S1F76620 Series; Description; Features; Block Diagram - Epson Power Supply IC S1F70000 Technical Manual

S1F76620 Series

S1F76620 Series CMOS DC/DC Converter (Voltage Doubler)

DESCRIPTION

S1F76620 is a high efficiency and low power consump-
tion CMOS DC/DC converter. It enables to obtain 2
times step-up output (3.0 to 16V) from input voltage
(1.5 to 8V). Also, S1F76620 enable to drive ICs (liquid
crystal driver, analog IC, etc.), which require another
power supply in addition to logic main power supply,
with a single power supply, and it is suitable for micro
power IC of hand-held computers, handy devices, etc.
due to its small power consumption.

BLOCK DIAGRAM

V
DD
OSC1
OSC2
P
OFF
GND
1–10

FEATURES

(1) High efficiency and low power consumption
(2) Easy voltage conversion from input voltage V
(3) Output current
(4) Power conversion efficiency : Typ. 95%
(5) Possibility of series connection
(6) Low voltage operation
(7) Built-in CR oscillator
(8) SOP4-8pin ······························ S1F76620M0A0
CR oscillator
EPSON
CMOS DC/DC converter
to positive potential side or negative potential side
• Input V (5V) to output –V
DD
2V (10V)
DD
(In 2-piece use, V
DD
Bare Chip ······························· S1F76620D0A0
Voltage conversion circuit
CAP1+ CAP1–
DD
(–5V),
DD
: Max. 30mA
(V = 5V)
DD
= 5V, V = 15V)
O
: Suitable for
battery drive
V
O
S1F70000 Series
Technical Manual
(5V)