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STMICROELECTRONICS LK112SM33TR Low-Dropout Voltage Regulator

The LK112S is a low-dropout linear regulator featuring a shutdown function, internal thermal shutdown, and low output noise. It supports output currents up to 200 mA with very low quiescent current and wide input voltage range. The device offers adjustable output voltages with a tolerance of ±2% at 25°C, internal current and thermal limiting, and an external noise bypass pin to decrease output noise to 30 µVrms. Its compact SOT23-5L package makes it ideal for portable and automotive applications requiring high efficiency and stable output performance.

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Source:Newark
Part No:LK112SM33TR
Stock:5584
Inv Date:06-11-2026
Price: Unit price: $0.948
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Source:DigiKey
Part No:LK112SM33TR
Stock:7410
Inv Date:06-11-2026
Price: Unit price: $0.92
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Part No:LK112SM33TR
Stock:5578
Inv Date:06-12-2026
Price: Unit price: $0.92
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Part No:LK112SM33TR
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Inv Date:06-11-2026
Price: Unit price: $0.85
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Part No:LK112SM33TR
Stock:0
Inv Date:06-11-2026
Price: Unit price: $0.38
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Part No:LK112SM33TR
Stock:27000
Inv Date:06-12-2026
Price: N/A
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STMICROELECTRONICS LK112SM33TR Low-Dropout Voltage Regulator Specifications:

  • Output Current: Up to 200 mA
  • Dropout Voltage: Max. 500 mV at 200 mA
  • Quiescent Current: 0.1 µA in OFF, Max. 250 µA in ON
  • Output Noise: Typ. 30 µV at 60 mA, 10 Hz to 80 kHz
  • Input Voltage Range: Vout + 0.5 V to 14 V or 2.5 V to 14 V
  • Output Voltage Tolerance: ±2% at 25°C
  • Package: SOT23-5L
  • Thermal Shutdown: Yes, below 150°C
  • Current and Thermal Limit: Internal
  • Noise Bypass Pin: Yes, for noise reduction
  • Shutdown Control: TTL or CMOS logic levels
  • Output Voltage Options: 1.8V, 3.3V, 5.0V
  • Device is full production and compliant with environmental standards

Buy the STMicroelectronics Series LK112 Low-Dropout Regulator: LK112SM33TR

Purchase the STMicroelectronics LK112SM33TR online today. This highly efficient, low-noise regulator provides a stable power source supporting up to 200mA current with very low quiescent current. Its wide input voltage range, thermal management, and noise bypass pin make it ideal for portable, automotive, and space-constrained applications. The device features internal thermal shutdown and current limit protections, ensuring reliable, long-term operation. Available in a compact SOT23-5 package, the LK112S ensures high-performance regulation for your electronic projects and industrial systems.

Get STMicroelectronics LK112SM33TR today—built for precision, low noise operation, and long-lasting durability in portable and automotive applications.

Frequently Asked Questions

Where can I buy STMICROELECTRONICS LK112SM33TR?

You can click on the BUY or RFQ button to purchase LK112SM33TR from an authorized STMICROELECTRONICS distributor.

How do I troubleshoot issues or seek technical support for part LK112SM33TR?

You can download the LK112SM33TR datasheet or visit the STMICROELECTRONICS website for support.

Who is the manufacturer of LK112SM33TR?

STMICROELECTRONICS

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