ELM0431BA_17 Datasheet, PDF (1/4 Pages) ELM Technology Corporation – 2.5V Programable shunt regulator

ELM0431BA 2.5V Programable shunt regulator
■General description
ELM0431BA is three-terminal adjustable shunt regulator utilizing an accurate 2.5V band-gap reference. The
output voltage can be set to any value between 2.5V (Vref) to 29V with two external resistors as shown in the
typical application circuit. The device exhibit a wide operating current range of 0.4 to 100 mA with a typical
dynamic impedance of 0.25Ω. The characteristics of these reference make it excellent replacements for zener
diodes in many applications such as digital voltmeters, power supplies, and op amp circuitry. The 2.5V volt
reference makes it convenient to obtain a stable reference from 5.0V logic supplies.
ELM0431BA shunt regulator is available in a SOT-23 package.
■Features
• Low cost solution
• Shunt capacity
• Output voltage range(adj.)
• Output impedance
• Trimmed band-gap design
• Package
: 100mA
: Set up to 29V
: Typ.0.25Ω
: 1%
: SOT-23
■Application
• Linear regulator
• Precision voltage reference
• Switching power supplies
• Battery operating equipment
• Instrumentation
■Maximum absolute ratings
Parameter
Symbol
Limit
Unit
Cathode-Anode reverse breakdown voltage
Vka
30
V
Cathode –Anode current
Ika
100
mA
Reference input current
Iref
10
mA
Power dissipation
Pd
200
mW
Junction temperature
Tj
150
°C
Storage temperature
Tstg
-65 to +150
°C
■Selection guide
ELM0431BA-S
Symbol
a
Package
b
Product version
c
Taping direction
* ^{Taping direction is one way.}
B: SOT-23
A
S: Refer to PKG file
■Pin configuration
SOT-23(TOP VIEW)
3
1
2
Pin No.
1
2
3
Pin name
REFERENCE
CATHODE
ANODE
ELM0431 B A - S
↑↑ ↑
ab c
■Circuit
Cathod(K)
Reference(R)
Anode(A)
4- 1
Rev.1.1