SY21314 Datasheet | Silergy

High Efficiency 33V, 1MHz, 4A Current Limit Step-Up Regulator General Description The SY21314 high efficiency step-up regulator operates using current mode control over a wide input voltage range from 3V to 33V. It integrates an N-channel MOSFET with low 120mΩ RDS(ON) to minimize conduction loss. The 1MHz switching frequency and internal pensation reduce external inductor and capacitor sizes, and the built-in internal soft-start circuitry minimizes inrush current at startup. The device offers overcurrent and thermal shutdown protections. The SY21314 is available in a pact DFN3x3-10 package. Features - 3V to 33V Input Voltage Range - 33V Maximum Output Voltage - 4A Main MOSFET Current Limit - 15 µA Shutdown Current (Max.) - 100 µA Quiescent Current (Typ.) - Low RDS(ON) for Internal N-Channel MOSFET: 120mΩ - 1MHz Switching Frequency - Internal Soft-Start - ±2% 0.6V Reference - Cycle-by-Cycle Peak Current Limit - Overtemperature Protection - Ro HS-pliant and Halogen-Free - pact DFN3mmx3mm-10 Package Applications - Portable Devices - Battery Powered Systems - Networking Cards Powered from PCI or PCI-Express Slots Typical Application L1 4.7µH 10µF ON/...