s1f78520 Epson Electronics America, Inc., s1f78520 Datasheet - Page 18

• Manufacturer Part Number: s1f78520
• Description: Charge-pump Step Down Regulator With Power Saving Mode
• Manufacturer: Epson Electronics America, Inc.

S1F78520
18
REFERENCE EXTERNAL CONNECTION (AN EXAMPLE)
Standard connection 1
Recommended values for the external parts
ROSC = 1MEG
Ra = (Make the detection voltage setting according to the formulae 2 and 4.)
Rb = (Make the detection voltage setting according to the formulae 2 and 4.)
RS = RP = RVD = RPG = 470k
CDD = CDD2 = 4.7 F
CDPG = 0.1 F [ In case a delay time setting of 100ms is made.]
RDPG = 1MEG [ In case a delay time setting of 100ms is made.]
CV01 = CV02 = 22 F
C1 = C2 = 0.47 F
VO1LV1,
VO1LV0
VO2LV1,
VO2LV0
XSTBY
XPOFF
OSCIN
VSEL
V
V
DD
SS
+
CDD
RS
RP
Ra
Rb
2
2
ROSC
+
RDPG
CDPG
V
VO1LV1,
VO1LV0
VO2LV1,
VO2LV0
ROSC1
OSCIN
XSTBY
VSENS
VSEL
XPOFF
CPG
V
DD
SS
XVDET
V
V
V
V
V
OUT1
C1N
C2N
OUT2
C1P
C2P
DD2
SS3
SS2
PG
+
+
+
+
CVO1
C1
C2
CVO2
CDD2
+
RVD
RPG
V
V
XVDET
PG
OUT1
OUT2
Rev. 1.2