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AME431B-2.5V

Description
Adjustable Precision Shunt Regulator
File Size197KB,22 Pages
ManufacturerAnalogMicroElectronics,Inc.(AME)
AMT was founded in Taiwan in November 2000 and merged into AMT Microelectronics, Inc., a US company located in Silicon Valley, California, USA. Its stock was officially listed for public trading in March 2004.
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AME431B-2.5V Overview

Adjustable Precision Shunt Regulator

AME431B-2.5V Preview

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AME
AME431B-2.5V
n
General Description
The AME431B series ICs are 3-terminal adjustable
shunt regulator with guaranteed temperature stability over
a full operation range. These ICs feature sharp turn-on
characteristics, low temperature coefficient and low out-
put impendance, which make them ideal substitutes for
Zener diodes in applications such as switching power
supply, charger and other adjustable regulators.
The reference is set to 2.5V for AME431Bxxxxx25. The
output voltage can be set to 2.5V to 36V for V
REF
=2.5V
part type with two external resistors.
V
REF
Adjustable Precision
Shunt Regulator
n
Functional Block Diagram
Cathode
REF
The AME431B precision reference is offered in two ref-
erence tolerance: 0.5% and 1.0%
The 5 main packages have low thermal impendance
which allows operation over a wide range of -40
o
C t o
+125
o
C.
Anode
n
Features
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High Stability under Capacitive Load
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Low Temperature Deviation: 4.5mV Typical
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Low Equivalent Full-Range Temperature Coefficient
with 20PPM/
o
C Typical
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Low Dynamic Output Resistance: 0.2Ω Typical
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Sink Current Capacity from 1mA to 100mA
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Low Output Noise
l
Available in 7 Packages: TO-92-3, SOT-23,
SOT-89, SOP-8, SOT-25, TSOT-23 and TSOT-25
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All AME’ s Lead Free Products Meet RoHS
Standards
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Applications
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Adjustable Power Supplies
l
Linear Regulators
l
Battery Operated Computer
l
Portable Electronics
l
l
l
l
l
Instrumentation
Switching Power Supply
Mother Board
LCD Monitor
Note Book Computer
Rev.B.04
1
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