LM3485Q1MM

• Easy-to-use control method
• No control loop compensation is required
• 4.5V至35V宽输入电压范围
• 1.242V to V_INAdjustable output range
• High efficiency: 93%
• ± 1.3% (± 2% temperature) internal reference
• 100% duty cycle
• Maximum operating frequency > 1MHz
• Current limit protection
• Adopt MSOP-8

illustrate

LM3485是一个高效率的PFET的开关稳压器控制器，可用于快速，方便地开发出小型，低成本，开关降压稳压器的广泛应用。 The hysteresis control architecture provides a simple design without any control loop stability, using a wide variety of external component concerns. PFET's architecture also allows for low component count, as well as ultra-low dropout, 100% duty cycle operation. Another benefit is the increased output ripple at light loads with high efficiency and no operation.

提供电流限制保护功能是通过测量的PFET的R_DS（ON）电压，从而消除了一个检测电阻器的需要。 Cycle-by-cycle current limiting allows the output current range of a resistor to be adjusted to ensure safe operation.

apply

• Stb
• DSL/cable modem
• PC / IA
• Automatic computer
• TFT display
• Battery-powered portable applications
• Distributed power systems
• Total power switch