Rev. 1.10

- 6 -

When using these ICs, consider the following points:

Phase Compensation

In these ICs, phase compensation is made for securing stable operation even if the load current is varied. For this purpose, be

sure to use a 2.2

(Note: When the additional ceramic capacitors are connected to the Output Pin with Output capacitor for phase compensation,

the operation might be unstable. Because of this, test these ICs with as same external components as ones to be used on the

PCB.)

PCB Layout

unstable operation. Connect a capacitor with as much as 1.0

Set external components, especially output capacitor as close as possible to the ICs and make wiring shortest.

C1

C2

V

IN

A

C2 = Tantal2.2

µＦ

:*1 C1 = Tantal1.0

µＦ

*1

1 VDD

ECO 4

OUT 5

3 CE

2 GND

R1160XXX1X

SERIES

Fig.1 Output Voltage vs. Output Current Test Circuit

C1

C2

V

C2 = Tantal 2.2

µF

C1 = Tantal 1.0

µF

1 VDD

ECO 4

OUT 5

3

CE

2

GND

R1160XXX1X

SERIES

Fig.2 Output Voltage vs. Input Voltage Test Circuit