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APL1431 Datasheet(PDF) 1 Page - Anpec Electronics Coropration

Part # APL1431
Description  Adjustable Precision Shunt Regulator
Download  12 Pages
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Manufacturer  ANPEC [Anpec Electronics Coropration]
Direct Link  http://www.anpec.com.tw
Logo ANPEC - Anpec Electronics Coropration

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Copyright  ANPEC Electronics Corp.
Rev. A.3 - May., 2003
APL1431
www.anpec.com.tw
1
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise
customers to obtain the latest version of relevant information to verify before placing orders.
Adjustable Precision Shunt Regulator
Features
General Description
Applications
The APL1431 is a 3-terminal adjustable voltage ref-
erence with specified thermal stability over applicable
commercial temperature ranges. Output voltage may
be set to any value between V
ref (2.5 V) and 20 V with
two external resistors (see Figure 2). When used
with an photocoupler, the APL1431 is an ideal volt-
age reference in isolated feedback circuits for 2.5V
to 12V switching-mode power supplies. This device
has a typical output impedance of 0.1
Ω. Active out-
put circuitry provides a very sharp turn-on
characteristic,making the APL1431 excellent replace-
ments for zener diodes in many applications, includ-
ing on-board regulation and adjustable power
supplies.
•••••
Precise Reference Voltage to 2.500V
•••••
Guaranteed 0.5% or 1% Reference Voltage
Tolerance
•••••
Sink Current Capability , 1mA to 100mA
•••••
Quick Turn-on
•••••
Adjustable Output Voltage , V
O = VREF to 20V
•••••
Low Operational Cathode Current , 250µA
Typical
•••••
0.1
Ω Typical Output Impedance
•••••
SOT-23 , SOT-89 and TO-92 Packages
•••••
Linear Regulators
•••••
Adjustable Power Supply
•••••
Switching Power Supply
Symbol
Functional Diagram
Vref
+
_
Cathode
REF
Anode
SOT-23 (Top View)
REF
ANODE
CATHODE
12
3
SOT-89 (Top View)
REF
ANODE
CATHODE
12
3
REF
ANODE
CATHO DE
1
2
3
TO-92 (Top View)
Cathode
Anode
REF


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