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 POWER SUPPLY ICs
ICS
Precision Adjustable Shunt Regulator
MM1431 Series
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[Outline]
This IC is 3-termial adjustable shunt regulator, which provides a highly accurate 0.4% 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 specifi ed, Topr=+25C)
1. Reference voltage tolerance
VREF=
2.495V±0.8%(MM1431C,MM1431E,MM1431G)
 
2.495V±0.5%(MM1431F)
 
2.495V0.4%(MM1431D)
2. Output voltage can be adjusted
VREF≤Vo≤35V
3. Low Dynamic Output Impedance  
|ZKA|≤0.4Ω typ.
4. Specifications
●Operating Temperature -30 ~+105C
●Cathode current Ik 0.6~50mA
●Reference voltage deviation over temperature range 10mV (VKA=VREF, IK=10mA Ta=-30~+85C)
●Minimum Cathode Current IKmin. 0.6mA max.
●Off-state Cathode Current IOFF 0.1µA typ.


[Package]


[Pin Assignment]
MM1431CU, MM1431DU MM1431DN, MM1431GN

SC-82ABB
(TOP VIEW)

0
1
N.C.
2
Anode
3
Cathode
4
Reference
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SOT-23A
(TOP VIEW)

0
1
Reference
2
Cathode
3
Anode
MM1431EN, MM1431FN MM1431CN

SOT-23A
(TOP VIEW)
0
1
Cathode
2
Reference
3
Anode
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SOT-25A*
(TOP VIEW)
0
1
NC
2
SUB
3
Cathode
4
Reference
5
Anode
*note:The second terminal is SUB, so connect the terminal to GND.


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[NOTE]
-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.
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