385COA-1.2

8-Pin SOIC

0°C to +70°C

1.2

2%

LM385COA-2.5

8-Pin SOIC

0°C to +70°C

2.5

3%

 

 

 

 

 

LM385CZB-1.2

TO-92-3

0°C to +70°C

1.2

2%

 

 

 

 

 

LM385CZB-2.5

TO-92-3

0°C to +70°C

2.5

3%

 

 

 

 

 

 

 

 

 

LM285/B/385/B-9 11/6/96

TELCOM SEMICONDUCTOR, INC.

 

 

3-9

4

5

6

7

8

LOW POWER, BANDGAP LM285/285B-1.2V VOLTAGE REFERENCES LM285/285B-2.5V

LM385/385B-1.2V

LM385/385B-2.5V

ABSOLUTE MAXIMUM RATINGS*

Forward Current ....................................................

+10mA

Reverse Current ....................................................

+30mA

Storage Temperature Range ................

– 65°C to +150°C

Operating Temperature Range

– 40°C to +85°C

TO-92 Package ................................

Surface Mount Package ...................

– 40°C to +85°C

Lead Temperature (Soldering, 10 sec)

+300°C

TO-92 Package ..............................................

Surface Mount Package .................................

+300°C

Power Dissipation

Limited by Forward/Reverse Current

*Functional operation above the absolute maximum stress ratings is not implied.

ELECTRICAL CHARACTERISTICS: TA = +25°C, unless otherwise specified.

 

 

 

 

 

LM285 / LM285B–1.2

LM385 / LM385B–1.2

 

 

Symbol

Parameter

Test Conditions

Min

Typ

Max

Min

Typ

Max

Unit

 

 

 

 

 

 

 

 

 

 

 

 

 

V(BR)R

 

Reverse Breakdown Voltage

IR 20mA

 

 

 

 

 

 

V

 

 

 

LM285B-1.2/LM385B-1.2

 

1.223

1.235

1.247

1.223

1.235

1.247

 

 

 

 

TA = Tlow to Thigh (Note 1)

 

1.200

1.270

1.210

1.260

 

 

 

 

LM285-1.2V/LM385-1.2V

 

1.205

1.235

1.260

1.205

1.235

1.260

 

 

 

 

TA = Tlow to Thigh (Note 1)

 

1.192

1.273

1.192

1.273

 

 

IRMIN

 

Minimum Operating Current

 

 

 

 

 

 

 

μA

 

 

 

TA = +25°C

 

8.0

15

8.0

15

 

 

 

 

TA = Tlow to Thigh (Note 1)

 

20

20

 

 

V(BR)R

 

Reverse Breakdown Voltage

 

 

 

 

 

 

 

mV

 

 

 

Change with Current

 

 

 

 

 

 

 

 

 

 

 

IRmin = IR = 1.0mA, TA = +25°C

 

1.0

1.0

 

 

 

 

TA = Tlow to Thigh (Note 1)

 

1.5

1.5

 

 

 

 

1.0mA = IR = 20mA, TA = +25°C

 

10

20

 

 

 

 

TA = Tlow to Thigh (Note 1)

 

20

25

 

 

Z

 

Reverse Dynamic Impedance

IR = 100μA

0.6

0.6

Ω

 

V(BR)/

T

Average Temperature Coefficient

10μA IR 20mA

30

100

30

100

ppm/°C

 

S

 

Long Term Stability

IR = 100μA,

20

20

ppm/kHR

 

 

 

 

TA = +25°C ±0.1°C

 

 

 

 

 

 

 

 

Symbol

Parameter

Test Conditions

LM285 / LM285B–2.5

LM385 / LM385B–2.5

Unit

 

Min

Typ

Max

Min

Typ

Max

 

 

 

 

 

 

 

 

 

 

 

 

 

V(BR)R

 

Reverse Breakdown Voltage

IR = 20mA

 

 

 

 

 

 

V

 

 

 

LM285B-2.5/LM385B-2.5

 

2.462

2.5

2.538

2.462

2.5

2.538

 

 

 

 

TA = Tlow to Thigh (Note 1)

 

2.415

2.585

2.436

2.564

 

 

 

 

LM285-2.5V/LM385-2.5V

 

2.425

2.5

2.575

2.425

2.5

2.575

 

 

 

 

TA = Tlow to Thigh (Note 1)

 

2.400

2.600

2.400

2.600

 

 

IRMIN

 

Minimum Operating Current

 

 

 

 

 

 

 

μA

 

 

 

TA = +25°C

 

13

20

13

20

 

 

 

 

TA = Tlow to Thigh (Note 1)

 

30

30

 

 

V(BR)R

 

Reverse Breakdown Voltage

 

 

 

 

 

 

 

mV

 

 

 

Change with Current

 

 

 

 

 

 

 

 

 

 

 

IRmin = IR = 1.0mA, TA = +25°C

 

1.0

2.0

 

 

 

 

TA = Tlow to Thigh (Note 1)

 

1.5

2.5

 

 

 

 

1.0mA = IR = 20mA, TA = +25°C

 

10

20

 

 

 

 

TA = Tlow to Thigh (Note 1)

 

20

25

 

 

Z

 

Reverse Dynamic Impedance

IR = 100μA

0.6

0.6

Ω

 

V(BR)/

T

Average Temperature Coefficient

20μA IR 20mA

30

100

30

100

ppm/°C

 

S

 

Long Term Stability

IR = 100μA,

20

20

ppm/kHR

 

 

 

 

TA = +25°C ±0.1°C

 

 

 

 

 

 

 

 

Note: 1.

Tlow = – 40°C for LM285-1.2, LM285-2.5, LM285B-1.2, LM285B-2.5

 

 

 

 

 

 

 

 

 

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

 

 

 

 

 

 

 

 

 

Thigh = +85°C for LM285-1.2, LM285-2.5, LM285B-1.2, LM285B-2.5

 

 

 

 

 

 

 

3-10

+70°C for LM385-1.2, LM385B-1.2, LM385-2.5, LM385B-2.5

 

 

TELCOM SEMICONDUCTOR, INC.

 

 

 

 

 

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