Page No. : 2/2
Functional Block Diagram & Symbol
Functional Block Diagram
Symbol
Cathode
Anode
+
-
Cathode
Reference
Reference
VREF
Anode
Test Circuits
Fig 1. VK=VREF
Fig 2. VK>VREF
Fig 3. Off-State Current
IN
II
II
IN
VK
IN
VK
VK
IREF
R1
IREF
IK
IOFF
IK
VREF
R2
VREF
Note: VK=VREF(1+R1/R2)+IREFxR1
Electrical Characteristics (TA=25oC unless otherwise specified)
Characteristics
Symbol
Test Conditions
Min
Typ
Max
Unit
RL431BN/BA (1.0%)
RL431CN/CA (0.5%)
2.470 2.495 2.520
2.483 2.495 2.507
Reference Input
Voltage (Fig1)
VREF
VK=VREF, IK=10mA
V
VK=VREF, IK=10mA
Tmin≤Ta≤Tmax
IK=10mA,
Deviation of Reference Input Voltage
Over-Temperature (Fig1)
VREF(dev)
-
-
-
-
-
4
17
-2.7
-2.0
4
mV
mV/V
mV/V
uA
-1.4
-1.0
2
ΔVREF
ΔVK
/
ΔVK=10V to VREF
IK=10mA,
Ratio of Change in Reference Input Voltage
to the Change in Cathode Voltage (Fig2)
ΔVK=36V to 10V
IK=10mA, R1=10kΩ,
R2=∞
Reference Input Current (Fig2)
IREF
IK=10mA, R1=10kΩ,
R2=∞, Ta=Full Range
VK=VREF
Deviation of Reference Input Current Over
Full Temperature Range (Fig2)
Minimum Cathode Current for Regulation (Fig1) IK(min)
Off-State Cathode Current (Fig3)
IREF(dev)
0.4
1.2
uA
-
-
0.4
0.1
1.0
1.0
mA
uA
IK(off)
VK=36V, VREF=0
VK=VREF, f≤1kHz
IK=1 to 100mA
Dynamic Output Impedance (Fig1)
ZK
-
0.2
0.5
Ω
DS-RS431L-01 October, 2006
www.Orister.com
ORISTER [ ORISTER CORPORATION ]
