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说明

MCP1642B/D是一款紧凑、高效、固定频率、同步升压DC-DC转换器。它为单电池、双电池或三电池碱性、镍镉、镍氢、单电池锂离子或锂聚合物电池供电的应用提供了一种易于使用的电源解决方案。MCP1642B/D具有1.8A典型峰值输入电流限制，在输入超过3.6V的5V应用中可以提供超过1A的输出电流

特性

• Up to 96% Typical Efficiency
• IOUT > 175 mA @ 1.2V VIN, 3.3V VOUT
• IOUT >600 mA @ 2.4V VIN, 3.3V VOUT
• IOUT >800 mA @ 3.3V VIN, 5.0V VOUT
• IOUT > 1A @ VIN > 3.6V, 5.0V VOUT
• Low Start-up Voltage: 0.65V
• Minimum Operating Input Voltage: 0.35V
• Maximum Input Voltage < VOUT < 5.5V
• Adjustable Output Voltage Range:1.8V to 5.5V
• PWM Operation at 1 MHz
• Shutdown Current (All States): < 1 µA
• Internal Synchronous Rectifier
• Internal Compensation
• Inrush Current Limiting and Internal Soft-Start
• True Load Disconnect Shutdown (MCP1642B)
• Input-to-Output Bypass Option (MCP1642D)
• Low Noise, Anti-Ringing Control
• Over-temperature Protection
• MSOP-8 or 2x3 8-Lead DFN packages

参数