250 mA ultra-low noise LDO

The LDLN025 is a 250 mA low-dropout voltage regulator, able to work with an input voltage range from 1.5 V to 5.5 V.

The typical dropout voltage at 250 mA load is 120 mV.

The very low quiescent current, which is just 12 μA at no-load, extends battery-life of applications requiring very long standby time.

Thanks to its ultra low noise value and high PSRR, the LDLN025 provides a very clean output, suitable for ultra-sensitive loads. It is stable with ceramic capacitors.

The enable logic control function puts the device into shutdown mode allowing a total current consumption lower than 1 μA.

The device also includes short-circuit and thermal protection.

Typical applications are noise sensitive loads such as ADC, VCO in mobile phones and tablets, wireless LAN devices. The LDLN025 is designed to keep the quiescent current under control and at a low value also during dropout operation, extending the operating time of battery-powered devices.

Several small package options are available.

Key Features

  • Ultra low output noise: 6.5 μVRMS
  • Operating input voltage range: 1.5 V to 5.5 V
  • Output current up to 250 mA
  • Very low quiescent current: 12 μA at no-load
  • Controlled Iq in dropout condition
  • Very low-dropout voltage: 250 mV at 250 mA
  • Very high PSRR: 80 dB@100 Hz, 60 dB@100 kHz
  • Output voltage accuracy: 2% across line, load and temperature
  • Output voltage versions: from 1 V to 5 V, with 50 mV step
  • Logic-controlled electronic shutdown
  • Output discharge feature
  • Internal soft-start
  • Overcurrent and thermal protections
  • Temperature range: from -40 °C to +125 °C
  • Packages: Flip-Chip4, DFN4-1x1

Design

Technical Documentation

Product Specifications
Description Version Size
DS11756 DS11756: 250 mA ultra low noise LDO 4.0 1 MB

Publications and Collaterals

Brochures
Description Version Size
Brochure Power management guide 05.2016 4 MB
Power management for handheld and portable 1.0 1 MB

Tools and Software

Evaluation Tools
Solution Evaluation Tools
Support & Community


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 (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
LDLN025J33R Flip-Chip 4 Tape And Reel 3.3 2 0.25 Active 0.15 1000 NEC EAR99 - MORE INFO Get Sample Add to cart DISTRIBUTOR AVAILABILITY
LDLN025J25R Flip-Chip 4 Tape And Reel 2.5 2 0.25 Active 0.15 1000 NEC EAR99 - MORE INFO Get Sample Add to cart DISTRIBUTOR AVAILABILITY
LDLN025PU18R DFN4 1x1 Tape And Reel 1.8 2 0.25 Active 0.15 1000 NEC EAR99 - MORE INFO Get Sample Add to cart DISTRIBUTOR AVAILABILITY
LDLN025J32R Flip-Chip 4 Tape And Reel - 2 0.25 Active 0.15 1000 NEC EAR99 - MORE INFO Get Sample Add to cart DISTRIBUTOR AVAILABILITY
LDLN025PU29R DFN4 1x1 Tape And Reel 2.9 2 0.25 Active 0.15 1000 NEC EAR99 PHILIPPINES MORE INFO
LDLN025J18R Flip-Chip 4 Tape And Reel 1.8 2 0.25 Active 0.15 1000 NEC EAR99 - MORE INFO Get Sample Add to cart DISTRIBUTOR AVAILABILITY
LDLN025J275R Flip-Chip 4 Tape And Reel 2.75 2 0.25 Preview 0.15 1000 NEC EAR99 - MORE INFO
LDLN025J50R Flip-Chip 4 Tape And Reel - 2 0.25 Preview 0.15 1000 NEC EAR99 - MORE INFO
LDLN025PU32R DFN4 1x1 Tape And Reel 3.2 2 0.25 Active 0.15 1000 NEC EAR99 PHILIPPINES MORE INFO Get Sample Add to cart DISTRIBUTOR AVAILABILITY
LDLN025PU33R DFN4 1x1 Tape And Reel 3.2 2 0.25 Active 0.15 1000 NEC EAR99 - MORE INFO Get Sample Add to cart DISTRIBUTOR AVAILABILITY
LDLN025PU50R DFN4 1x1 Tape And Reel 5 2 0.25 Active 0.15 1000 NEC EAR99 PHILIPPINES MORE INFO
LDLN025J12R Flip-Chip 4 Tape And Reel - 2 0.25 Preview 0.15 1000 NEC EAR99 - MORE INFO
LDLN025PU30R DFN4 1x1 Tape And Reel 3 2 0.25 Active 0.15 1000 NEC EAR99 - MORE INFO Get Sample Add to cart DISTRIBUTOR AVAILABILITY
LDLN025PU25R DFN4 1x1 Tape And Reel - 2 0.25 Active 0.15 1000 NEC EAR99 - MORE INFO Get Sample Add to cart DISTRIBUTOR AVAILABILITY
LDLN025PU12R DFN4 1x1 Tape And Reel - 2 0.25 Preview - - NEC EAR99 - MORE INFO
LDLN025J2925R Flip-Chip 4 Tape And Reel - 2 0.25 Active 0.15 1000 NEC EAR99 - MORE INFO Get Sample Add to cart DISTRIBUTOR AVAILABILITY
LDLN025J30R Flip-Chip 4 Tape And Reel 3 2 0.25 Preview 0.15 1000 NEC EAR99 - MORE INFO
LDLN025PU28R DFN4 1x1 Tape And Reel 2.8 2 0.25 Active 0.15 1000 NEC EAR99 - MORE INFO Get Sample Add to cart DISTRIBUTOR AVAILABILITY
LDLN025J285R Flip-Chip 4 Tape And Reel 2.85 2 0.25 Target 0.15 1000 NEC EAR99 - MORE INFO
LDLN025PU275R DFN4 1x1 Tape And Reel 5 2 0.25 Active 0.15 1000 NEC EAR99 - MORE INFO Get Sample Add to cart DISTRIBUTOR AVAILABILITY
LDLN025J28R Flip-Chip 4 Tape And Reel - 2 0.25 Active 0.15 1000 NEC EAR99 - MORE INFO Get Sample Add to cart DISTRIBUTOR AVAILABILITY
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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**
LDLN025J33R ActiveFlip-Chip 4IndustrialN/A
LDLN025J25R ActiveFlip-Chip 4IndustrialN/A
LDLN025PU18R ActiveDFN4 1x1IndustrialEcopack2
LDLN025J32R ActiveFlip-Chip 4IndustrialN/A
LDLN025PU29R ActiveDFN4 1x1IndustrialEcopack2
LDLN025J18R ActiveFlip-Chip 4IndustrialN/A
LDLN025J275R PreviewFlip-Chip 4IndustrialN/A
LDLN025J50R PreviewFlip-Chip 4IndustrialN/A
LDLN025PU32R ActiveDFN4 1x1IndustrialEcopack2
LDLN025PU33R ActiveDFN4 1x1IndustrialEcopack2
LDLN025PU50R ActiveDFN4 1x1IndustrialEcopack2
LDLN025J12R PreviewFlip-Chip 4IndustrialN/A
LDLN025PU30R ActiveDFN4 1x1IndustrialEcopack2
LDLN025PU25R ActiveDFN4 1x1IndustrialEcopack2
LDLN025PU12R PreviewDFN4 1x1IndustrialEcopack2
LDLN025J2925R ActiveFlip-Chip 4IndustrialN/A 0 0
LDLN025J30R PreviewFlip-Chip 4IndustrialN/A
LDLN025PU28R ActiveDFN4 1x1IndustrialEcopack2
LDLN025J285R TargetFlip-Chip 4IndustrialN/A
LDLN025PU275R ActiveDFN4 1x1IndustrialEcopack2 0 0
LDLN025J28R ActiveFlip-Chip 4IndustrialN/A
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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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