S1F78100Y2A Epson Electronics America, Inc., S1F78100Y2A Datasheet - Page 208

• Manufacturer Part Number: S1F78100Y2A
• Description: High Precision Voltage Regulators
• Manufacturer: Epson Electronics America, Inc.

S1F75300 Series
Voltage Follower Portion
The voltage follower portion of S1F75300 enables to adjust bias with the electronic volume as explained in Para-
graph 5.1.3.
Figure 6 shows the block diagram of the voltage follower portion.
After the power is turned on, the resistance between V
When n is 11 and 13 for example, the voltages at V
EN Pin
This pin is for boosting action and for stopping and starting the voltage follower portion.
When the EN pin is set to Low level, the internal circuit action stops and the current consumption is restrained.
5–8
V
V
V
V
Figure 6 Block Diagram of Voltage Follower
Table 2 Output Voltage of Voltage Follower
1
2
3
4
(1/160 duty)
13/14•V
12/14•V
nR
2/14•V
1/14•V
R
R
R
R
n=11
1
EPSON
to V
2
0
0
0
0
and V
4
are as follows after the power is turned on:
3
is set to nR. (The n value is selected optionally.)
V
V
V
V
V
0
1
2
3
4
(1/240 duty)
16/17•V
16/17•V
2/17•V
1/17•V
n=13
0
0
0
0
Technical Manual
S1F70000 Series