TL431SA3 Datasheet, PDF (2/6 Pages) Cystech Electonics Corp. – Adjustable Precision Shunt Regulators

CYStech Electronics Corp.
Spec. No. : C502A3
Issued Date : 2011.05.24
Revised Date : 2012.04.12
Page No. : 2/6
Functional Block Diagram & Symbol
Functional Block Diagram :
Cathode
Reference
+
-
VREF
Anode
Symbol :
Cathode
Reference
Anode
Test Circuits
II
II
IN
VZ
IN
VZ
IN
VZ
IREF
IZ
VREF
R1 _IREF
IZ
R2 ^VREF
Fig1. Test Circuit for VZ=VREF
Fig 2. Test Circuit for VZ>VREF
Fig3. Test Circuit for Off-State
Note : VZ=VREF(1+R1/R2)+IREFxR1
Current
Electrical Characteristics ( Ta=25°C unless otherwise specified )
Characteristics
Reference Input Voltage A-rank
B-rank
C-rank
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
Symbol Test Conditions
V_REF V_KA=V_REF, I_K=10mA
V_REF(dev)
V_KA=V_REF, I_K=10mA
T_min≤T_a≤T_max
I_K=10mA,
ΔV_REF / ΔV_KA=10V-V_REF
ΔV_KA I_K=10mA,
ΔK_KA=36V-10V
I_REF
I_K=10mA, R₁=10kΩ,
R₂=∞
Min
2.480
2.470
2.445
-
-
-
-
I_REF(dev)
I_K=10mA, R₁=10kΩ,
R₂=∞, T_a=Full Range
-
I_K(min) V_KA=V_REF
-
I_K(off) V_KA=36V, V_REF=0
-
Z_KA
V_KA=V_REF, f≤1.0KHz
I_K=1 to 100mA
-
Typ Max
2.495 2.510
2.495 2.520
2.495 2.545
4 17
-1.4 -2.7
-1.0 -2.0
0.15 1
0.4 1.2
0.05 0.2
0.1 1.0
0.2 0.5
Unit
V
mV
mV/V
mV/V
μA
μA
mA
μA
Ω
TL431SA3
CYStek Product Specification