Chargeable Current Characteristics; Reference Value Of Switching Element - Epson RX8111CE Applications Manual

RX8111CE

9.1.2. Chargeable Current Characteristics

Chargeable current characteristics to Battery. It is ON resistance of SW1, 2, 3.
The reference value of +25 C Typ. samples.
Y axis = Charge current Ichg, X axis = Vdef = (V
Figure 10 Chargeable current characteristics of V
V
V
BAT

9.1.3.Reference Value Of Switching Element.

Item
Current tolerance
Diode Vf
Diode IR
Charge current from V
– V
DD
BAT
= 3.0 V
DD
V
OUT
SW3 SW2
RTC Power Supply
Figure 12 Circuit of charge to re-chargeable Battery.
Table 6 Reference value of switching element
Characteristics
40 mA Max.
0.60 V / 1 mA Typ.
0.85 V / 10 mA Typ.
50 nA Max.
must be use less than 40 mA.
BAT
).
BAT
Figure 11 Chargeable current characteristics of V
V
DD
A
SW1
SW1 = SW2 = SW3 = ON,
= 3.0 V, +25 C
V
DD
VR = 5.5 V, -40 C to +85 C
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V = 5.5V
DD
Main
Power
Supply
Re-chargeable
Battery
Condition
+25 C
ETM61E-01
BAT