EV0034 查看數據表（PDF） - Monolithic Power Systems
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EV0034 Datasheet PDF : 14 Pages
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Monolithic Power Systems
Figure 8: Efficiency vs. Load Current (Non-Bootstrapped)
MP1527
2A, 1.3MHz
Step-Up Converter
100.00%
95.00%
90.00%
85.00%
80.00%
75.00%
70.00%
65.00%
60.00%
55.00%
50.00%
10
VOUT = 12V
VIN=3.3V
VIN=5V
VIN=8V
100
Load Current (mA)
1000
Figure 9: VIN = 5V, VOUT = 12V @ 500mA Load
VIN =5V 10µF
FAULT
ON/OFF
10nF
10nF
100K
IN
FAULT SW
EN
SS
BP
FB
4.7µH
1N5819HW
MBR0530
91K
VOUT = 12V
C2 @0.5A
10µF
COMP
C4
10K
R3
N/A
SGND PGND
10K
C3
5.6nF
Figure 10: Driving Multiple Strings of White LEDs
VIN= 2.6
to 25V
4.7µF
1µF
100K
1µF
IN
SW
FAULT
FAULT
ON/OFF
FB
EN MP1527
COMP
SS
BP
SGND
10nF 10nF
PGND
Up to
6 LEDs
per String
60
60
60
5.6K
4.7nF
MP1527 Rev 1.8_8/31/05
Monolithic Power Systems, Inc.
6
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