NJM2871/A, NJM2872/A

s TYPICAL APPLICATION

CONTROL

NOISE

BYPASS

GND

0.1uF

Cp=0.01uF

R

(0

(ceramic)

1.0uF

*note1

*note1 2.0V < Vo

≤ 2.6V version : Co=2.2uF(ceramic)

Vo

≤ 2.0V version : Co=4.7uF(ceramic)

The quiescent current can be reduced by using a resistance “R”. Instead, it increases the minimum

operating voltage. For further information, please refer to Figure “Output Voltage vs. Control Voltage”.

CONTROL

NOISE

BYPASS

GND

0.1uF

Cp=0.01uF

R

(ceramic)

1.0uF

*note1

*note1 2.0V < Vo

≤ 2.6V version : Co=2.2uF(ceramic)

Vo

≤ 2.0V version : Co=4.7uF(ceramic)

State of control terminal:

•“H”→ output is enabled.

• “L” or “open” → output is disabled.

✱Noise bypass Capacitance Cp

Noise bypass capacitance Cp reduces noise generated by band-gap reference circuit.

Noise level and ripple rejection will be improved when larger Cp is used.

Use of smaller Cp value may cause oscillation.

Use the Cp value of 0.01uF greater to avoid the problem.