Micropower
Voltage Reference Diode
CORPORATION
CLM285-2.5 / CLM385-2.5
FEATURES
ORDERING INFORMATION
Part
CLM285Y2
CLM385T2
CLM385N2
CLM385Y2
Package Max Tempco (ppm) Temp Range
SOIC
TO-46
TO-92
SOIC
100
100
100
100
-40
o
C to +85
o
C
0
o
C to +70
o
C
0
o
C to +70
o
C
0
o
C to +70
o
C
•
Operating Current . . . . . . . . . . . . . . . . . . . 20µA - 20mA
•
Dynamic Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . 1Ω
•
Low Voltage Reference . . . . . . . . . . . . . . . . . . . . . . . 2.5V
PRODUCT DESCRIPTION
The CLM285 / 385 - 2.5 are 2 terminal band-gap voltage
regulator diodes. Operating over a 20µA to 20mA current range.
The devices provide good temperature stability and exceptionally
low dynamic impedance. Designed for applications in portable
meters, regulators or general purpose circuitry.
PIN CONFIGURATIONS
SO-8
TO-92
+
8
NC
7
NC
6
NC
5
3
2
1
1
NC
2
NC
3
NC
-
4
TO-92 (N-SUFFIX)
BOTTOM VIEW
SO PACKAGE
(Y-SUFFIX)
BOTTOM VIEW
CLM285-2.5 / CLM385-2.5
CORPORATION
ABSOLUTE MAXIMUM RATINGS (Note 1)
Reverse Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30mA
Forward Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10mA
Operating Temperature Range (Note 3)
CLM185-2.5 . . . . . . . . . . . . . . . . . . . . . . . -55
o
C to +125
o
C
CLM285-2.5 . . . . . . . . . . . . . . . . . . . . . . . . -40
o
C to +85
o
C
CLM385-2.5 . . . . . . . . . . . . . . . . . . . . . . . . . . 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
TO-46 Package (10 sec.). . . . . . . . . . . . . . . . . . . . . 300
o
C
SO Package: Vapor Phase (60 sec.) . . . . . . . . . . 215
o
C
Infrared (15 sec.) . . . . . . . . . . . . . . 220
o
C
ELECTRICAL CHARACTERISTICS
(Continued) (Note 3)
CLM285-2.5
PARAMETER
TYP
TESTED
LIMIT
(NOTE 4)
2.460
2.535
18
1
10
1
120
20
50
100
100
20
1.5
20
DESIGN
LIMIT
(NOTE 5)
CLM385-2.5
TESTED DESIGN
LIMIT
LIMIT
(NOTE 4) (NOTE 5)
2.470
2.530
20
2.0
20
20
1.5
25
UNITS
(LIMITS)
CONDITIONS
Reverse Breakdown
Voltage
Minimum Operating Current
Reverse Breakdown Voltage
Change with Current
Reverse Dynamic Impedance
Wideband Noise (rms)
Long Term
Stability
Average Temperature
Coefficient (Note 6)
2.5
13
V(min)
V(max)
µA(Max)
mV(Max)
mV(Max)
Ω
µV
ppm
ppm/
o
C(Max)
T
A
= 25
o
C,
20µA
≤
I
R
≤
20mA
20µA
≤
I
R
≤
1mA
1mA
≤
I
R
≤
20mA
I
R
= 100µA, f = 20Hz
I
R
= 100µA
10Hz
≤
f
≤
10kHz
I
R
= 100µA, T = 1000Hr,
T
A
= 25
o
C
±.0.1
o
C
I
R
= 100µA
Note 1:
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for
which the device is intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions,
see the Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed.
Note 2:
For elevated temperature operation, T
j
max is:
CLM285 125
o
C
CLM385 100
o
C
Thermal Resistance
θ
ja
(Junction to Ambient)
θ
jc
(Junction to Case)
o
TO-92
180 C/W (0.4" Leads)
170
o
C/W (0.125" Leads)
N/A
SO-8
165
o
C/W
N/A
Note 3:
Parameters identified with
boldface type
apply at temperature extremes. All other numbers apply at T
A
= T
J
= 25
o
C.
Note 4:
Guaranteed and 100% production tested.
Note 5:
Guaranteed, but not 100% production tested. These limits are not used to calculate average outgoing quality levels.
Note 6:
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.
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