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LTC3589IUJ-TRPBF 数据表(PDF) 25 Page - Linear Technology |
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LTC3589IUJ-TRPBF 数据表(HTML) 25 Page - Linear Technology |
25 / 44 page LTC3589 25 3589p at least two times larger than the maximum load current to ensure that the inductor does not saturate during normal operation. If output short circuit is a possible condition, the inductor should be rated to handle the maximum peak current specified for the buck-boost converter. Table 9 shows several inductors that work well with the LTC3589 buck-boost regulator. Capacitor Selection Low ESR ceramic capacitors should be used at both the output and input supply of the buck-boost switching regulator. Only X5R or X7R ceramic capacitors should be used because they retain their capacitance over wider voltage and temperature ranges than other ceramic types. OPERATION A 22μF capacitor is sufficient for the buck-boost switch- ing regulator output. For good transient response and stability the output capacitor should retain at least 10μF of capacitance over operating temperature and bias voltage. Place at least 4.7μF decoupling capacitance as close as possible to PVIN4 pin. Refer to Table 11 for recommended ceramic capacitor manufacturers. Table 11. Ceramic Capacitor Manufacturers AVX www.avxcorp.com Murata www.murata.com Taiyo Yuden www.t-yuden.com Vishay Siliconix www.vishay.com TDK www.tdk.com Table 10. Inductors for Buck-Boost Switching Regulator MANUFACTURERS PART NUMBER VALUE (μH) DCR (Ω) MAX DC CURRENT (A) SIZE (mm) W × L × H Coilcraft XPL4020-152ML XPL4020-222ML XPL4020-332ML LPS6225-332ML LPS6225-472ML 1.5 2.2 3.3 3.3 4.7 0.036 0.060 0.085 0.055 0.065 3.60 2.60 2.40 3.50 3.00 4.2 × 4.2 × 2.0 4.2 × 4.2 × 2.0 4.2 × 4.2 × 2.0 6.0 × 6.0 × 2.0 6.0 × 6.0 × 2.0 Cooper SD14-1R5-R SD14-2R0-R SD14-2R5-R SD14-3R2-R SD25-3R3-R 1.5 2.0 2.5 3.2 3.3 0.039 0.045 0.060 0.066 0.038 2.91 2.56 2.29 2.00 2.21 5.2 × 5.2 × 1.45 5.2 × 5.2 × 1.45 5.2 × 5.2 × 1.45 5.2 × 5.2 × 1.45 4.8 × 4.8 × 2.5 Sumida CDRH5D16NP-3R3N CDRH5D16NP-4R7N 3.3 4.7 0.045 0.064 2.60 2.05 5.6 × 5.6 × 1.8 5.6 × 5.6 × 1.8 TDK VLF5014ST-2R2N2R3 VLCF5020T-2R7N2R2-1 VLCF5020T-3R3N2R0-1 2.2 2.7 3.3 0.073 0.083 0.096 2.3 2.2 2 4.8 × 4.6 × 1.4 5.0 × 5.0 × 2.0 5.0 × 5.0 × 2.0 TOKO 1124BS-1R8N 1124BS-3R3N 1.8 3.3 0.056 0.074 2.70 2.10 4.5 × 4.7 × 1.8 4.5 × 4.7 × 1.8 Tokin H-DI-0520-3R3 H-DI-0630-3R8 3.3 3.8 0.062 0.040 2.00 2.00 5.3 × 5.3 × 2.0 6.3 × 6.3 × 3.0 Wurth 744052002 7440420027 744053003 7440530047 2.5 2.7 3.0 4.7 0.030 0.047 0.024 0.030 2.4 2.2 2.8 2.4 5.8 × 5.8 × 1.8 4.8 × 4.8 × 1.8 5.8 × 5.8 × 2.8 5.8 × 5.8 × 2.8 |
类似零件编号 - LTC3589IUJ-TRPBF |
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类似说明 - LTC3589IUJ-TRPBF |
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