# LM74930QRGERQ1 (Component)
## Description
OR Controller N+1 ORing Controller N-Channel 1:1 24-VQFN (4x4)
The LM74930-Q1 ideal diode controller drives and
controls external back to back N-Channel MOSFETs
to emulate an ideal diode rectifier and power path ON
and OFF control with over current and overvoltage
protection. The wide input supply of 4 V to 65
V allows protection and control of 12-V and 24-V
automotive battery powered ECUs. The device can
withstand and protect the loads from negative supply
voltages down to –65 V. An integrated high side
gate control (HGATE) drives the first MOSFET in the
power path. The device allows load disconnect (ON
and OFF control) in case of overcurrent, overvoltage
and undervoltage event using HGATE control while
ideal diode controller (DGATE) drives a second
MOSFET to replace a Schottky diode for input reverse
polarity protection and output voltage holdup by
blocking the reverse current from output to input. The
device has integrated current sense amplifier which
provides with an adjustable overcurrent and short
circuit protection with circuit breaker functionality.
The device features an adjustable overvoltage and
undervoltage protection feature to protect against
supply transients. LM74930-Q1 features MODE pin
which can be used to selectively enable or disable
reverse current blocking functionality.
Features
• AEC-Q100 qualified for automotive applications
– Device temperature grade 1:
–40°C to +125°C ambient operating
temperature range
• 4-V to 65-V input range
• Reverse input protection down to –65 V
• Drives external back-to-back N-Channel MOSFETs
in common source configuration
• Ideal diode operation with 10.5-mV A to C forward
voltage drop regulation
• Low reverse detection threshold (–10.5 mV) with
fast DGATE turn-off response (0.5 µs)
• 18-mA peak gate (DGATE) turn on current
• 2.6-A peak DGATE turn-off current
• Adjustable overcurrent and short circuit protection
• Analog current monitor output with 10% accuracy
(IMON)
• Adjustable overvoltage and undervoltage
protection
• Low 2.5-μA shutdown current (EN=Low)
• MODE pin to allow bi-directional current flow
(MODE=Low)
• Meets automotive ISO7637 transient requirements
with a suitable TVS diode
• Available in space saving 24-pin VQFN package
2 Applications
• 12-V / 24-V automotive reverse battery protection
• Industrial transport
• Redundant power supply ORing
#IdealDiodeController #SurgeStopper #CircuitBreaker #PowerPathProtection #AutomotiveElectronics #AECQ100 #ReversePolarityProtection #OvercurrentProtection #TexasInstruments #PMIC
## Component Details
- **Owner:** silicon-yard
- **Created:** 6/29/2026
- **Last Updated:** 6/29/2026
- **Visibility:** Public
- **Manufacturer Part Number:** LM74930QRGERQ1
- **Package or Case Code:** 24-VQFN
- **Implementation Details:** Official datasheet: https://www.ti.com/lit/ds/symlink/lm74930-q1.pdf
- **Part Type:** Integrated Circuit
- **Datasheet URL:** https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/d79d40ef82ddc1f27b469721a0ff10da6d4511012f5bbad0629a2b7724b0d87a.pdf
- **Manufacturer Name:** Texas Instruments
- **License:** https://creativecommons.org/licenses/by/4.0/
- **Symbol Style:** parametric-v1
- **Used in:** 13 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/lm74930qrgerq1/texas-instruments.html?utm_currency=USD®ion=nac) | N/A | N/A |
| [Mouser](https://www.mouser.com/en/ProductDetail/Texas-Instruments/LM74930QRGERQ1?qs=Z%252BL2brAPG1KfyWCDNdSQWA%3D%3D) | $5.79 | 3.4K |
- **Part Type:** Integrated Circuits
- **Sub-Type:** Logic
- **Manufacturer:** Texas Instruments
- **MPN:** LM74930QRGERQ1
- **Mount Type:** Reverse
- **Package / Case Code:** 24-VQFN
- **Pin Count:** 25
- **Logic Function:** AND
- **Compliance:** AEC-Q100
## Pins
| Pin | Name | Type |
|-----|------|------|
| 1 | DGATE | |
| 2 | A | |
| 3 | SW | |
| 4 | UVLO | |
| 5 | OV | |
| 6 | EN | |
| 7 | MODE | |
| 8 | N.C_1 | |
| 9 | TMR | |
| 10 | IMON | |
| 11 | ILIM | |
| 12 | ~FLT | |
| 13 | GND | |
| 14 | HGATE | |
| 15 | OUT | |
| 16 | OVCLAMP | |
| 17 | N.C_2 | |
| 18 | ISCP | |
| 19 | CS- | |
| 20 | CS+ | |
| 21 | N.C_3 | |
| 22 | VS | |
| 23 | CAP | |
| 24 | C | |
| 25 | RTN | |
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