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SI-3012KM Arkusz danych(PDF) 3 Page - Allegro MicroSystems |
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SI-3012KM Arkusz danych(HTML) 3 Page - Allegro MicroSystems |
3 / 9 page 18 ICs 1-1-1 Linear Regulator ICs ■Block Diagram ●SI-3010KM/SI-3012KM ●SI-3025KM/SI-3033KM/SI-3050KM/SI-3090KM/SI-3120KM 2 VIN 1 REF VC VOUT ADJ GND 5 3 4 TSD - + 2 VIN 1 REF VC VO Sense GND 5 3 4 TSD - + ■Typical Connection Diagram CIN: Input capacitor (22 µF or larger) CO: Output capacitor *1: SI-3012KM/3025KM/3033KM (22 µF or larger) It comes with a circuit configuration that uses a low ESR capacitor for the output capacitor. If an electrolytic capacitor is used, oscillation may occur at a low temperature. SI-3010KM/3050KM/3090KM/3120KM (47 µF or larger) If a low ESR capacitor is used, oscillation may occur. *2: D1: Reverse bias protection diode This diode is required for protection against reverse biasing between the input and output. (Sanken SJPL-H2 is recommended.) This diode is not required at VO ≤ 3.3 V. ●SI-3025KM/SI-3033KM/SI-3050KM/ SI-3090KM/SI-3120KM ●SI-3010KM/SI-3012KM R1, R2: Output voltage setting resistors Output voltage can be set by connecting R1 and R2 as shown above. R2: 10 k Ω is recommended (24 kΩ for SI-3012KM). R1=(VO–VADJ) ÷(VADJ/R2) *3: For SI-3010KM, insert R3 in case of setting VO to VO ≤ 1.5V. Recommended value for R3 is 10k Ω. GND 3 VIN CIN 2 VO CO 4 VC 1 sense 5 + + D1*2 *1 GND 3 VIN CIN R1 R2 2 VO 4 VC 1 ADJ 5 + D1*2 CO + *1 ■Reference Data Copper Laminate Area-Thermal Resistance Copper Laminate Area-Power Dissipation 10 100 1000 40 50 60 70 80 90 100 Copper Laminate Area (mm2) Glass-epoxy board : 30 ×30mm Glass-epoxy board : 30 ×30mm 0 0.5 1 1.5 Ta=25 °C 40 °C 60 °C 85 °C 10 100 1000 Copper Laminate Area (mm2) • Obtaining the junction temperature Measure the temperature TC at the lead part of the GND pin with a thermocouple, etc. Then, substitute this value in the following formula to obtain the junction temperature. Tj=PD × θj–C + TC ( θj–C = 6°C/W) Case temperature Tc measurement point |
Podobny numer części - SI-3012KM |
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Podobny opis - SI-3012KM |
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