SCT2220TVAR

The SCT2220 is a fully integrated high efficiency synchronous step-down DCDC converter capable of delivering 2A current. The devices operate over a wide input voltage range from 4.2V to 17V and fully integrate high-side power MOSFETs and synchronous MOSFETs with very low Rdson to minimize the conduction loss. With 800 kHz switching frequency, low output voltage ripple, small external inductor and capacitor size are achieved. SCT2220 adopts adaptive constant ON-time control architecture to achieve fast load transient responses for step-down applications. The devices operate in power saving mode, which maintains high efficiency during light load operation. It includes full protection features, such as over current protection, output under-voltage protection, input under-voltage lockout, and thermal shutdown. The SCT2220 requires a minimal number of external components and are available in a space-saving SOT563 and TSOT23 package.

Applications

• Flat Panel Digital TV and Monitors
• Surveillance
• Set Top Boxes
• Networking Systems
• Consumer Electronics General Purpose

Key features

• Wide Input Voltage: 4.2 - 17V
• 2A Continuous Output Current with Integrated 90mΩ/60mΩ FETs
• Wide Output Voltage Range: 0.8V - 7V
• Quiescent Current 150uA
• Cycle-by-Cycle Current Limiting
• Internal 2ms Soft-Start Limits the inrush current
• Fixed 800kHz Switching Frequency
• Input Under-Voltage Lockout
• Power save mode at light load
• Over-Temperature Protection
• Available in a SOT563 and TSOT23 Package