TEXAS INSTRUMENTS LM22680MR-ADJ/NOPB DC-DC Switching Buck (Step Down) Regulator, Adjustable, 4.5V-42Vin, 1.285V-37Vout, 2Aout, SOP-8

The LM22680MR-ADJ/NOPB is a SIMPLE SWITCHER Step-down Voltage Regulator with precision enable. This regulator provides all of the functions necessary to implement an efficient high-voltage step-down (buck) regulator using a minimum of external components. This easy to use regulator incorporates a 42V N-channel MOSFET switch that can provide up to 2A of load current. Excellent line and load regulation along with high efficiency (90%) are featured. Voltage mode control offers short minimum on-time, allowing the widest ratio between input and output voltages. Internal loop compensation means that the user is free from the tedious task of calculating the loop compensation components. Available in an adjustable output voltage version and the default switching frequency is set at 500kHz, thus allowing for small external components and good transient response. In addition, the frequency can be adjusted over a range of 200kHz to 1MHz with a single external resistor.

• Internally compensated voltage mode control
• Stable with low ESR ceramic capacitors
• 200m N-channel MOSFET
• 1.5% Feedback reference accuracy
• Adjustable switching frequency and synchronization
• Precision enable pin
• Integrated boot-strap diode
• Adjustable soft-start
• Green product and no Sb/Br

Applications

Power Management, Industrial, Communications & Networking

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