Datasheet

Evaluation Board User Guide UG-179
Rev. 0 | Page 5 of 12
TYPICAL PERFORMANCE CHARACTERISTICS
I
OUT
(A)
40
50
60
70
80
90
100
0 0.2 0.4 0.6 0.8 1.0 1.2
EFFICIEN
C
Y (%)
V
OUT
= 5.0V
V
OUT
= 3.3V
V
OUT
= 2.5V
INDUCTOR: LPS6225-472MLC
DIODE: B230A
09232-072
Figure 2. Efficiency Curve, V
IN
= 12 V, f
SW
= 1.4 MHz
I
OUT
(A)
40
50
60
70
80
90
100
0 0.2 0.4 0.6 0.8 1.0 1.2
EFFICIENCY (%)
V
OUT
= 5.0V
V
OUT
= 3.3V
V
OUT
= 2.5V
V
OUT
= 1.8V
V
OUT
= 1.2V
INDUCTOR: LPS6225-103MLC
DIODE: B230A
0
9232-073
Figure 3. Efficiency Curve, V
IN
= 12 V, f
SW
= 700 kHz
–0.20
–0.15
–0.10
–0.05
0
0.05
0.10
0.15
0.20
5 8 11 14 17 20
LINE REGUL
A
TION (%)
f
SW
= 1.4MHz
f
SW
= 700kHz
V
IN
(V)
0
9232-068
Figure 4. Line Regulation, V
OUT
= 3.3 V, I
OUT
= 500 mA
–0.20
–0.15
–0.10
–0.05
0
0.05
0.10
0.15
0.20
0.20 0.4 0.6 0.8 1.0 1.2
LOAD REGUL
A
TION (%)
f
SW
= 1.4MHz
f
SW
= 700kHz
I
OUT
(A)
0
9232-067
Figure 5. Load Regulation, V
OUT
= 3.3 V, V
IN
= 12 V
CH1 5mV
CH4 500mA Ω
CH2 5V M400ns A CH2 7.4V
2
4
1
B
W
B
W
B
W
V
OUT
IL
SW
09232-024
Figure 6. Steady State at Heavy Load, f
SW
= 1.4 MHz, I
OUT
= 1 A
CH1 20mV
CH4 200mA Ω
CH2 5V M10µs A CH2 8V
2
4
1
B
W
B
W
B
W
V
OUT
IL
SW
0
9232-025
Figure 7. Steady State at Light Load, f
SW
= 1.4 MHz, I
OUT
= 40 mA