LM20144QMH

• The input voltage range is 2.95V to 5.5V
• Precise current limiting minimizes inductor size
• 97% peak efficiency
• Adjustable switching frequency (500 kHz - 1.5 MHz)
• 32mΩ integrated FET switch
• Start into a pre-biased load
• Output voltage tracking
• Peak current mode control
• Adjustable output voltage as low as 0.8V
• Adjustable soft-start with external capacitors
• Precision enable pin with hysteresis
• Integrated overvoltage protection, undervoltage lockout, good power and thermal shutdown
• eTSSOP - 16 Exposed Pad Package

illustrate

LM20144 is a full-featured, tunable frequency synchronous buck regulator capable of delivering up to 4A of continuous output current. It can compensate for the current mode control loop and can be stable with almost any type of output capacitor. In most cases, the compensation device, which requires only two external elements, provides maximum flexibility and ease of use. The optimized operating input voltage range of 2.95V to 5.5V makes it suitable for a wide range of devices in low-voltage systems.

The device features internal overvoltage protection (OVP) and overcurrent protection (OCP) circuitry, enhancing system reliability. The enable pin and integrated undervoltage lockout allow a sophisticated device to be tightly controlled and sequenced on. Both a fixed internal and external adjustable soft-start circuit with limited start-up inrush current. Possible with integrated power supply good circuit fault detection and power sequencing.

LM20144 work in multi-rail power architecture design. The output voltage of the device can be configured to track a higher voltage rail using SS/TRK pins. If the LM20144 output is pre-biased to start, it will not draw current and pull the output low until the internal soft-start ramp exceeds the voltage feedback pin.

The frequency of such a device can be adjusted from 500 kHz to 1.5 MHz by connecting an external resistor RT pin to ground.

LM20144 is available in a 16-pin eTSSOP package that can be soldered to the PCB with bare pads, eliminating the need for bulky heatsinks.

apply

• Simple design and load regulation for high efficiency angles from a 5V or 3.3V bus
• FPGAs, ASICs, and microprocessors for high-performance DSPs
• Broadband, network and optical communication infrastructure