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STMICROELECTRONICS LDS3985M18R Voltage Regulator

The LDS3985 is a low dropout, low noise, 300 mA voltage regulator designed for low power applications and battery-powered systems. It operates from input voltages between 2.5 V and 6 V, providing stable output voltages from 1.25 V to 5 V in 100 mV steps. Featuring ultra-low dropout (150 mV at 300 mA), low quiescent current (85 μA at no load), and fast turn-on time (approx. 240 μs), it supports automotive-grade packages and external shutdown control, ideal for mobile devices, wireless systems, and portable electronics.

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Source:Newark
Part No:LDS3985M18R
Stock:3412
Inv Date:06-12-2026
Price: Unit price: $0.896
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Source:DigiKey
Part No:LDS3985M18R
Stock:3000
Inv Date:06-12-2026
Price: Unit price: $0.40467
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Part No:LDS3985M18R
Stock:4600
Inv Date:06-12-2026
Price: Unit price: $0.61
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Part No:LDS3985M18R
Stock:0
Inv Date:06-12-2026
Price: Unit price: $0.32
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Part No:LDS3985M18R
Stock:25
Inv Date:06-12-2026
Price: N/A
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STMICROELECTRONICS LDS3985M18R Voltage Regulator Specifications:

  • Input Voltage Range: 2.5 V to 6 V
  • Output Voltage: Fixed from 1.25 V to 5 V in 100 mV steps
  • Maximum Output Current: 300 mA
  • Dropout Voltage: 150 mV at 300 mA
  • Quiescent Current: 85 μA at no load, 200 μA at 300 mA
  • Output Noise: 30 μV rms over 10 Hz to 100 kHz
  • Line Regulation: 0.19% typical from 4.7 V to 5 V
  • Load Regulation: 0.005% to 0.01%
  • Turn-On Time: Approx. 240 μs
  • Temperature Range: -40°C to 125°C (standard), -40°C to 85°C (automotive grade)
  • Package Types: DFN6 (3 x 3 mm), SOT23-6L
  • Features: Internal current and thermal limit, logic-controlled shutdown, stable with ceramic and tantalum capacitors

Buy the STMicroelectronics LDS3985 – Reliable Voltage Regulator for Industrial Applications

Purchase the LDS3985 voltage regulator now and experience dependable power management for your low power and portable electronic projects. Engineered for stability, low dropout, and energy efficiency, this regulator ensures your devices operate smoothly across a wide temperature range. Whether for mobile communication, wearable devices, or automotive systems, the LDS3985 provides exceptional performance with features such as fast startup, internal thermal protection, and compatibility with ceramic and tantalum capacitors. Buy online today and enhance your electronic designs with this high-quality regulator.

Get STMicroelectronics LDS3985 today—built for precision, low noise, and long-lasting durability in battery-powered systems and industrial applications.

Frequently Asked Questions

Where can I buy STMICROELECTRONICS LDS3985M18R?

You can click on the BUY or RFQ button to purchase LDS3985M18R from an authorized STMICROELECTRONICS distributor.

How do I troubleshoot issues or seek technical support for part LDS3985M18R?

You can download the LDS3985M18R datasheet or visit the STMICROELECTRONICS website for support.

Who is the manufacturer of LDS3985M18R?

STMICROELECTRONICS

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