Datasheet LM385Z-2.5, LM385Z-1.2RP, LM385Z-1.2RA, LM385Z-1.2, LM385BD-1.2R2 Datasheet (MOTOROLA)

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 

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)

132

8

7

6
5

Cathode

N.C.

N.C.

N.C.

4

3

2

Anode

N.C.

N.C.

1N.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

 
 

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.

• Operating Current from 10 µA to 20 mA

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

• Low Temperature Coefficient

• 1.0 Ω Dynamic Impedance

• Surface Mount Package Available

Representative Schematic Diagram

Open
for 1.235 V

10 k

Cathode

Anode

100 k500

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

LM285 LM385, B

2

MOTOROLA ANALOG IC DEVICE DATA

MAXIMUM RATINGS

(TA = 25°C, unless otherwise noted)

Rating

Symbol Value Unit

Reverse Current I

R

30 mA

Forward Current I

F

10 mA

Operating Ambient Temperature Range T

A

°C
LM285
LM385

– 40 to + 85

0 to +70

Operating Junction Temperature T

J

+ 150 °C

Storage Temperature Range T

stg

– 65 to + 150 °C

ELECTRICAL CHARACTERISTICS (T

A

= 25°C, unless otherwise noted)

LM285–1.2 LM385–1.2/LM385B–1.2

Characteristic Symbol Min Typ Max Min Typ Max Unit

Reverse Breakdown Voltage (I

Rmin

p IR p 20 mA) V

(BR)R

V

LM285–1.2/LM385B–1.2 1.223 1.235 1.247 1.223 1.235 1.247

TA = T

low

to T

high

(Note 1) 1.200 – 1.270 1.210 – 1.260

LM385–1.2 – – – 1.205 1.235 1.260

TA = T

low

to T

high

(Note 1) – – – 1.192 – 1.273

Minimum Operating Current I

Rmin

µA
TA = 25°C – 8.0 10 – 8.0 15
TA = T

low

to T

high

(Note 1) – – 20 – – 20

Reverse Breakdown Voltage Change with Current ∆V

(BR)R

mV

I

Rmin

p IR p 1.0 mA, TA = +25°C – – 1.0 – – 1.0

TA = T

low

to T

high

(Note 1) – – 1.5 – – 1.5

1.0 mA p IR p 20 mA, TA = +25°C – – 10 – – 20

TA = T

low

to T

high

(Note 1) – – 20 – – 25

Reverse Dynamic Impedance Z 0.6 – – 0.6 – W

IR = 100 µA, TA = +25°C

Average Temperature Coefficient ∆V

(BR)

/∆T – 80 – – 80 – ppm/°C

10 µA p IR p 20 mA, TA = T

low

to T

high

(Note 1)

Wideband Noise (RMS) n – 60 – – 60 – µV

IR = 100 µA, 10 Hz p f p 10 kHz

Long Term Stability S – 20 – – 20 – ppm/

IR = 100 µA, TA = +25°C ± 0.1°C kHR

LM285 LM385, B

3

MOTOROLA ANALOG IC DEVICE DATA

ELECTRICAL CHARACTERISTICS (T

A

= 25°C, unless otherwise noted)

LM285–2.5 LM385–2.5/LM385B–2.5

Characteristic Symbol Min Typ Max Min Typ Max Unit

Reverse Breakdown Voltage (I

Rmin

p IR p 20 mA) V

(BR)R

V

LM285–2.5/LM385B–2.5 2.462 2.5 2.538 2.462 2.5 2.538

TA = T

low

to T

high

(Note 1) 2.415 – 2.585 2.436 – 2.564

LM385–2.5 – – – 2.425 2.5 2.575

TA = T

low

to T

high

(Note 1) – – – 2.400 – 2.600

Minimum Operating Current I

Rmin

µA
TA = 25°C – 13 20 – 13 20
TA = T

low

to T

high

(Note 1) – – 30 – – 30

Reverse Breakdown Voltage Change with Current ∆V

(BR)R

mV

I

Rmin

p IR p 1.0 mA, TA = +25°C – – 1.0 – – 2.0

TA = T

low

to T

high

(Note 1) – – 1.5 – – 2.5

1.0 mA p IR p 20 mA, TA = +25°C – – 10 – – 20

TA = T

low

to T

high

(Note 1) – – 20 – – 25

Reverse Dynamic Impedance Z 0.6 – – 0.6 – W

IR = 100 µA, TA = +25°C

Average Temperature Coefficient ∆V

(BR)

/∆T – 80 – – 80 – ppm/°C

20 µA p IR p 20 mA, TA = T

low

to T

high

(Note 1)

Wideband Noise (RMS) n – 120 – – 120 – µV

IR = 100 µA, 10 Hz p f p 10 kHz

Long Term Stability S – 20 – – 20 – ppm/

IR = 100 µA, TA = +25°C ± 0.1°C kHR

NOTES: 1. T

low

= – 40°C for LM285–1.2, LM285–2.5 T

high

= +85°C for LM285–1.2, LM285–2.5

= 0°C for LM385–1.2, LM385B–1.2, LM385–2.5, LM385B–2.5 T

high

=+70°C for LM385–1.2, LM385B–1.2, LM385–2.5, LM385B–2.5

LM285 LM385, B

4

MOTOROLA ANALOG IC DEVICE DATA

1.1

t, TIME (ms)

0 1.00.90.80.70.60.30.20.1

1.25

1.50

0.75

0.50

0

5.0

0.25

10

0

1.00

OUTPUT (V)INPUT (V)

Input

DUT

Output

100 k

√

100

875

1.0 K 100 k10 K10

0

125

250

375

750
625
500

f, FREQUENCY (Hz)

e

n

, 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
0

IF, FORWARD CURRENT (mA)

V

F

, 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 1.2101.4

100

1.0

0.1

0

V(

BR)

, REVERSE VOLTAGE (V)

Figure 1. Reverse Characteristics

, REVERSE CURRENT ( A)

µ

I

R

Figure 2. Reverse Characteristics

0.1 1.0 10 1000.01

8.0

6.0

4.0

2.0
0

–2.0

10

IR, REVERSE CURRENT (mA)

V

(BR)R

, REVERSE VOLTAGE CHANGE (mV)

∆

TA = +85°C

+25°C

–40°C

TA = +85°C

+25°C

–40°C

Figure 3. Forward Characteristics

TA = –40°C

+25°C

+85°C

Figure 4. Temperature Drift

IR = 100 µA

Figure 5. Noise Voltage Figure 6. Response Time

LM285 LM385, B

5

MOTOROLA ANALOG IC DEVICE DATA

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

0

5.0

0.50

10

0

2.00

OUTPUT (V)INPUT (V)

Input

DUT

Output

100 k

√

100 1.0 K 100 k10 K10

0

250

500

750

1500
1250
1000

f, FREQUENCY (Hz)

e

n

, 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
0

IF, FORWARD CURRENT (mA)

V

F

, 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 3.0103.5

100

1.0

0.1

0

Figure 7. Reverse Characteristics

, REVERSE CURRENT ( A)

µ

I

R

Figure 8. Reverse Characteristics

0.1 1.0 10 1000.01

8.0

6.0

4.0

2.0
0

–2.0

10

IR, REVERSE CURRENT (mA)

V

(BR)R

, REVERSE VOLTAGE CHANGE (mV)

∆

TA = +85°C

+25°C

–40°C

TA = +85°C

+25°C

–40°C

Figure 9. Forward Characteristics

TA = –40°C

+25°C

+85°C

Figure 10. Temperature Drift

IR = 100 µA

Figure 11. Noise Voltage Figure 12. Response Time

2.460

2.480

2.500

LM285 LM385, B

6

MOTOROLA ANALOG IC DEVICE DATA

Z SUFFIX

PLASTIC PACKAGE

CASE 29–04

ISSUE AD

OUTLINE DIMENSIONS

D SUFFIX

PLASTIC PACKAGE

CASE 751–05

(SO–8)

ISSUE N

NOTES:

1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.

2. CONTROLLING DIMENSION: INCH.

3. CONTOUR OF PACKAGE BEYOND DIMENSION R
IS UNCONTROLLED.

4. DIMENSION F APPLIES BETWEEN P AND L.
DIMENSION D AND J APPLY BETWEEN L AND K
MINIMUM. LEAD DIMENSION IS UNCONTROLLED
IN P AND BEYOND DIMENSION K MINIMUM.

R

A

P

J

L

F

B

K

G

H

SECTION X–X

C

V

D

N

N

XX

SEATING
PLANE

DIM MIN MAX MIN MAX

MILLIMETERSINCHES

A 0.175 0.205 4.45 5.20
B 0.170 0.210 4.32 5.33
C 0.125 0.165 3.18 4.19
D 0.016 0.022 0.41 0.55
F 0.016 0.019 0.41 0.48
G 0.045 0.055 1.15 1.39
H 0.095 0.105 2.42 2.66
J 0.015 0.020 0.39 0.50
K 0.500 ––– 12.70 –––
L 0.250 ––– 6.35 –––
N 0.080 0.105 2.04 2.66
P ––– 0.100 ––– 2.54
R 0.115 ––– 2.93 –––
V 0.135 ––– 3.43 –––

1

NOTES:

1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.

2. CONTROLLING DIMENSION: MILLIMETER.

3. DIMENSIONS 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.

SEATING
PLANE

14

58

C

K

4X P

A0.25 (0.010)MTB

SS

0.25 (0.010)MB

M

8X D

R

M

J

X 45

_

_

F

–A–

–B–

–T–

DIM MIN MAX MIN MAX

INCHESMILLIMETERS

A 4.80 5.00 0.189 0.196
B 3.80 4.00 0.150 0.157
C 1.35 1.75 0.054 0.068
D 0.35 0.49 0.014 0.019
F 0.40 1.25 0.016 0.049
G 1.27 BSC 0.050 BSC
J 0.18 0.25 0.007 0.009
K 0.10 0.25 0.004 0.009
M 0 7 0 7
P 5.80 6.20 0.229 0.244
R 0.25 0.50 0.010 0.019

____

G

LM285 LM385, B

7

MOTOROLA ANALOG IC DEVICE DATA

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the suitability of its products for any particular purpose, nor does Motorola 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 consequential or incidental damages. “T ypical” parameters which may be provided in Motorola
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. Motorola does not convey any license under its patent rights nor the rights of
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applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury
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arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that
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LM285/D

*LM285/D*

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