Low Power-Loss Voltage Regulators
Fig. 7 Circuit Operating Current vs. Input
Voltage (PQ1R30) (Typical Value)
10.0
Circuit operating current Ibias (mA)
PQ1R30 Series
Fig. 8 Dropout Voltage vs. Junction
Temperature (PQ1R30) (Typical Value)
0.4
0.35
V
IN
: Voltage when output voltage is 95%
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0
0
C
IN
=1µF
C
O
=10µF
Dropout voltage Vi-o (V)
0.3
0.25
0.2
0.15
Vi-o(1) : Io=60mA
0.1
0.05
Vi-o(2) : Io=150mA
R
L
=20Ω
R
L
=40Ω
R
L
=∞
5.0
10.0
Input voltage V
IN
(V)
15.0
0
–40 –20 0 20 40 60 80 100 120 140
Junction temperature Tj (˚C)
Fig. 9 Quiescent Current vs. Junction
Temperature
250
V
IN=
Vo(TYP)+1.0V,
Vc=1.8V, Io=0A
Fig.10 Ripple Rejection vs. Input Ripple
Frequency
80
Ta=25˚C, V
IN
=4.0V,
Io=10mA (300Ω), Co=10µF
70
Ripple rejection RR (dB)
Quiescent current Iq (µA)
200
150
100
50
0
–40 –20 0 20 40 60 80 100 120 140
Junction temperature Tj (˚C)
60
50
40
30
20
10
0
0.1
Cn=0.1µF
Cn : No
1
10
Input ripple frequency f (kHz)
100
Fig.11 Dropout Voltage vs. Output Current
300
Ta=25˚C, V
C
=1.8V, V
IN
: Voltage when
output voltage is 95%.
Fig.12 Output Peak Current vs. Junction
Temperature
0.3
V
IN
: Vo(TYP)+1.0V, Vc=1.8V, Iop :
Output current when output voltage lowers
0.3V in comparison with the value at Io=30mA
Output peak current Iop(A)
Dropout voltage Vi-o (mV)
250
200
150
100
50
0
0.25
0.2
0.15
0
20
40 60 80 100 120 140 160
Output current Io (mA)
0.1
–40 –20 0 20 40 60 80 100 120 140
Junction temperature Tj (˚C)
SHARP [ SHARP ELECTRIONIC COMPONENTS ]
