US431ALCS UNISEM [UNISEM], US431ALCS Datasheet - Page 3

• Manufacturer Part Number: US431ALCS
• Description: LOW -VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATOR
• Manufacturer: UNISEM [UNISEM]

Pin Descriptions
Pin Descriptions
SOT 23
PIN#
4
3
5
1,2
BLOCK DIAGRAM
BLOCK DIAGRAM
Rev. 1.2
5/11/98
NA
1
3
2
TO 92
PIN#
Ref
2,4,5,7
8
1
3,6
1.24V
8 PIN
SOIC
PIN#
Figure 1 - Simplified block diagram of the US431L
+
PIN SYMBOL
Ref
Cathode
Anode
NC
431blk1-1.0
Pin Description
A resistor divider from this pin to the Cathode pin and
ground sets the output voltage.
The output of the shunt regulator .A minimum of 1uF
capacitor must be connected from this pin to Anode pin
to insure unconditional stability.
Ground pin. This pin must be connected to the lowest
potential in the system & all other pins must be at higher
potential with respect to this pin.
These pins are not connected internally.
Cathode
Anode
US431L/431AL
2-3