MITSUMI
High-Precision Three-Pin Regulator MM1257
High-Precision Three-Pin Regulator
Monolithic IC MM1257
Outline
This IC is a high-precision high-voltage stabilized power supply device which stands out from ordinary low-
saturation three-pin regulators.
It can be used at a wide range of output voltages, from 3V to 12V, delivering output currents up to 100mA. It
is one of a series of devices available at lower prices than previous regulators.
Features
1.
2.
3.
4.
5.
6.
Input current
Output noise voltage
Maximum output current
No-load input current
Thermal shutdown circuit provided
Output voltage ranks
27V max.
200碌V
RMS
typ.
100mA max.
500碌A(chǔ) typ.
A : 12V鹵2% E : 6V鹵2%
B : 10V鹵2% F : 5V鹵2%
C : 9V鹵2% G : 3V鹵2%
D : 8V鹵2%
Package
TO-92A (MM1257 T)
MMP-4A (MM1257 M)
The output voltage rank appears in the boxes.
*
Applications
1. Handheld computers
2. Portable transceivers
3. Cordless phones
Pin Assignment
4
3
1
2
3
NC
V
IN
V
OUT
GND
1
2
3
1
2
3
V
OUT
GND
V
IN
1
2
4
MMP-4A
TO-92A