Fiche De Données (STEVAL-TLL009V1)Table des matièresTable 1. Device summary11 Block diagram4Figure 1. STCF07 block diagram42 Pin configuration5Figure 2. STCF07 pin connections (top view)5Table 2. STCF07 pin description53 Maximum ratings6Table 3. Absolute maximum ratings6Table 4. Thermal data64 Application information7Figure 3. Application schematic diagram7Table 5. List of external components75 Electrical characteristics8Table 6. Electrical characteristics86 Introduction107 Logic pin description117.1 CSEL pin117.2 FAULT pin117.3 ENABLE pin118 Detailed description128.1 Buck-boost converter128.2 High current mode128.3 Low current mode128.4 Shutdown mode128.5 Soft-start12Figure 4. Startup: LED current rise time138.6 STCF07 protection features138.6.1 Peak current and short-circuit protection138.6.2 Overvoltage protection138.6.3 Thermal shutdown protection138.6.4 Sensing of LED temperature with the NTC resistor13Figure 5. Typical LED temperature sensing application with the NTC resistor148.6.5 Undervoltage lockout function149 PCB design159.1 PCB design rules159.2 PCB design of the demonstration board16Figure 6. Top layer16Figure 7. Bottom layer16Figure 8. Top overlay179.3 Schematic of the demonstration board18Figure 9. Schematic diagram of the STCF07 demonstration board1810 Typical performance characteristics19Figure 10. IOUT 80 mA vs. VIN19Figure 11. IOUT 800 mA vs. VIN19Figure 12. Efficiency vs. VIN19Figure 13. Efficiency vs. VIN, IO = 400 mA19Figure 14. Line transient1911 External component selection2011.1 Input and output capacitor selection2011.2 Inductor selection2011.3 LED selection2011.4 RHC selection2011.5 RLC selection2111.6 NTC and RX resistor selection2112 Package mechanical data2213 Revision history25Table 7. Document revision history25Taille: 500 koPages: 26Language: EnglishOuvrir le manuel