NCP5030
100
95
90
85
80
75
70
65
60
55
I out = 300 mA
50
2.5
3.0
3.5
4.0
4.5
5.0
5.5
V IN (V)
Figure 2. Efficiency vs. V in Voltage
V bat
10 m F X5R 0805 6.3 V
4.7 m H
C1
1 m F
C2
L1
VIN
10
PVIN
4
LX1
5/6
LX2
7
Osc
700 kHz
Thermal
Shutdown
8
VOUT
Up to 900 mA
PCA
12
C3
R1
39 k
PWM CONTROLLER
9
VS
3
CTRL
Bandgap
LED
AGND
11
FB
1
2
COMP
PGND
13
R2
C4
100 k
22 pF
C5
330 pF
Figure 3. Simplified Block Diagram
http://onsemi.com
2
R3
220 m
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