Connection Example; Battery Switchover Connection Examples - Epson RX8111CE Applications Manual

RX8111CE

4. Connection Example

4.1. Battery Switchover connection Examples

Note. When connecting an outside power supply or a large-sized battery to V
install bypass capacitors more than 0.1 F in a V
As for each of bypass-capacitor, Install nearest in each of pin as much as possible.
EX.1 V and V are different.
IO DD
1.8 V
V
IO
V
DD
V
OUT
V
BAT
Figure 3 Connection example 1
Ex.3 Connecting a Non RE-Chargeable battery
V
IO
V
DD
V
OUT
VBAT
Figure 5 Connection example3
3.3 V
0.1 F
0.1 F
1.0 F
R
EDLC
or
Re-chargeable
Battery
V
DD
0.1 F
1.0 F
R
Non Re-chargeable
battery
terminal if necessary.
BAT
Ex.2 V and V
IO DD
V
IO
V
DD
V
V
BAT
Ex.4 Not using power-switch function
V
V
SW1
V
SW2
SW3
V
INIEN = 0, CHGEN = 0, SWSEL1,0 = 10b
Page − 4
,
BAT
are the same.
3.3 V
3.3 V
0.1 F
OUT
1.0 F
R
EDLC
or
Re-Chargeable
battery
Figure 4 Connection example 2
V
DD
IO
0.1 F
DD
OUT
1.0 F
BAT
Figure 6 Connection Example 4
ETM61E-01