tl431xa3 Cystech Electonics Corp., tl431xa3 Datasheet - Page 2

• Manufacturer Part Number: tl431xa3
• Description: Adjustable Precision Shunt Regulators
• Manufacturer: Cystech Electonics Corp.

Functional Block Diagram
Test Circuits
Electrical Characteristics
Functional Block Diagram :
Reference Input Voltage
Deviation of Reference Input Voltage
Over-Temperature
Ratio of Change in Reference Input
Voltage to the Change in Cathode
Voltage
Reference Input Current
Deviation of Reference Input Current
Over Full Temperature Range
Minimum Cathode Current for
Regulation
Off-State Cathode Current
Dynamic impedance
TL431A3
Fig1. Test Circuit for V
Reference
IN
I
REF
V
REF
I
I
V
Characteristics
REF
Cathode
Z
+
=V
-
I
REF
Z
Anode
V
TL431A
TL431B
TL431C
Z
CYStech Electronics Corp.
( Ta=25 C unless otherwise specified )
Fig 2. Test Circuit for V
Note : V
& Symbol
IN
V
Symbol
I
R1
R2
REF(dev)
Z
REF(dev)
I
V
V
I
K(min)
=V
I
Z
K(off)
REF
V
REF
I
REF
KA
I
KA
REF
I
REF
V
/
(1+R
REF
V
V
T
I
I
I
R
I
R
V
V
V
I
K
K
K
K
K
min
V
K
KA
KA
KA
KA
KA
=10mA,
=10mA,
=10mA, R
2
=10mA, R
2
=1 to 100mA
Test Conditions
=
= , T
1
KA
KA
/R
=V
=V
=V
=36V, V
=V
Z
=10V-V
=36V-10V
T
>V
2
Symbol :
)+I
REF
REF
REF
REF
a
I
Z
REF
a
REF
T
=Full Range
V
, I
, I
, f 1.0KHz
max
Z
K
K
xR
REF
1
1
=10mA
=10mA
REF
=10k ,
=10k ,
1
=0
Fig3. Test Circuit for Off-State
IN
Current
2.445 2.495 2.545
2.470 2.495 2.520
2.480 2.495 2.510
Min
-
-
-
-
-
-
-
-
Cathode
Anode
CYStek Product Specification
Spec. No. : C502A3
Issued Date : 2003.03.26
Revised Date : 2005.06.29
Page No. : 2/6
-1.4
-1.0
Typ
0.4
0.4
0.1
0.2
4
2
Reference
Max Unit
-2.7
-2.0
1.2
1.0
1.0
0.5
17
4
V
Z
mV
mV
mA
µA
µA
µA
V
V