Epson S1F70000 EPSON, S1F76640 Series, Recommended Operating Conditions

S1F76640 Series

Recommended Operating Conditions

Parameter

Symbol

Rating

Unit

Remarks

Min.

Max.

Step-up start voltage

VSTA1

1.8

—

V

ROSC=1MΩ, C4≥10μF

CL/C4≤1/20

Note 2

VSTA2

2.2

—

V

ROSC=1MΩ

Step-up stop voltage

VSTP

—

1.8

V

ROSC=1MΩ

Output load resistance

RL

RLmin Note 3)

—

Ω

—

Output load current

IO

—

20

mA

—

Oscillation frequency

fOSC

10

30

kHz

—

External resistor

ROSC

680

2000

kΩ

—

for oscillation

Step-up capacitor

C1,C2,C3,C4

3.3

—

μF

—

Stabilization output

RRV

100

1000

kΩ

—

regulation resistance

Note 1 :

All voltages are based on the GND being 0V.

Note 2 :

The figure below shows the recommended circuit for operation with low voltages (VDD=1.8 to 2.2V):

1

RV

VRI 16

2

VREG

VO 15

3

TC1

CAP3+ 14

+

4

TC2

CAP2+ 13

D1

CL

C2

C4

5

POFF

CAP2– 12

– +

6

VSS

CAP1+ 11

+

RL

–

C3

7

OSC1

CAP1– 10 –

C1

VI

8

OSC2

VDD 9

(D1(VF(1F=1mA) is recommended to be not more than 0.6V.)

Figure 6-2-1 Recommended Circuit Diagram for Low Voltage Operation (Example of 4 times

step-up circuit)

Note 3 : RLmin varies with input voltage. See Characteristics Graph (15).

S1F76640 Series

S1F70000 Series Technical Manual

EPSON 2–47