# LM74700QDDFRQ1 (Component) ## Description OR Controller N+1 ORing Controller N-Channel 1:1 TSOT-23-8 The LM74700QDDFRQ1 is an automotive-qualified ideal diode controller designed to provide reverse polarity protection, reverse current blocking, and input power path management in low-voltage DC power systems. The device controls an external N-channel MOSFET to emulate an ideal diode with very low forward voltage drop and reduced power dissipation compared to conventional Schottky diodes. It is optimized for automotive and industrial applications requiring robust protection against negative supply voltages, load dump conditions, and reverse battery events. The controller supports wide input voltage operation and integrates fast response circuitry for fault handling and transient protection. The device is suitable for power OR-ing, hot-swap, redundant power supply systems, and battery-connected applications where efficiency, reliability, and thermal performance are critical. Engineering Specification Device Type Automotive ideal diode controller with reverse battery and reverse current protection Qualification Standard AEC-Q100 qualified for automotive applications Control Topology External N-channel MOSFET controller for ideal diode operation Input Voltage Range Supports wide automotive and industrial supply voltage ranges Reverse Polarity Protection Provides protection against negative input voltage conditions and reverse battery connection Reverse Current Blocking Actively prevents reverse current flow during output-to-input fault conditions Forward Voltage Drop Low conduction losses through external MOSFET control for high-efficiency power delivery Transient Protection Capable of handling automotive transient events including load dump conditions Gate Drive Control Integrated gate driver optimized for fast MOSFET switching and protection response Power Path Management Supports power OR-ing and redundant supply architectures Fault Response Fast turn-off during reverse current and fault events Current Consumption Low operating quiescent current suitable for always-on systems Thermal Performance Designed for efficient thermal operation with external MOSFET-based power dissipation Operating Temperature Range Automotive-grade extended temperature operation Package Type Small-outline automotive package suitable for compact PCB layouts #commonpartsLibrary #integratedcircuit #powermanagement #orcontroller ## Component Details - **Owner:** adrian95 - **Created:** 9/20/2025 - **Last Updated:** 5/19/2026 - **Visibility:** Public - **License:** https://creativecommons.org/licenses/by/4.0/ - **Symbol Style:** parametric-v1 - **Datasheet URL:** https://www.ti.com/lit/ds/symlink/lm74700-q1.pdf?ts=1609880384188&ref_url=https%253A%252F%252Fwww.ti.com%252Fstore%252Fti%252Fen%252Fp%252Fproduct%252F%253Fp%253DLM74700QDBVRQ1%2526HQS%253DOCB-tistore-invf-storeinv-invf-store-findchips-wwe - **Manufacturer Name:** Texas Instruments - **Part Type:** Integrated Circuit - **Manufacturer Part Number:** LM74700QDDFRQ1 - **Package or Case Code:** SOT65P280X110-8N - **Used in:** 119 projects ## Distributor Pricing (qty 1) *Pricing shown for quantity 1. For price breaks and other quantities, open in Flux.* | Distributor | Unit Price (qty 1) | Stock | |------------|--------------------|-------| | [Arrow](https://www.arrow.com/en/products/lm74700qddfrq1/texas-instruments.html?utm_currency=USD&region=nac) | N/A | N/A | | [LCSC](https://www.lcsc.com/product-detail/C3236229.html) | $2.0008 | 50 | | [Mouser](https://www.mouser.com/ProductDetail/Texas-Instruments/LM74700QDDFRQ1?qs=eP2BKZSCXI5rqUa6Bh4vxQ%3D%3D) | $1.95 | 11K | - **Part Type:** Integrated Circuits - **Sub-Type:** Logic - **Manufacturer:** Texas Instruments - **MPN:** LM74700QDDFRQ1 - **Mount Type:** Reverse - **Package / Case Code:** TSOT - **Pin Count:** 8 - **Logic Function:** AND - **Compliance:** AEC-Q100 ## Pins | Pin | Name | Type | |-----|------|------| | 1 | EN | | | 2 | GND | | | 3 | N.C_1 | | | 4 | VCAP | | | 5 | ANODE | | | 6 | GATE | | | 7 | N.C_2 | | | 8 | CATHODE | | --- *Generated from [https://www.flux.ai/adrian95/lm74700qddfrq1~2rv](https://www.flux.ai/adrian95/lm74700qddfrq1~2rv)*