y In use of ON/OFF CONTROL:
NJM2890
Preliminary
R
(0∼300kΩ)
VIN1
0.1uF
CONTROL
NOISE
BYPASS1
Cp=0.01uF
VIN1
VOUT1
1.0uF
OR
2.2uF(Vo≤2.6V)
NJM2890
(Ceramic Capacitor)
GND
GND
VOUT1
VIN2
0.1uF
R
(0∼300kΩ)
VIN2
VOUT2
1.0uF
OR
2.2uF(Vo≤2.6V)
NOISE (Ceramic Capacitor)
CONTROL BYPASS2
Cp=0.01uF
VOUT2
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.