MB3778P Fujitsu Microelectronics, Inc., MB3778P Datasheet - Page 13

• Manufacturer Part Number: MB3778P
• Description: Switching Regulator Controller
• Manufacturer: Fujitsu Microelectronics, Inc.

HOW TO SET THE OUTPUT VOLTAGE
The output voltage is set using the connections shown in “Connection of error Amp. Output Voltage V
“Connection of Error Amp. Output Voltage V
The error amplifier power is supplied by the reference voltage circuit as is that of the other internal circuits. The
common mode input voltage range is from 1.05 V to 1.45 V.
Set 1.23 V (V
terminals.
• Connection of Error Amp. Output Voltage V
• Connection of Error Amp. Output Voltage V
REF
/2) as the reference input voltage that is connected to either inverting or non-inverting input
R
R
R
R
V
REF
V
REF
R
R
R
R
1
2
2
1
V
O
V
O
0
0
0
< 0”.
R
R
< 0
NF
NF
0
V
V
O
O
2
V
2
V
REF
REF
R
R
2
1
(R
(R
PIN 5 or PIN 12
1
PIN 5
1
R
R
2
2
)
)
V
REF
MB3778
0
0” and
13