Wide Vin 50V Non-synchronous Boost/Flyback/SEPIC Controller, SCT81620 Replace LM3478.
SCT81620
SCT81620.pdf
SCT81620.pdfFEATURES
• Qualified for Automotive Applications
• Wide Input Voltage Range: 3.2V-50V
• Low Shutdown Current 3.7uA
• Low Quiescent operating Current: 450uA
• Adjustable Switching Frequency: 100KHz to 2.2MHz
• Integrated Frequency Dithering for EMI Mitigation
• External Frequency Synchronic
• External Compensation
• Supports additional Slope Compensation
• 22ms Internal Soft-start Time
• Integrated Protection Feature
- Constant Peak-Current Protection Threshold
Over Input Voltage
- Output Overvoltage Protection
- Adjust Under-Voltage Lockout
- Optional Hiccup Over Load Protection
- Thermal Shutdown Protection:165°C
• MSOP-8L(3mm*3mm) Package
PIN CONFIGUTION
CROSS
FEATURES
• 8-lead VSSOP-8 and SOIC-8 packages
• Internal Push-Pull Driver With 1-A Peak
Current Capability
• Current Limit and Thermal Shutdown
• Frequency Compensation Optimized With a
Capacitor and a Resistor
• Internal Soft Start
• Current Mode Operation
• Undervoltage Lockout With Hysteresis
• Create a Custom Design Using the LM3478
with the WEBENCH Power Designer
PIN CONFIGUTION
