CHAPTER 14 REGULATOR
User’s Manual U15195EJ5V0UD
600
14.3 Connection Example
(1) When using an on-chip regulator
An on-chip regulator is used connected to an N-ch transistor.
An example of connection when using an N-ch transistor and the mount pad dimensions when mounted on the
2SD1950 (VL standard product) (when using a glass epoxy board) are shown below.
Figure 14-1. Example of Connection When Using N-ch Transistor
RV
DD
V
DD
(4.5 to 5.5 V)
REGOUT
N-ch transistor
22 F
(recommended)
REGOFF
generator
REGIN
(3.3 V)
Internal circuit
Regulator
V850E/IA2
R
CV
SS
µ
Remark
The 2SD1950 (VL standard product, surface mount type) or 2SD1581 (independent type) is
recommended as the N-ch transistor.
110
k
Ω
is recommended for R.
An electrolytic capacitor of 22
µ
F is recommended.