LDLN050   Product is under characterization. Limited Engineering samples available.

500 mA, high performance low dropout linear regulator

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The LDLN050 is a 500 mA LDO regulator, designed to be used in several environments. The LDLN050 has a very low-resistance pass element (PMOS) that is even very fast during the turn-on.

Thanks to its low-noise design, the LDLN050 can be used to supply noise sensitive circuits such as sensors, MCUs and wireless ICs in automotive and industrial applications.

The LDO low current consumption (typically 48 µA) is also used on battery-supplied applications.

On the adjustable version, the output voltage can be set to any desired value between 1.25 V and 6 V. Fixed voltage versions, between 1.0 V and 4.3 V (with 0.1 V step) can be provided upon request.

On the fixed voltage versions only, an external capacitor can be connected to CNR pin to further reduce the noise on the regulated output voltage.

The LDLN050 is available in DFN8 (3 x 3 mm) with wettable flank package and it is automotive grade qualified according to AEC-Q100 level 1.

Key Features

  • Input voltage range: 2.7 V to 6.5 V
  • Very low output voltage noise: 13 µVRMS/VOUT
  • Low quiescent current: 48 µA typical
  • 500 mA guaranteed output current
  • Fast start-up time: 50 µs
  • High PSRR: 65 dB at 100 Hz
  • AEC-Q100 grade 1 qualified
  • -40 °C to 125 °C ambient operative temperature range
  • Very low dropout: 190 mV at max. IOUT
  • Adjustable (from 1.25 V to 6 V) or fixed output voltage on request (from 1.0 V to 4.3 V)
  • Stable with low ESR capacitor: min. 2 µF
  • Current limit and thermal protections
  • DFN8 (3 x 3 mm) wettable flank package

Resources

Technical Documentation

Product Specifications
Description Version Size
DS12809 DS12809: 500 mA, high performance low dropout linear regulator 1.0 733.3 KB

Publications and Collaterals

Selection Guides
Description Version Size
Linear and Switching Voltage Regulators Selection Guide 3.0 370.88 KB
Brochures
Description Version Size
Brochure Power management guide 10.2018 4.42 MB
Low-dropout (LDO) linear voltage regulators - Quick Reference Guide 2.0 216.23 KB
Power management for handheld and portable 2.0 1.09 MB
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Sample & Buy

Part Number Package Packing Type Output Voltage (V) (nom) Output Tolerance (typ) Output Current (A) (nom) Marketing Status Unit Price (US$) * Quantity ECCN (US) Country of Origin More info Order from ST Order from Distributors
LDLN050PU33RY VFDFPN 8L 3X3 0.85 PITCH 0.65 Tape And Reel - - 0.5 Evaluation 0.56 1000 EAR99 - MORE INFO No availability reported, please contact our Sales office
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(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
LDLN050PU33RY EvaluationVFDFPN 8L 3X3 0.85 PITCH 0.65AutomotiveEcopack2
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(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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