Micropower
Voltage Reference Diode
CLM285-1.2 / CLM385-1.2
FEATURES
Tight Tolerance . . . . . . . . . . . . . . . . . . . . . . . . . 1% - 2%
Operating Current . . . . . . . . . . . . . . . . . . . . 10
A - 20mA
Dynamic Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Low Temperature Coefficient
PRODUCT DESCRIPTION
The CLM285 / 385 - 1.2 are micropower 2 terminal band- gap
voltage regulator diodes. Operating over a wide current range
of 10
A to 20mA with low dynamic impedance and stable
temperature characteristics. Calogic utilizes on-chip trimming to
provide tight voltage tolerances.
The devices are excellent in portable meters, regulators or
general purpose analog circuitry with battery life approaching
shelf life.
ORDERING INFORMATION
Part
Package Max Tempco (ppm) Temp Range
CLM285Y1
SOIC
100
-40
o
C to +85
o
C
CLM385T1
TO-46
100
0
o
C to +70
o
C
CLM385N1
TO-92
100
0
o
C to +70
o
C
CLM385Y1
SOIC
100
0
o
C to +70
o
C
PIN CONFIGURATIONS
CORPORATION
TO-92
TO-92 (N-SUFFIX)
BOTTOM VIEW
1
2
3
8
7
6
5
1
2
3
4
NC
NC
NC
+
NC
NC
-
NC
SO PACKAGE
(Y-SUFFIX)
BOTTOM VIEW
SO-8
1004
ABSOLUTE MAXIMUM RATINGS
Reverse Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30mA
Forward Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10mA
Operating Temperature Range
CLM285-1.2 . . . . . . . . . . . . . . . . . . . . . . . . -40
o
C to +85
o
C
CLM385-1.2 . . . . . . . . . . . . . . . . . . . . . . . . . . 0
o
C to +70
o
C
Storage Temperature . . . . . . . . . . . . . . . . . . -55
o
C to +150
o
C
Soldering Information
TO-92 Package (10 sec.). . . . . . . . . . . . . . . . . . . . . 260
o
C
SO Package: Vapor Phase (60 sec.) . . . . . . . . . . 215
o
C
Infrared (15 sec.) . . . . . . . . . . . . . . 220
o
C
ELECTRICAL CHARACTERISTICS (Note 1)
PARAMETER
CLM285-1.2
CLM385-1.2
UNITS
(LIMITS)
CONDITIONS
TYP
TESTED
LIMIT
(NOTE 2)
DESIGN
LIMIT
(NOTE 3)
TYP
TESTED
LIMIT
(NOTE 2)
DESIGN
LIMIT
(NOTE 3)
Reverse
Breakdown
Voltage
1.235
1.220
1.245
1.235
1.235
1.223
1.247
1.225
1.245
V
MIN
V
MAX
V
MIN
V
MAX
T
A
= 25
o
C, 1
MIN
I
R
I
MAX
CLM285-1.2/CLM385B-1.2
CLM385-1.2
Minimum
Operating Current
8
8
10
8
15
10
A
Reverse
Breakdown
1
1.5
1
1.5
mV
I
MIN
I
R
1mA
Voltage Change
with Current
10
20
10
20
mV
1mA
I
R
20mA
Reverse Dynamic
Impedance
1
1.5
1
1.5
I
R
= 100
A, f = 20Hz
Wideband Noise
(rms)
60
60
V
I
R
= 100
A
10Hz
f
10kHz
Long Term
Stability
20
20
ppm
I
R
= 100
A, T = 1000Hr
T
A
= 25
o
C
.0.1
o
C
Average
Temperature
Coefficient (Note 4)
50
100
50
100
ppm/
o
C
I
R
= 100
A
Note 1: Parameters identified with boldface type apply at temperature extremes and for I
MIN
< I
R
< 20mA, unless otherwise specified. All other
numbers apply at T
A
= T
J
= 25
o
C.
Note 2: Guaranteed and 100% production tested.
Note 3: Guaranteed (but not 100% production tested) over the operating temperature and input current ranges. These limits are not to be used
to calculate outgoing quality levels.
Note 4: The average temperature coefficient is defined as the maximum deviation of reference voltage at all measured temperatures between
the operating T
MAX
and T
MIN
, divided by T
MAX
-T
MIN
. The measured temperatures are -55
o
C, -40
o
C, 0
o
C, 25
o
C, 70
o
C, 85
o
C, 125
o
C.
Note 5: For elevated temperature operation, T
j
max is:
CLM285 125
o
C
CLM385 100
o
C
Thermal Resistance
TO-92
SO-8
ja
(Junction to Ambient)
180
o
C/W (0.4" leads)
170
o
C/W (0.125" leads)
165
o
C/W
jc
(Junction to Case)
N/A
N/A
CLM285-1.2 / CLM385-1.2
CORPORATION
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