Current Regulator Diode
CA500 Series / SST500 Series
FEATURES
••Simpl e Tw o Lead Cu rrent So ur ces
••1 to 10 0 Vol t Operatio n
••Zero T emperature Coefficient
••Sim plifi es Float ing Cur ren t Sour ces
••No P owe r Supplies Required
GENERAL DESCRIPTI ON
Calogic’s cur rent regulator diode is avai lable 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 r anges from 0.24mA to 4.7mA, all in 20% bands. Th e
devices allow the designer a cost effective method of
providing a current regulator with no power supply
requirements and lo wer part count . The lo w er cur ren t de vice s
operate at 1 volt.
ORDERING INFORMATION
P art N o. P a c k a g e P art N o. P a c k a g e I F (mA)
CA500 TO-92 SST500 SOT-23 0.24
CA501 TO-92 SST501 SOT-23 0.33
CA502 TO-92 SST502 SOT-23 0.43
CA503 TO-92 SST503 SOT-23 0.56
CA504 TO-92 SST504 SOT-23 0.75
CA505 TO-92 SST505 SOT-23 1.00
CA506 TO-92 SST506 SOT-23 1.40
CA507 TO-92 SST507 SOT-23 1.80
CA508 TO-92 SST508 SOT-23 2.40
CA509 TO-92 SST509 SOT-23 3.00
CA510 TO-92 SST510 SOT-23 3.60
CA511 TO-92 SST511 SOT-23 4.70
CORPORATION
PIN CONFI G U RAT ION
TO-92
12
BOTTOM VIEW
1 ANODE
2 CATHODE
SOT-23
1
2
3
TOP VIEW
1 ANODE
2 CATHODE
PR ODU CT MARKIN G (SOT-23)
SST500 500
SST501 501
SST502 502
SST503 503
SST504 504
SST505 505
SST506 506
SST507 507
SST508 508
SST509 509
SST510 510
SST511 511
5010
External ly connect
pi n 1 to pin2.
3 ANODE
2 CATHODE
CORPORATION
ABSOLUTE M AXIMUM R ATI NG S (TA = 25 oC un less other wise not ed)
PARAMETERS/TEST CONDITIONS SYMBOL LIMIT UNITS
P eak Operating Voltage POV 50 V
Forward Current IF20 mA
Reverse Current IR50
Power Dissipation PD360 mW
Power Derating 3.27 mW/oC
Operating Junction Temperature TJ-55 to 150 oC
Stor age Temperature Tstg -55 to 200
ELECTRICAL CHAr A CTERI STIC S (TA = 25oC unle ss otherwise not ed )
SYMBOL IFZdZkVLPOV CFθ1
PARAMETER REGULATOR
CURRENT DYNAMIC
IMPEDANCE KNEE
IMPEDANCE LIMITING
VOLTAGE
PEAK
OPERATING
VOLTAGE CAPACITANCE TEMPERATURE
COEFFICIENT
(TYPICALS)
TEST
CONDITIONS VF = 25V
(Note 1) VF = 25V
(No te 2) VF = 6V IF = 0.8 IF(MIN)
(Note 3) IF = 1.1 IF (MAX)
(Note 4) VF = 25V
f = 1MHz VF = 25V
0oC ≤ TA ≤ 100oC
UNITS mA MΩMΩVVpFppm/
oC
NOM MIN MAX MIN TYP TYP MAX TYP MIN TYP TYP TYP
500
501
502
503
504
505
506
507
508
509
510
511
0.24
0.33
0.43
0.56
0.75
1.00
1.40
1.80
2.40
3.00
3.60
4.70
0.192
0.264
0.344
0.448
0.600
0.800
1.120
1.440
1.900
2.400
2.900
3.800
0.288
0.396
0.516
0.672
0.900
1.200
1.680
2.160
2.900
3.600
4.300
5.600
4.00
2.20
1.50
1.20
0.80
0.50
0.33
0.20
0.20
0.15
0.15
0.12
40.0
25.0
15.0
12.0
7.0
5.0
3.0
2.0
1.5
1.0
0.8
0.6
2.50
1.60
1.10
0.80
0.55
0.40
0.25
0.19
0.13
0.09
0.07
0.05
1.20
1.30
1.50
1.70
1.90
2.10
2.50
2.80
3.10
3.50
3.90
4.20
0.4
0.5
0.6
0.7
0.8
0.9
1.1
1.3
1.5
1.7
1.9
2.1
50
50
50
50
50
50
50
50
50
50
50
50
100
100
100
100
100
100
100
100
100
100
100
100
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
1300
600
0
-400
-1000
-1300
-1900
-2200
-2600
-2800
-3000
-3000
Notes: 1. Pulse test - steady state currents may vary .
2. Pulse test - steady state impedances may vary.
3. Min VF required to insure IF > 0.8 IF(MIN).
4. Max VF where IF > 1.1 IF(MAX) is guaranteed.
CA500 Series / SST500 Series
