LM2854MHX-500

• Input voltage range of 2.95V to 5.5V
• The maximum load current is 4A
• Wide bandwidth voltage mode control loop with partial internal compensation
• The fixed switching frequency is 500 kHz or 1 MHz
• 35mΩ integrated MOSFET switch
• The adjustable output voltage is as low as 0.8V
• Optimized initial accuracy and temperature drift of the reference voltage
• External soft-start control and tracking capability
• Enable Pin and Hysteresis
• The low standby current is 230μA
• Pre-bias load start-up function
• Combined UVLO, OCP and thermal shutdown
• 100% duty cycle capability
• eTSSOP - 16 bare pad package

illustrate

PowerWise for LM2854 ® SIMPLE SWITCHER ® The buck regulator is a 500 kHz or 1 MHz step-down switching regulator capable of coaxing 4A loads with excellent power conversion efficiency, line and load regulation, and output accuracy. The LM2854 accepts input voltage rails between 2.95V and 5.5V and provides adjustable and highly accurate output voltages down to 0.8V. Establishing an external soft-start with a small capacitor facilitates controlled start-up, and the LM2854 is capable of entering a prebiased output voltage for normal startup. Partial internal compensation reduces the amount of external passive components and board space typically necessary for a voltage-mode buck converter application, but maintains flexibility to handle ceramic and/or electrolytic load capacitance. Cycle-by-cycle peak current limiting for lossless protection against load overcurrent or short-circuit faults, enabling comparators simplifies sequencing applications. The LM2854 is available in a TSSOP-16 package with exposed pads, which improves the thermal performance of the regulator.

apply

• Low voltage from 5V or 3.3V iron POL gauge
• On-premises solutions for ASIC/FPGA/DSP/MICROPROCESSOR cores or I/O power supplies
• Broadband networks and communications infrastructure
• Laptops