3.3V/150mA SEPIC Circuit William Circuit Performance Efficie

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3.3V/150mA SEPIC Circuit William Circuit Performance Efficie

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3.3V/150mA SEPIC Circuit William
Circuit Performance
Efficiency >75% 150mA Output ripple voltage <100mV Low-profile solution
Efficiency Output Current
+4.2V
10µH
EFFICIENCY
MIC2145
SGND
10µF/6.3V MBR0530T1 VOUT +3.3V 10µH 487k 10µF 6.3V
3.6V
4.2V
10µF 6.3V
100k
RSET PGND 0.01µF
OUTPUT CURRENT (mA)
Figure SEPIC Circuit
Figure Typical 3.3V Output Efficiency
Bill Materials
Item Part Number MIC2145BMM GRM42-6X5R106K6.3 GRM40X7R103K50 MBR0530T1 MBRX0530 CR43-100 CRCW06031003FRT1 CRCW06031002FRT1 CRCW06031004FRT1 CRCW06034873FRT1 Manufacturer Micrel1 Murata2 Murata2 Semiconductor3 Description High Effciciency Boost Converter 10µF, 6.3V Ceramic 0.01µF, Ceramic 0.5A, Schottky Rectifier 0.5A, Schottky Rectifier 10µH Inductor 100k, resistor, size 0603 10k, resistor, size 0603 resistor, size 0603 487k, resistor, size 0603
Micro Commercial Corp.4 Sumida5 Vishay-Dale6 Vishay-Dale6 Vishay-Dale6 Vishay-Dale6
Note Micrel Semiconductor tel: 408-944-0800 Note Murata tel: 949-916-4000 Note Semiconductor tel: 800-344-3860 Note Micro Commercial Corp. tel: 800-346-3371 Note Sumida tel: 510-668-0660 Note Vishay-Dale tel:402-644-4218
Micrel, Inc. 1849 Fortune Drive Jose, 95131 (408) 944-0800 (408) 944-0970 http://www.micrel.com
August 2002
MICREL, INC. 1849 FORTUNE DRIVE
JOSE, 95131
(408) 944-0800
(408) 944-0970
http://www.micrel.com
This information believed accurate reliable, however responsibility assumed Micrel infringement patents other rights third parties resulting from use. license granted implication otherwise under patent patent right Micrel, Inc. 2002 Micrel, Incorporated
August 2002

3.3V/150mA SEPIC Circuit William Circuit Performance Efficie

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