Datasheet LT1614 (Analog Devices) - 10

LT1614
U OPERATIO Capacitors
critical, and either tantalum or ceramic can be used with little trade-off in circuit performance. Some capacitor As described previously, ceramic capacitors can be used types appropriate for use with the LT1614 are listed in with the LT1614. For lower cost applications, small tanta- Table 2. lum units can be used. A value of 22µF is acceptable, although larger capacitance values can be used. ESR is the
Diodes
most important parameter in selecting an output capaci- tor. The “flying” capacitor (C2 in the schematic figures) A Schottky diode is recommended for use with the LT1614. should be a 1µF ceramic type. An X5R or X7R dielectric The Motorola MBR0520 is a very good choice. Where the should be used to avoid capacitance decreasing severely input to output voltage differential exceeds 20V, use the with applied voltage. The input bypass capacitor is less MBR0530 ( a 30V diode).
Table 1. Inductor Vendors VENDOR PHONE URL PART COMMENT
Sumida (847) 956-0666 www.sumida.com CLS62-22022 22µH Coupled CD43-470 47µH Murata (404) 436-1300 www.murata.com LQH3C-220 22µH, 2mm Height Coiltronics (407) 241-7876 www.coiltronics.com CTX20-1 20µH Coupled, Low DCR
Table 2. Capacitor Vendors VENDOR PHONE URL PART COMMENT
Taiyo Yuden (408) 573-4150 www.t-yuden.com Ceramic Caps X5R Dielectric AVX (803) 448-9411 www.avxcorp.com Ceramic Caps Tantalum Caps Murata (404) 436-1300 www.murata.com Ceramic Caps 10