SMIC 0.13µm 5V-3.3V 350mA Synchronous Buck DC-DC

Overview

Key Features

• Process: SMIC 0.13μm 3.3V/1.2V 1P6/7/8M Logic Process
• Efficiency: 90% when IOUT=350mA; 80% when IOUT=2.5mA (VIN=5V)
• Input Voltage: 4.0~5.5V
• Output Voltage: 3.3V±5%
• Max Output Current: 350mA
• Oscillation Frequency: ~1MHz
• Over Current Protected: ~800mA
• Standby Current: <300μA when VIN=5V, IOUT=0A
• Shut Down Current: <10μA when VIN=5V
• Soft Start Time: typical 0.8ms from active E to VOUT=3.3V
• External inductor: 4.7μH with DCR lower than 100mΩ
• External Output Capacitor: 4.7μF with ESR from 25mΩ to 200mΩ
• External Input Capacitor: 4.7μF with low ESR
• Operating Junction Temperature: -40°C~+25°C~+125°C

Technical Specifications