BenutzerhandbuchInhaltsverzeichnisPreface5Chapter 1. Product Overview91.1 Introduction91.2 What is the TC1303B Dual-Output Regulator with Power-Good Output Demo Board?101.3 What the TC1303B Dual-Output Regulator with Power-Good Output Demo Board kit includes10Chapter 2. Installation and Operation112.1 Introduction112.2 Features112.3 Getting Started11Appendix A. Schematic and Layouts13A.1 Introduction13A.2 Board SchEmatic14A.3 Board – Assembly Drawing15A.4 Board – Top Overlay16A.5 Board – Top Layer17A.6 Board – Bottom Layer18Appendix B. Bill-Of-Materials (BOM)19Größe: 263 KBSeiten: 20Language: EnglishHandbuch öffnen
DatenbogenInhaltsverzeichnis1.0 Electrical Characteristics72.0 Typical Performance Curves11FIGURE 2-1: IQ Switcher and LDO Current vs. Ambient Temperature (TC1303A,B).11FIGURE 2-2: IQ Switcher and LDO Current vs. Ambient Temperature (TC1303C, TC1304).11FIGURE 2-3: IQ Switcher Current vs. Ambient Temperature.11FIGURE 2-4: IQ LDO Current vs. Ambient Temperature.11FIGURE 2-5: VOUT1 Output Efficiency vs. Input Voltage (VOUT1 = 1.2V).11FIGURE 2-6: VOUT1 Output Efficiency vs. IOUT1 (VOUT1 = 1.2V).11FIGURE 2-7: VOUT1 Output Efficiency vs. Input Voltage (VOUT1 = 1.8V).12FIGURE 2-8: VOUT1 Output Efficiency vs. IOUT1 (VOUT1 = 1.8V).12FIGURE 2-9: VOUT1 Output Efficiency vs. Input Voltage (VOUT1 = 3.3V).12FIGURE 2-10: VOUT1 Output Efficiency vs. IOUT1 (VOUT1 = 3.3V).12FIGURE 2-11: VOUT1 vs. IOUT1 (VOUT1 = 1.2V).12FIGURE 2-12: VOUT1 vs. IOUT1 (VOUT1 = 1.8V).12FIGURE 2-13: VOUT1 vs. IOUT1 (VOUT1 = 3.3V).13FIGURE 2-14: VOUT1 Switching Frequency vs. Input Voltage.13FIGURE 2-15: VOUT1 Switching Frequency vs. Ambient Temperature.13FIGURE 2-16: VOUT1 Adjustable Feedback Voltage vs. Ambient Temperature.13FIGURE 2-17: VOUT1 Switch Resistance vs. Input Voltage.13FIGURE 2-18: VOUT1 Switch Resistance vs. Ambient Temperature.13FIGURE 2-19: VOUT1 Dropout Voltage vs. Ambient Temperature.14FIGURE 2-20: VOUT1 and VOUT2 Heavy Load Switching Waveforms vs. Time.14FIGURE 2-21: VOUT1 and VOUT2 Light Load Switching Waveforms vs. Time.14FIGURE 2-22: VOUT2 Output Voltage vs. Input Voltage (VOUT2 = 1.5V).14FIGURE 2-23: VOUT2 Output Voltage vs. Input Voltage (VOUT2 = 1.8V).14FIGURE 2-24: VOUT2 Output Voltage vs. Input Voltage (VOUT2 = 2.5V).14FIGURE 2-25: VOUT2 Output Voltage vs. Input Voltage (VOUT2 = 3.3V).15FIGURE 2-26: VOUT2 Dropout Voltage vs. Ambient Temperature (VOUT2 = 2.5V).15FIGURE 2-27: VOUT2 Dropout Voltage vs. Ambient Temperature (VOUT2 = 3.3V).15FIGURE 2-28: VOUT2 Line Regulation vs. Ambient Temperature.15FIGURE 2-29: VOUT2 Load Regulation vs. Ambient Temperature.15FIGURE 2-30: PG Active Delay Time-out vs. Ambient Temperature.15FIGURE 2-31: PG Threshold Voltage vs. Ambient Temperature.16FIGURE 2-32: PG Output Voltage Level Low vs. Ambient Temperature.16FIGURE 2-33: PG Output Voltage Level High vs. Ambient Temperature.16FIGURE 2-34: VOUT2 Power Supply Ripple Rejection vs. Frequency.16FIGURE 2-35: VOUT2 Noise vs. Frequency.16FIGURE 2-36: VOUT1 Load Step Response vs. Time.16FIGURE 2-37: VOUT2 Load Step Response vs. Time.17FIGURE 2-38: VOUT1 and VOUT2 Line Step Response vs. Time.17FIGURE 2-39: VOUT1 and VOUT2 Start-up Waveforms.17FIGURE 2-40: VOUT1 and VOUT2 Shutdown Waveforms.17FIGURE 2-41: Power-Good Output Timing.17FIGURE 2-42: Start-up Waveforms (TC1304).17FIGURE 2-43: Shutdown Waveforms (TC1304).183.0 Pin Descriptions19TABLE 3-1: pin function table193.1 TC1303 LDO Shutdown Input Pin (SHDN2)193.2 TC1304 Shutdown Input Pin (SHDN)193.3 LDO Input Voltage Pin (VIN2)193.4 LDO Output Voltage Pin (VOUT2)193.5 Power-Good Output Pin (PG)193.6 Analog Ground Pin (AGND)193.7 Buck Regulator Output Sense Pin (VFB/VOUT1)193.8 Buck Regulator Shutdown Input Pin (SHDN1)203.9 Buck Regulator Input Voltage Pin (VIN1)203.10 Buck Inductor Output Pin (LX)203.11 Power Ground Pin (PGND)203.12 Exposed Pad (EP)204.0 Detailed Description214.1 Device Overview214.2 Synchronous Buck Regulator214.3 Low Drop Out Regulator (LDO)214.4 Power-Good22FIGURE 4-1: Power-Good Timing.224.5 Power Good Output Options22TABLE 4-1: PG Available Options224.6 TC1304 Sequencing23FIGURE 4-2: TC1304 Sequencing Circuit.23FIGURE 4-3: TC1304 Power-up Timing from SHDN.234.7 Soft Start234.8 Overtemperature Protection235.0 Application Circuits/ Issues255.1 Typical Applications255.2 Fixed Output Application255.3 Adjustable Output Application255.4 Input and Output Capacitor Selection25TABLE 5-1: TC1303A, TC1303B, TC1303C, TC1304 Recommended Capacitor Values255.5 Inductor Selection26TABLE 5-2: TC1303A, TC1303B, TC1303C, TC1304 Recommended inductor values265.6 Thermal Calculations265.7 PCB Layout Information27FIGURE 5-1: Component Placement, Fixed 10-Pin MSOP.27FIGURE 5-2: Component Placement, Fixed 10-Pin DFN.275.8 Design Example286.0 Packaging Information296.1 Package Marking Information29Größe: 1,24 MBSeiten: 38Language: EnglishHandbuch öffnen
