LM20343MHE

• Input voltage range from 4.5V to 36V
• 3A output current, peak current gender Age and sex
• 130mΩ/110mΩ integrated power MOSFETs
• 94% peak efficiency synchronous rectification
• 1.5% feedback voltage accuracy
• Current mode control with optional compensation
• Resistor programming, 1MHz capability oscillator
• Adjustable output voltage as low as 0.8V
• Suitable for pre-biased loads
• Programmable soft-start with external capacitors
• The hysteresis needle is precisely activated
• Overvoltage protection, undervoltage lockout output input and PGOOD
• Peak current limiting, overheating shutdown and restart for internal protection
• Precise current limits the minimum inductor size
• Nonlinear slope compensation current mode
• eTSSOP - 20 bare pads

illustrate

The LM20343 is a full-featured synchronous buck regulator that provides a load capacity of up to 3A. The current mode controls loop compensation with only two external components while providing high performance and ease of use. The device is optimized to operate in the input voltage range of 4.5V to 36V, making it ideal for use in high-voltage systems.

The device has internal overvoltage protection (OVP) and overcurrent protection (OCP) circuitry to improve system reliability. Precise enable pins and integrated undervoltage lockout allow for tightly controlled and sequencing equipment steering. Start-up inrush current limit, both internally fixed and externally adjustable soft-start circuitry. Fault detection and power sequencing are made possible with integrated power ready (PGOOD) circuitry.

The device can adjust the frequency from 250 kHz to 1.0 MHz by connecting an external resistor from the RT pin to ground.

The design of this LM20343 works well on multi-rail power supplies. The output voltage of the device can be set to a higher voltage rail tracking using stainless steel/Tielck pins. If the LM20343 output is pre-biased at start, it will not absorb current until the internal soft-start ramp output low level exceeds the voltage at the feedback pin.

The LM20343 provided is a 20-pin eTSSOP package with exposed pads that can be soldered to printed circuit boards, eliminating the need for bulky heatsinks.

apply

• Simple design with high efficiency point for load regulation from a 4.5V to 36V bus
• High-performance DSPs, FPGAs, ASICs, and microprocessors
• Communication infrastructure, automobiles