LSP5523-R8A

Voltage Regulators - DC DC Switching Regulators Overview

The LSP5523-R8A is a monolithic synchronous buck converter from Diodes Incorporated, designed for high-efficiency power management. It integrates internal power MOSFETs to deliver a continuous output current of 3A across an input voltage range of 4.5V to 27V. The device operates at a fixed switching frequency of 340kHz and supports adjustable output voltages from 0.925V up to 0.8 times the input voltage. Key electrical parameters include a maximum efficiency of 93%, a quiescent current of 1.3mA, and an operating temperature range of -20°C to +125°C. It utilizes current mode control for fast transient response and features programmable soft-start capabilities.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates low-resistance internal power MOSFETs for efficient step-down conversion
• Provides cycle-by-cycle current limiting and short-circuit protection
• Features programmable soft-start to prevent inrush currents during startup
• Ensures stability with low ESR ceramic output capacitors

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems
• Network infrastructure equipment
• Power supplies for FPGA, DSP, and ASIC applications
• Green electronic products
• Laptop computer power systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix R8A against the manufacturer's official datasheet to confirm tape-and-reel packaging specifications and pinout orientation. Ensure that the ESOP-8L package dimensions align with the target PCB footprint requirements. Confirm RoHS compliance status and lead-free characteristics through the latest component documentation before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a wide input voltage range up to 27V is required alongside a 3A load capacity. The fixed 340kHz frequency allows for optimized passive component sizing compared to variable frequency alternatives. Consider the integrated MOSFET design for simplified thermal management and reduced bill of materials compared to discrete solutions requiring external switching elements.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LSP5523 series of synchronous buck regulators manufactured by Diodes Incorporated. The series focuses on providing robust power conversion solutions for portable and industrial electronics. The R8A designation typically indicates specific packaging configurations within the product line, distinguishing it from other variants in terms of reel quantity or handling specifications while maintaining identical electrical performance.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The LSP5503L-R8A serves as a related variant within the same family, offering similar functionality but with a reduced maximum input voltage rating of 23V instead of 27V. Designers must verify if the system's input voltage exceeds this limit before substituting. Other generic 3A synchronous buck converters may require significant circuit redesign due to differences in pinouts, control architectures, and thermal dissipation characteristics.