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Diotec Semiconductor

LDI51-4.0EN-AQ

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Recycling Electronic Components

LDI51-4.0EN-AQ - Automotive-Grade Low Dropout Voltage Regulator

The LDI51-4.0EN-AQ from Diotec Semiconductor is a high-performance, automotive-qualified low dropout (LDO) voltage regulator designed for demanding applications requiring stable 4V output. This precision voltage regulator delivers up to 500mA output current with exceptional efficiency and thermal performance, making it ideal for automotive electronics, industrial control systems, and battery-powered devices.

Key Features & Benefits

  • Automotive-Grade Reliability: AEC-Q101 qualified for harsh automotive environments
  • Low Dropout Voltage: Only 0.12V dropout at 100mA ensures efficient power conversion
  • Wide Operating Temperature: -40°C to 125°C (TJ) for extreme conditions
  • Excellent PSRR: 80dB at 1kHz for superior noise rejection
  • Compact Surface Mount Package: SOT-23-5 (SC-74A, SOT-753) saves board space
  • Built-in Protection: Over-temperature protection safeguards your circuit
  • Enable Control: Allows power sequencing and shutdown modes

Applications

This automotive-grade LDO voltage regulator is perfect for:

  • Automotive electronic control units (ECUs)
  • Infotainment and navigation systems
  • Advanced driver-assistance systems (ADAS)
  • Industrial sensors and control circuits
  • Battery-powered portable devices
  • Microcontroller and processor power supplies

Why Choose HQICKEY?

At HQICKEY, we specialize in providing authentic, high-quality semiconductor components with global shipping and warranty support. Every component is sourced directly from authorized distributors to ensure authenticity and reliability.

Related Products & Resources

Looking for power management solutions? Explore our Battery Chargers Collection for complementary power management ICs and charging solutions.

Stay updated with the latest semiconductor industry news, technical articles, and product announcements on our News & Technical Blog.

Order your LDI51-4.0EN-AQ today and experience reliable, automotive-grade voltage regulation for your critical applications!

Product attributes Property Value
Manufacturer Diotec Semiconductor
Product Series
Packaging Cut Tape (CT)|Tape & Reel (TR)
Output Configuration Positive
Output Type Fixed
Number of Regulators 1
Voltage - Input (Max) 15V
Voltage - Output (Min/Fixed) 4V
Voltage - Output (Max) -
Voltage Dropout (Max) 0.12V @ 100mA
Current - Output 500mA
Current - Quiescent (Iq) -
Current - Supply (Max) -
PSRR 80dB (1kHz)
Control Features Enable
Protection Features Over Temperature
Operating Temperature -40°C ~ 125°C (TJ)
Grade Automotive
Qualification AEC-Q101
Mounting Type Surface Mount
Package / Case SC-74A, SOT-753
Supplier Device Package SOT-23-5
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

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