LMR38020FDDAR

Voltage Regulators - DC DC Switching Regulators Overview

The LMR38020FDDAR is a synchronous step-down DC/DC converter from Texas Instruments, designed for wide input voltage applications. It operates within an input range of 4.2V to 80V and delivers a continuous output current of 2A. The device features a low quiescent current of 40µA and supports an adjustable switching frequency between 200kHz and 2.2MHz. It utilizes an 8-pin HSOIC PowerPAD package and includes integrated protection mechanisms such as cycle-by-cycle current limit and thermal shutdown.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification with internal compensation for simplified design
• Configurable switching frequency allows optimization for efficiency or solution size
• Pseudo-random spread spectrum technology minimizes electromagnetic interference emissions
• Precision enable pin supports direct connection to wide input voltages

Voltage Regulators - DC DC Switching Regulators Applications

• Wide input industrial systems
• MHEV and EV power architectures
• Factory automation and control equipment
• Wireless infrastructure and network power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'FDDAR' against the manufacturer's official ordering information to confirm package type and tape-and-reel specifications. Ensure compatibility with required operating temperature ranges and check for functional safety documentation if deploying in certified automotive or industrial environments. Cross-reference datasheet revisions for any updates to electrical characteristics.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing systems requiring high input voltage tolerance up to 80V with moderate current demands. The adjustable frequency feature enables trade-offs between passive component size and conversion efficiency. Internal compensation reduces bill-of-materials complexity compared to externally compensated alternatives, making it suitable for space-constrained layouts.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the SIMPLE SWITCHER family of power converters, characterized by integrated power switches and control circuitry. The LMR38020 series targets applications needing robust performance across broad input ranges without extensive external protection components. It serves as a core power management element in modern electronic systems requiring reliable voltage regulation.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LMR38020SDDAR

Voltage Regulators - DC DC Switching Regulators FAQ

What is the maximum duty cycle capability of the LMR38020?

The device supports a maximum duty cycle of 97%, allowing operation during input voltage sags down to 4.2V.

Does the LMR38020 support frequency synchronization?

Yes, the switching frequency can be synchronized to an external clock signal to avoid noise-sensitive bands.