"The LM5010 Step Down Switching Regulator is designed with all the functions necessary to implement a low-cost, efficient buck bias regulator. It can supply over 1A load current. This high-voltage regulator incorporates an N-Channel Buck Switch and is available in thermally enhanced 10-pin WSON and 14-pin HTSSOP packages. The regulator operates at a constant frequency, which remains unchanged despite variations in line and load due to the inverse relationship between input voltage and on-time. The valley current limit detection is set at 1.25A. Notable features include VCC under-voltage lockout, thermal shutdown, gate drive under-voltage lockout, and a maximum duty cycle limiter. Importantly, the scheme employed in this regulator requires no loop compensation, resulting in fast load transient response and simplifying circuit implementation.

Features:

Input Voltage Range: 8V to 75V
Valley Current Limit At 1.25A
Secondary High Voltage Post Regulator
Integrated Startup Regulator
Ultra-Fast Transient Response
Operating Frequency Remains Constant With Load and Line Variations
Maximum Duty Cycle Limited During Startup
Integrated N-Channel Buck Switch
High Efficiency Point-Of-Load (POL) Regulator
Non-Isolated Telecommunications Buck Regulator
Switching Frequency Can Exceed 1 MHz
Adjustable Output Voltage
Precision 2.5V Feedback Reference
Thermal shutdown
Packages available in 10-Pin WSON (4 mm x 4 mm) and 14-Pin HTSSOP
Both Packages Have Exposed Thermal Pad for Improved Heat Dissipation