LY推出高性能LY4058是一款具有涓流，恒流，恒压充电模式的锂电池充电控制芯片，可以分别给单节（4.2V/4.34V）锂电池或双节（8.4V/8.7V）锂电池进行快速高效地充电。Integrated 80mΩ Power MOSFET • 2V to 24V Input Voltage 
• 1.2MHz Fixed Switching Frequency • Internal 4A Switch Current Limit • Adjustable Output Voltage • Internal Compensation • Up to 28V Output Voltage 
• Automatic Pulse Frequency Modulation  Mode at Light Loads • up to 97% Efficiency 
• Available in a 6-Pin SOT23-6 Package 
 
APPLICATIONS 
• Battery-Powered Equipment • Set-Top Boxed • LCD Bais Supply 
• DSL and Cable Modems and Routers • Networking cards powered from PCI  or PCI express slots     
TYPICAL APPLICATION 
 
LY推出高性能LY4058是一款具有涓流，恒流，恒压充电模式的锂电池充电控制芯片，可以分别给单节（4.2V/4.34V）锂电池或双节（8.4V/8.7V）锂电池进行快速高效地充电。Integrated 80mΩ Power MOSFET • 2V to 24V Input Voltage 
• 1.2MHz Fixed Switching Frequency • Internal 4A Switch Current Limit • Adjustable Output Voltage • Internal Compensation • Up to 28V Output Voltage 
• Automatic Pulse Frequency Modulation  Mode at Light Loads • up to 97% Efficiency 
• Available in a 6-Pin SOT23-6 Package 
 
APPLICATIONS 
• Battery-Powered Equipment • Set-Top Boxed • LCD Bais Supply 
• DSL and Cable Modems and Routers • Networking cards powered from PCI  or PCI express slots     
TYPICAL APPLICATION 
 LY推出高性能LY4058是一款具有涓流，恒流，恒压充电模式的锂电池充电控制芯片，可以分别给单节（4.2V/4.34V）锂电池或双节（8.4V/8.7V）锂电池进行快速高效地充电。Integrated 80mΩ Power MOSFET • 2V to 24V Input Voltage 
• 1.2MHz Fixed Switching Frequency • Internal 4A Switch Current Limit • Adjustable Output Voltage • Internal Compensation • Up to 28V Output Voltage 
• Automatic Pulse Frequency Modulation  Mode at Light Loads • up to 97% Efficiency 
• Available in a 6-Pin SOT23-6 Package 
 
APPLICATIONS 
• Battery-Powered Equipment • Set-Top Boxed • LCD Bais Supply 
• DSL and Cable Modems and Routers • Networking cards powered from PCI  or PCI express slots     
TYPICAL APPLICATION 
 
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