AT431

Color : Black
Indicator Style : Line
Material : Phenolic Resin
Design : Rotary Knob
Shaft Size : 24 mm
Diameter : 30 mm


Features:

Low-Voltage Operation: Down to 1.24V
1% Reference-Voltage Tolerance
Adjustable Output Voltage, Vo=Vref to 12V
Low Operational Cathode Current..50A
0.25Ω Typical Output Impedance
SOT-23-3 , SOT-23-5 and TO-92 Packages


Application

Linear Regulators
Voltage Reference for Power Circuit


Pinout




Specifications

Parameter	Symbol	Limits	Unit
Cathode voltage	VKA	12	V
Continuous cathode current range	IK	-20~20	mA
Reference Current	IREF	-0.05~3	mA
Operating temperature	TOPR	-30~+85
Storage temperature	TSTG	-55~+150
Package thermal impedance JA	SOT-23-5 SOT-23-3	347	/ W
	TO-92	156
Power Dissipation	PD	(TJ(max)-TA)/ JA

Description

The AT431 is low-voltage three-terminal adjustable voltage reference with specified thermal stability over appli-cable commercial temperature ranges. Output voltage may be set to any value between Vref (1.24V) and 12V with two external resistors (see Figure 2).

When used with an optocoupler, the AT431 is ideal voltage reference in isolated feedback circuits for 1.8V to 12 V switching-mode power supplies. This device has typical output impedance of 0.20Ω. Active output circuitry provides a very sharp turn-on characteristic, making the AT431 excellent replacements for low-voltage zener diodes in many applications, including onboard regulation and adjustable power supplies.


Parameters:

Technical/Catalog Information	AT431
Vendor	NKK Switches of America Inc
Category	Switches
Accessory Type	Knob
For Use With/Related Products	HS, TS and PS Series
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	AT431 AT431 360 2365 ND 3602365ND 360-2365