LM74502QDDFRQ1

$1.73

Description：AUTOMOTIVE REVERSE POLARITY PROT
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:d0852d28b8a8 Category: OR Controllers, Ideal Diodes Brand: Texas Instruments

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Product introduction

Product Detailed Parameters

Description：AUTOMOTIVE REVERSE POLARITY PROT
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT)
Type：Source Selector Switch
FET Type：N-Channel
Ratio - Input:Output：1:01
Internal Switch(s)：No
Delay Time - ON：75 µs
Delay Time - OFF：2 µs
Current - Output (Max)：2A
Current - Supply：45 µA
Voltage - Supply：4V ~ 60V
Applications：-
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：SOT-23-8 Thin, TSOT-23-8
Supplier Device Package：TSOT-23-8
Grade：Automotive
Qualification：-

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LM74502QDDFRQ1

Overview

The LM74502QDDFRQ1 is an automotive-grade hot-swap voltage controller manufactured by Texas Instruments. It operates within a supply voltage range of 3.2 V to 65 V and features a single channel with a current limit of 1 A. The device draws a typical operating supply current of 45 uA. It supports surface-mount installation in an SOT-23-8 package and functions reliably across a temperature range of -40 C to +125 C.

Feature Summary

Provides reverse polarity protection for automotive applications
Integrates high-side switch control via external N-channel MOSFET
Includes adjustable soft-start and overvoltage protection

Applications

Automotive reverse polarity protection
Hot-swap voltage control
Ideal diode emulation

Procurement Notes

Verify the Q suffix indicates automotive qualification and the DDFRQ1 suffix specifies the SOT-23-8 thin package with tape-and-reel packaging. Confirm RoHS compliance status through official documentation. Ensure the ordering part number matches the exact suffix requirements for your specific application needs.

Selection Notes

Select this component when designing circuits requiring robust reverse polarity protection and hot-swap capabilities in automotive environments. Consider the 1 A current limit and 65 V maximum voltage rating against system requirements. Evaluate the low quiescent current for power-sensitive designs.

Part Context

This part belongs to the LM74502H series of ideal diode controllers from Texas Instruments. It is designed to drive external back-to-back N-channel MOSFETs to simulate ideal diode behavior. The device integrates power path control and overvoltage protection mechanisms for reliable operation.