SC431 Semtech Corporation, SC431 Datasheet - Page 3

• Manufacturer Part Number: SC431
• Description: ADJUSTABLE SHUNT REGULATOR
• Manufacturer: Semtech Corporation

April 13, 1998
ELECTRICAL CHARACTERISTICS
Unless specified, T
Parameter
Reference Voltage
V
Ratio of Change in
V
Cathode Voltage
Reference Input
Current
I
Off State Cathode
Current
Dynamic Output
Impedance
Minimum Operating
Current
TEST CIRCUITS
RECOMMENDED OPERATING CONDITIONS
Cathode Voltage, V
Cathode Current, I
© 1998 SEMTECH CORP.
REF
REF
REF
Temp Deviation
Temp Deviation
to Change in
Test Circuit 1:
Z
Symbol
I
A
REF(DEV)
Z
I
V
I
V
V
Z (min)
I
Z (off)
= 25°C
V
REF
Z
REF
DEV
r
V
Z
REF
= V
Z
V
Min
0.1
REF
REF
(test circuit 1)
(test circuit 1)
R1 = 10k
I
I
T
Z
Z
V
A
I
= 10mA, V
= 10mA, V
Z
Z
= -40 to +85°C, V
R1 = 10k
= V
= 10mA
I
V
Z
f < 1kHz, V
T
REF
= 100uA to 100mA
A
REF
(test circuit 2)
(test circuit 2)
(test circuit 3)
(test circuit 1)
(test circuit 1)
= -40 to +85°C,
Condition
I
= 0V, V
V
Z
Max
150
R2 =
Z
= 10mA
36
= V
Z
Z
= 10V to V
= 36V to 10V
Z
REF
I
T
R2 =
Z
Z
= V
A
= 36V
= 10mA
ADJUSTABLE SHUNT REGULATOR
= 25°C
I
Z
Z
REF
= V
=10mA
Symbol
REF
mA
REF
V
Test Circuit 2:
2.482 2.495 2.507 2.470 2.495 2.520 2.445 2.495 2.545
V
MIN
Z
SC431 0.5%
> V
REF
TYP
0.04
0.25
-0.5
-1.0
0.5
0.4
652 MITCHELL ROAD NEWBURY PARK CA 91320
8
MAX
-2.7
-2.0
100
1.2
0.5
0.5
17
4
MIN
SC431 1%
TYP
0.04
0.25
-0.5
-1.0
0.5
0.4
8
Off State Current
Test Circuit 3:
MAX
-2.7
-2.0
100
1.2
0.5
0.5
25
4
MIN
SC431 2%
TYP
0.04
0.25
-0.5
-1.0
0.5
0.4
15
MAX
-2.7
-2.0
100
1.2
0.5
0.5
30
4
SC431
UNITS
mV/V
mV
µA
µA
µA
µA
V
3