Family of High-Efficiency, Full Featured Powerwise ® Synchronous Buck Regualtors

The family offers a full range of features and options enabling the designer to fully customise their power solution to meet system needs.

When powering multiple point-of-loads, a combination of appropriate devices can be chosen based upon the features to create a small, efficient, and complete solution with minimal external components or circuitry. The LM201xx devices (eTSSOP-16 package) have a VIN range from 2.95V to 5.5V and supports up to 5A loads. The LM20242 device (eTSSOP-20 package) has a VIN range from 4.5V to 36V and supports up to 2A loads.

Look for the new LM315x range of National Simple Switchers ® and LM20x upgrade devices available on the Farnell website now!

Features & benefits:

• Precision enable can be used to turn the device on at a precise input voltage for sequencing of multiple devices
• Power good indicates that the output voltage is regulated within tolerance, and it can be used to sequence devices that have an enable input
• Tracking sets the output to accurately track an external supply for sequencing of multiple devices
• Soft-start provides a controlled voltage ramp to protect loads against in-rush current that could cause latch-up
• Sync-in allows synchronisation of the device to an external clock source
• Sync-out provides 180 degree out-of-phase clock output that can be used for current sharing or multi-phase operation
• Frequency adjust allows optimisation of the power solution for efficiency or solution size
• Synchronous operation with low RDS_ON integrated FETs provide high efficiency at high load currents and
  diode emulation mode for high efficiency at light loads
• External compensation allows the performance to be optimised for the desired output capacitor and inductor
• Start-up into pre-biased loads prevents the possibility of latch up in FPGA and ASIC applications
• High-accuracy current limit, over-voltage and under-voltage protection provides enhanced system reliability

Application information:

Ideal for powering FPGAs, DSPs, and microprocessors in servers, networking equipment, optical networks, and industrial power supplies.

Product information table: