myMectronic
myMectronic

A Premier B2B Part Search

STMICROELECTRONICS LDK120PU18R Low Dropout Regulator

The LDK120 is a low dropout regulator designed for applications requiring a stable 200 mA output with low noise and quiescent current. It operates from 1.9 to 5.5 V input, featuring very low dropout voltage (~100 mV at 100 mA), internal thermal and current limits, and optional external bypass capacitor stabilization. Its small form factor (DFN6, SOT23-5L, SOT323-5L packages) makes it ideal for battery-powered devices like mobile phones, PDAs, and digital cameras. The device includes a logic-controlled shutdown to minimize power consumption in standby mode, within temperature range -40°C to 125°C.

Authorized Distributors
Source:Newark
Part No:LDK120PU18R
Stock:2655
Inv Date:06-11-2026
Price: Unit price: $0.361
Buy/RFQ:
Source:DigiKey
Part No:LDK120PU18R
Stock:0
Inv Date:06-11-2026
Price: Unit price: $0.14502
Buy/RFQ:
Part No:LDK120PU18R
Stock:1305
Inv Date:06-12-2026
Price: Unit price: $0.34
Buy/RFQ:
Part No:LDK120PU18R
Stock:0
Inv Date:06-11-2026
Price: Unit price: $0.126
Buy/RFQ:
Part No:LDK120PU18R
Stock:1690
Inv Date:06-12-2026
Price: N/A
Buy/RFQ:

STMICROELECTRONICS LDK120PU18R Low Dropout Regulator Specifications:

  • Input Voltage Range: 1.9 to 5.5 V
  • Output Current: 200 mA (guaranteed)
  • Dropout Voltage: ~100 mV at 100 mA load
  • Output Voltage Tolerance: ±2.0% at 25°C
  • Fixed Output Voltages Available: 0.8 V to 3.5 V in 100 mV steps
  • Adjustable Output Voltage Range: 0.8 V to Vin - Vdrop
  • Quiescent Current: Max. 100 pA in OFF mode, typical low noise
  • Thermal and Current Overcurrent Protection
  • Operation Temperature: -40°C to 125°C
  • Capacitor Compatibility: Ceramic capacitor ≥ 1 µF
  • Packages: SOT23-5L, SOT323-5L, DFN6 (1.2 x 1.3 mm)

Buy the Buy STMicroelectronics LDK120 Part Number LDK120PU18R Online

Order the STMicroelectronics LDK120PU18R today to ensure high efficiency, low noise, and reliable power regulation for battery-powered applications. Its compact design, drop-out voltage of approximately 100 mV, and low quiescent current make it perfect for portable devices like smartphones, digital cameras, and PDAs. The regulator features thermal and current limits, along with a shutdown mode for ultra-low power standby operation. Simplify your design by choosing this high-quality, fixed voltage LDO in small packages with ceramic capacitor stabilization.

Get STMicroelectronics LDK120PU18R today—built for precision and long-lasting durability in portable electronics.

Frequently Asked Questions

Where can I buy STMICROELECTRONICS LDK120PU18R?

You can click on the BUY or RFQ button to purchase LDK120PU18R from an authorized STMICROELECTRONICS distributor.

How do I troubleshoot issues or seek technical support for part LDK120PU18R?

You can download the LDK120PU18R datasheet or visit the STMICROELECTRONICS website for support.

Who is the manufacturer of LDK120PU18R?

STMICROELECTRONICS

STMICROELECTRONICS Part List

Browse and search other STMICROELECTRONICS parts, locate datasheets and stock

Sponsored by