mb3775pfv Fujitsu Microelectronics, Inc., mb3775pfv Datasheet - Page 10

• Manufacturer Part Number: mb3775pfv
• Description: Switching Regulator Controller
• Manufacturer: Fujitsu Microelectronics, Inc.

10
MB3775
HOW TO SET OUTPUT VOLTAGE
The output voltage is set using the connection shown in Fig. 5 and 6.
The error amplifiers are supplied to the internal reference voltage circuit as are the other internal circuits. The
common-mode input voltage range is from 0.2 V to +1.45 V.
When the amplifiers are operated non-inverting, tie the inverting terminal to V
are operated inverting, tie the non-inverting terminal to ground.
R
R
1
1
V
REF
V
REF
R
Fig. 6 -Connection of Error Amp.
R
+
2
+
Fig. 5 -Connection of Error Amp.
2
Output Voltage V
Output Voltage V
0
is minus
0
V
PIN 5 or PIN 12
is plus
V
PIN 5 or PIN 12
0
0
+
-
[V
[V
0
0
-
+
= V
= V
REF
REF
X (1 + R
X (R
REF
2
/R
2
1
/R
( 1.28 V). When the amplifiers
)]
1
)]