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PDF ( 数据手册 , 数据表 ) APL431

零件编号 APL431
描述 Adjustable Precision Shunt Regulator
制造商 ANPEC
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APL431 数据手册, 描述, 功能
APL431
Adjustable Precision Shunt Regulator
Features
General Description
Precise Reference Voltage to 2.500V
Guaranteed 0.5%, 1% or 2% Reference Voltage
Tolerance
Sink Current Capability, 1mA to 100mA
Quick Turn-On
Adjustable Output Voltage, V = V to 20V
O REF
Low Operational Cathode Current, 250µA
Typical
0.1Typical Output Impedance
SOT-23-3, SOT-23-5, SOT-89, SOP-8, and TO-92
Packages
Lead Free and Green Devices Available
(RoHS Compliant)
Applications
Linear Regulators
Adjustable Power Supply
Switching Power Supply
The APL431 is a 3-terminal adjustable voltage reference
with specified thermal stability over applicable commer-
cial temperature ranges. Output voltage may be set to any
value between VREF (2.5 V) and 20 V with two external
resistors (See Figure 2). When used with an photocoupler,
the APL431 is an ideal voltage reference in isolated feed-
back circuits for 2.5V to 12V switching-mode power
supplies. This device has a typical output impedance of
0.1. Active output circuitry provides a very sharp turn-on
characteristic, making the APL431 excellent replacements
for zener diodes in many applications, including on-board
regulation and adjustable power supplies.
Pin Configuration
ANODE
3
12
REF CATHODE
NC NC
54
123
REF ANODE CATHODE
Symbol
SOT-23-3 (Top View) SOT-23-5 (Top View)
REF
Anode
Cathode
Functional Diagram
Cathode
123
REF ANODE CATHODE
SOT-89 (Top View)
CATHODE
ANODE
ANODE
NC
1
2
3
4
8 REF
7 ANODE
6 ANODE
5 NC
SOP-8 (Top View)
REF
Vref
3 CATHODE
2 ANODE
1 REF
Anode
TO-92 (Top View)
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.
Copyright © ANPEC Electronics Corp.
Rev. C.7 - Mar., 2009
1
www.anpec.com.tw







APL431 pdf, 数据表
APL431
Typical Operating Characteristics (Cont.)
VIN
10µF
232
15k
VO
8.25k
Voltage Amplification
Test Circuit
VIN VO
IK
CL
Stability Test Circuit for VKA=VREF
VIN
R1 10k
VO
IK
CL
R2
Stability Test Circuit for VKA>VREF,
VO= VKA= VREF x (1+R1/R2) + IREF x R1
Use the MLCC for CL
Copyright © ANPEC Electronics Corp.
Rev. C.7 - Mar., 2009
8
www.anpec.com.tw







APL431 equivalent, schematic
APL431
Taping Direction Information
SOT-23-3
USER DIRECTION OF FEED
SOT-23-5
SOT-89
USER DIRECTION OF FEED
USER DIRECTION OF FEED
SOP-8
USER DIRECTION OF FEED
Copyright © ANPEC Electronics Corp.
Rev. C.7 - Mar., 2009
16
www.anpec.com.tw










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