Commonly-used Circuits

This page is aim to share the Commonly-used Circuits. Hope it will be useful for you guys. If you have any suggestions or want to have more circuits, Please feel free to send your wishes to <mailto:shuyang@seeedstudio.com>

Power Supply

LDO 3.3V

Vin=4.75v-10v Vout=3.3v I=1A

Download

the BOM here

the eagle schematic & layout here

the datasheet for CJT1117-3.3

BOM

Seeed PN Image MPN Category Package Designator Qty Description Manufacturer Datasheet
1310190P1 CJT1117-3.3 IC SOT-223 U1 1 SMD PMIC LDO Vin4.75v Vout 3.3v I=1A CJ 1310190P1
0130120P1 TAJB106K016RNJ Capacitor AVX-B C1,C2 2 SMD CAP Tantalum 10uF-16V 10% AVX 0130120P1
0100020P1 CC0603KRX7R9BB104 Capacitor 0603 C3,C4 2 SMD CAP Ceramic 100nF-50V-10%-X7R YAGEO 0100020P1
302030060 KS100uF/16V 5X7 Capacitor Radial-2.0-D5.0*H7mm C5,C6 2 DIP CAP Aluminum 100uF-16V;Radial-2.0-D5.0*H7mm Jiaweicheng 302030060

LDO 5.0V

Vin=6.5v-12v Vout=5v I=1A

Download

the BOM here

the eagle schematic & layout here



BOM

Seeed PN Image MPN Category Package Designator Qty Description Manufacturer Datasheet
1310170P1 CJT1117-5.0 IC SOT-223 U1 1 SMD PMIC LDO Vin6.5v Vout 5v I=1A CJ 1310170P1
0130120P1 TAJB106K016RNJ Capacitor AVX-B C1,C2 2 SMD CAP Tantalum 10uF-16V 10% AVX 0130120P1
0100020P1 CC0603KRX7R9BB104 Capacitor 0603 C3,C4 2 SMD CAP Ceramic 100nF-50V-10%-X7R YAGEO 0100020P1
302030060 KS100uF/16V 5X7 Capacitor Radial-2.0-D5.0*H7mm C5,C6 2 DIP CAP Aluminum 100uF-16V;Radial-2.0-D5.0*H7mm Jiaweicheng 302030060
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