LM285

LM385, B

SEMICONDUCTOR

TECHNICAL DATA

MICROPOWER VOLTAGE

REFERENCE DIODES

ORDERING INFORMATION

Order this document by LM285/D

Z SUFFIX

PLASTIC PACKAGE

CASE 29

D SUFFIX

PLASTIC PACKAGE

CASE 751

(SO–8)

(Bottom View)

1

32

8

7

6

5

Cathode

N.C.

N.C.

N.C.

4

3

2

Anode

N.C.

N.C.

1

N.C.

N.C.

Cathode

Anode

–

+

LM385–1.2

1.235 V

3.3 k

1.5 V

Battery

Standard Application

Device

Operating

Temperature

Range

Tolerance

LM285D–1.2

LM285Z–1.2

TA = – 40° to

+85

°C

±1.0%

LM285D–2.5

LM285Z–2.5

LM385BD–1.2

LM385BZ–1.2

LM385D–1.2

LM385Z–1.2

LM385BD–2.5

LM385BZ–2.5

LM385D–2.5

LM385Z–2.5

Reverse

Break–

down

Voltage

1.235 V

±1.5%

2.500 V

TA = 0° to

+70

°C

±1.0%

1.235 V

±2.0%

1.235 V

±1.5%

2.500 V

±3.0%

2.500 V

1

MOTOROLA ANALOG IC DEVICE DATA

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

µA 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–226AA plastic

case and are available in two voltage versions of 1.235 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 and 2.500 V.

Representative Schematic Diagram

Open

for 1.235 V

10 k

Cathode

Anode

100 k

500

Ω

600 k

600 k

425 k

74.3 k

8.45 k

600 k

360 k

Open

for 2.5 V

© Motorola, Inc. 1996

Rev 2