LM3485MMX

• Easy-to-use control methods
• There is no control loop compensation requirement
• Wide input range from 4.5V to 35V
• 1. Adjustable output range from 242V to V IN
• High efficiency 93%
• ± 1.3% (± 2% or more temperature) internal reference
• 100% duty cycle
• The maximum operating frequency > 1MHz
• Current limit protection
• MSOP - 8

illustrate

The LM3485 is a high-efficiency PFET switching regulator controller that can be used to quickly and easily develop small, low-cost, swap buck regulators for a wide range of applications. Hysteresis control architecture for the stability of the control loop without any use of external components, a wide variety of attention to simple design. The PFET architecture also allows for low component counts, as well as ultra-low dropout 100% duty cycle operation. Another benefit is high efficiency at light loads, eliminating the need to increase the output ripple of the operation.

The current limit protection function eliminates the need to sense the resistance by measuring the voltage of the PFET's R DS(ON). At cycle-by-cycle current limit, one resistor is adjustable to ensure safe operation within the output current range.

apply

• Stb
• DSL/cable modem
• PC / IA
• Automatic computer
• LCD
• Battery-powered portable applications
• Distributed power systems
• Always on the power supply