LM5146RGYR

$3.75

Description：IC REG CTRLR BUCK 20VQFN
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:2ee25b785c99 Category: DC DC Switching Controllers Brand: Texas Instruments

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Product introduction

LM5146RGYR is listed in the DC DC Switching Controllers range at ChipApex. The manufacturer field lists Texas Instruments. Its product description is IC REG CTRLR BUCK 20VQFN. Review the specifications below when checking this part for your BOM.

DC DC Switching Controllers specifications for LM5146RGYR

Description：IC REG CTRLR BUCK 20VQFN
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT)
Output Type：Transistor Driver
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Number of Outputs：1
Output Phases：1
Voltage - Supply (Vcc/Vdd)：5.5V ~ 100V
Frequency - Switching：100kHz ~ 1MHz
Duty Cycle (Max)：99%
Synchronous Rectifier：Yes
Clock Sync：Yes
Serial Interfaces：-
Control Features：Current Limit, Enable, Frequency Control, Phase Control, Power Good, Ramp, Soft Start
Operating Temperature：-40°C ~ 150°C (TJ)
Mounting Type：Surface Mount, Wettable Flank
Package / Case：20-VFQFN Exposed Pad
Supplier Device Package：20-VQFN (3.5x4.5)
Grade：-
Qualification：-

DC DC Switching Controllers datasheet and documents for LM5146RGYR

LM5146RGYR

DC DC Switching Controllers Overview

The LM5146RGYR is a synchronous buck DC/DC controller from Texas Instruments designed for high-voltage applications. It operates with an input voltage range of 5.5V to 100V and supports adjustable output voltages from 800mV to 60V. The device features a switchable switching frequency between 100kHz and 1MHz, capable of driving up to 30A of output current. It utilizes a 20-pin VQFN package rated for operation between -40°C and +150°C.

DC DC Switching Controllers Feature Summary

Supports wide duty cycle ranges with minimum on-time of 40ns for high step-down ratios
Includes adaptive timing gate driver to minimize body diode conduction and switching losses
Features programmable soft start and monotonic startup into pre-biased loads

DC DC Switching Controllers Applications

High-performance 48V battery automotive systems
ADAS (Advanced Driver Assistance Systems) and HEV/EV power architectures
Industrial point-of-load regulation requiring high input voltage tolerance

DC DC Switching Controllers Procurement Notes

Verify the specific suffix 'RGYR' corresponds to the standard commercial temperature grade and reel packaging configuration. Confirm that the component meets the required AEC-Q100 or industrial standards depending on the final system environment. Ensure compatibility with the intended PCB footprint for the 20-VQFN package before ordering.

DC DC Switching Controllers Selection Notes

Select this controller when designing systems with input voltages exceeding 75V or subject to significant transient spikes. It is suitable for applications requiring precise voltage regulation with low feedback error. Consider the thermal performance of the VQFN package and ensure adequate copper area for heat dissipation during high-current operation.

DC DC Switching Controllers Part Context

This component belongs to the LM514x family of synchronous buck controllers. It shares architectural similarities with the LM5145 but offers extended input voltage capabilities up to 100V. The device integrates essential protection features such as overcurrent protection and thermal shutdown within a compact form factor.