LM70880RRXR

Voltage Regulators - DC DC Switching Regulators Overview

The LM70880RRXR is a high-density synchronous buck converter from Texas Instruments, designed for wide input voltage applications ranging from 4.5V to 80V. It delivers up to 8A of output current with adjustable output voltages between 800mV and 55V. The device features a low quiescent current of 2.3µA in shutdown mode and supports switching frequencies from 200kHz to 2.2MHz. Operating within a temperature range of -40°C to +150°C, it utilizes a VQFN-EP-29 package to ensure thermal efficiency and reliability in compact designs.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Dual Random Spread Spectrum (DRSS) technology integrates low-frequency triangular and high-frequency cycle-by-cycle random modulation to enhance electromagnetic interference performance across a broad frequency band.
• Peak current mode control architecture enables straightforward loop compensation, rapid transient response, and precise load and line regulation.
• Integrated VCC bias supply regulator and user-selectable diode emulation reduce power consumption during light-load conditions while maintaining system stability.

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial automation systems requiring robust power conversion under varying load conditions
• Telecommunications infrastructure equipment utilizing standard bus voltages
• Distributed power architectures in computing and networking hardware

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix RRXR corresponds to the required tape-and-reel packaging configuration before finalizing orders. Confirm that the component meets RoHS compliance standards relevant to your manufacturing region. Ensure proper handling procedures are followed due to moisture sensitivity classification. Cross-reference the datasheet revision date to guarantee compatibility with existing design specifications and regulatory requirements.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing systems necessitating an input voltage range extending up to 80V with high current delivery capabilities. Consider the VQFN-EP-29 package for optimal thermal dissipation in space-constrained layouts. Evaluate the need for dual-phase operation if output currents exceeding 8A are required, as multiple units can be paralleled for enhanced current sharing and reduced ripple.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM708x0 family of low IQ, wide VIN synchronous buck converters. The series includes variants like the LM70660, which offers similar architectural benefits but with lower maximum input voltage and output current ratings. The LM70880 specifically targets high-power density applications where wide input ranges and efficient thermal management are critical design constraints.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The LM70660RRXR serves as a related alternative within the same family, offering comparable features but limited to a 65V input and 6A output. Verify that the reduced electrical ratings align with your specific application requirements before substituting.