Current Regulator Diode
CORPORATION
CA500 Series / SST500 Series
FEATURES
ORDERING INFORMATION
Part No. Package
CA500
CA501
CA502
CA503
CA504
CA505
CA506
CA507
CA508
CA509
CA510
CA511
TO-92
TO-92
TO-92
TO-92
TO-92
TO-92
TO-92
TO-92
TO-92
TO-92
TO-92
TO-92
Part No.
SST500
SST501
SST502
SST503
SST504
SST505
SST506
SST507
SST508
SST509
SST510
SST511
Package
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
I
F
(mA)
0.24
0.33
0.43
0.56
0.75
1.00
1.40
1.80
2.40
3.00
3.60
4.70
•
Simple Two Lead Current Sources
•
1 to 100 Volt Operation
•
Zero Temperature Coefficient
•
Simplifies Floating Current Sources
•
No Power Supplies Required
GENERAL DESCRIPTION
Calogic’s current regulator diode is available in plastic TO-92
and surface mount SOT-23. The devices are selected for
narrow current ranges and are excellent choices for test
instrumentation and medical applications. With nominal
current ranges from 0.24mA to 4.7mA, all in 20% bands. The
devices allow the designer a cost effective method of
providing a current regulator with no power supply
requirements and lower part count. The lower current devices
operate at 1 volt.
PIN CONFIGURATION
SOT-23
TO-92
PRODUCT MARKING (SOT-23)
TOP VIEW
SST500
SST501
500
501
502
503
504
505
506
507
508
509
510
511
2
1
BOTTOM VIEW
SST502
SST503
SST504
3
SST505
SST506
1
2
1
3
2
2
ANODE
ANODE
CATHODE
CATHODE
SST507
SST508
SST509
1 ANODE
2 CATHODE
Externally connect
pin 1 to pin2.
SST510
SST511
5010
CA500 Series / SST500 Series
CORPORATION
ABSOLUTE MAXIMUM RATINGS
(T
A
= 25
o
C unless otherwise noted)
PARAMETERS/TEST CONDITIONS
Peak Operating Voltage
Forward Current
Reverse Current
Power Dissipation
Power Derating
Operating Junction Temperature
Storage Temperature
T
J
T
stg
SYMBOL
P
OV
I
F
I
R
P
D
LIMIT
50
20
mA
50
360
3.27
-55 to 150
-55 to 200
mW
mW/
o
C
o
UNITS
V
C
ELECTRICAL CHArACTERISTICS
(T
A
= 25
o
C unless otherwise noted)
SYMBOL
PARAMETER
TEST
CONDITIONS
UNITS
NOM
500
501
502
503
504
505
506
507
508
509
510
511
Notes: 1.
2.
3.
4.
0.24
0.33
0.43
0.56
0.75
1.00
1.40
1.80
2.40
3.00
3.60
4.70
MIN
0.192
0.264
0.344
0.448
0.600
0.800
1.120
1.440
1.900
2.400
2.900
3.800
MAX
0.288
0.396
0.516
0.672
0.900
1.200
1.680
2.160
2.900
3.600
4.300
5.600
I
F
REGULATOR
CURRENT
V
F
= 25V
(Note 1)
mA
Z
d
DYNAMIC
IMPEDANCE
V
F
= 25V
(Note 2)
MΩ
MIN
4.00
2.20
1.50
1.20
0.80
0.50
0.33
0.20
0.20
0.15
0.15
0.12
TYP
40.0
25.0
15.0
12.0
7.0
5.0
3.0
2.0
1.5
1.0
0.8
0.6
Z
k
KNEE
IMPEDANCE
V
F
= 6V
MΩ
TYP
2.50
1.60
1.10
0.80
0.55
0.40
0.25
0.19
0.13
0.09
0.07
0.05
MAX
1.20
1.30
1.50
1.70
1.90
2.10
2.50
2.80
3.10
3.50
3.90
4.20
V
L
LIMITING
VOLTAGE
I
F
= 0.8 I
F(MIN)
(Note 3)
V
TYP
0.4
0.5
0.6
0.7
0.8
0.9
1.1
1.3
1.5
1.7
1.9
2.1
MIN
50
50
50
50
50
50
50
50
50
50
50
50
P
OV
PEAK
OPERATING
VOLTAGE
I
F
= 1.1 I
F (MAX)
(Note 4)
V
TYP
100
100
100
100
100
100
100
100
100
100
100
100
C
F
CAPACITANCE
V
F
= 25V
f = 1MHz
pF
TYP
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
θ
1
TEMPERATURE
COEFFICIENT
(TYPICALS)
V
F
= 25V
0
o
C
≤
T
A
≤
100
o
C
ppm/
o
C
TYP
1300
600
0
-400
-1000
-1300
-1900
-2200
-2600
-2800
-3000
-3000
Pulse test - steady state currents may vary.
Pulse test - steady state impedances may vary.
Min V
F
required to insure I
F
> 0.8 I
F(MIN)
.
Max V
F
where I
F
> 1.1 I
F(MAX)
is guaranteed.
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