SGM66055中文资料2.2MHz, Fixed Output Synchronous Tiny Step-Up Converter with a 4A Switch数据手册SGMICRO规格书

描述 Description

The SGM66055 is an internally compensated, 2.2MHz switching frequency, peak current mode, synchronous Boost switching converter. Even below the minimum system battery voltage, the device maintains the output voltage regulation for a minimum output load current of 0.9A. This device turns into power-saving mode to maintain high efficiency by lowering switching frequency. With its anti-ringing circuitry damping the charge in parasitic capacitor, it reduces EMI interference significantly. Its output is disconnected by the rectifier circuit during shutdown with no input to output leakage.

The SGM66055-4.5 is available in the Green WLCSP-1.21×1.21-9B package; the SGM66055-5.0 is available in the Green WLCSP-1.21×1.21-9B and TDFN-2×3-8BL packages.

特性 Features

• Operating Input Voltage Range: 2.5V to 4.5V
• Fixed Output Voltages: 4.5V and 5.0V
• Output Voltage Clamping: 5.7V
• Up to 93% Efficieny
• Quiescent Current: 23μA (TYP)
• Shutdown Current: 1μA (MAX)
• Improved Light Load Efficiency with Power-Save Mode (PSM)
• Load Disconnect During Shutdown
• Low Reverse Leakage Current when VOUT > VIN
• Thermal Shutdown
• -40℃ to +85℃ Operating Temperature Range
• Available in Green WLCSP-1.21×1.21-9B and TDFN-2×3-8BL Packages

应用 Application

• USB OTG
• Class-D Audio Amplifier
• Smart Phones and Tablets
• Portable and Wearable Devices