MITSUMI
Precision Adjustable Shunt Regulator MM1431 Series
Precision Adjustable Shunt Regulator
MM1431 Series
Outline
This IC is 3-termial adjustable shunt regulator, which provides a highly accurate 0.8% bandgap reference
voltage. The output voltage can be adjusted to any value between reference voltage VREF and 35V with
two external resistors. Moreover, there are a lot of ranges of the application as a zener diode besides the
replacement is possible because it has steep turn-on characteristics.
Features
(Unless otherwise specified, Topr=+25°C)
(1) Reference voltage tolerance
VREF=2.495V±0.8%
(2) Output voltage can be adjusted
VREF Vo 35V
(3) Low Dynamic Output Impedance
ZKA
0.2 typ.
(4) Specifications
Operating Temperature
−30~+85ºC
Cathode to Anode voltage
VKA
VREF~35 V
Cathode current
IK
0.6~50 mA
Reference voltage
VREF
2.495V±0.8%
Reference voltage deviation over temperature range
±10mV
(VKA=VREF, IK=10mA Ta=−30~+85ºC)
Minimum Cathode Current
IKmin.
0.6mA max.
Off-state Cathode Current
IOFF.
0.1µA typ.
Pin Assignment
Top view
TO-92A
Top view
SOT-25A *
Top view
SC-82ABB
Anode
Reference
Reference
Cathode
5
4
4
3
1
Reference 1 2 3 Cathode
Anode
2
3
1
2
N.C.
N.C. SUB Cathode
Anode
* note : The second terminal is SUB, so
connect the terminal to GND.
Product list
Packages
TO-92A (BULK)
TO-92A (TAPING)
SOT-25A
SC-82ABB
SC-82ABB
Parts no.
MM1431AT
MM1431ATT
MM1431ANRE
MM1431CURE
MM1431DURE
Reference voltage
2.495V±0.8%
2.495V±0.8%
2.495V±0.8%
2.495V±0.8%
2.495V±0.4%
Cathode current
0.6~50 mA
0.6~50 mA
0.6~50 mA
0.6~50 mA
0.6~50 mA
Dynamic impedance
0.2Ω typ. / 0.5Ω Max
0.2Ω typ. / 0.5Ω Max
0.2Ω typ. / 0.5Ω Max
0.2Ω typ. / 0.8 Ω Max
0.2Ω typ. / 0.8 Ω Max
• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
