LD59150   Product is in volume production.

1.5A Low Dropout Linear Regulator with Programmable Soft-Start

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The LD59150 is a 1.5 A LDO regulator, designed for being used in various environments.

The NMOS topology allows RDS(on) of the pass-element to be reduced, which results in a very small dropout voltage even with very low input supply voltage.

Output voltage can be adjusted from 0.8 to 3.6 V, by means of an external resistor divider.

The programmable soft-start circuit offers the possibility to control the inrush current at startup providing a monotonic supply voltage to the load.

The LD59150 has enable pin to turn on/off (EN) the regulator and Power Good to monitor the regulated output voltage (PG).

Combination of both can be used to set a desired power sequence in case of multiple regulated rails.

The LD59150 embeds protection functions, such as: current limit and thermal shutdown.

Key Features

  • Designed for automotive applications
  • Dual supply pins
    • VIN: 0.8 V to 5.5 V
    • VBIAS: 2.7 V to 5.5 V
  • VOUT range: 0.8 V to 3.6 V
  • Ultra low-dropout: 65 mV typ. (125 mV max.) at 1.5 A
  • High VOUT accuracy
    • 0.5% typ. at Tamb
    • 2% max.
  • Power Good function
  • Programmable soft-start
  • Thermal shutdown
  • Current limitation circuit
  • Adjustable output voltage
  • Stable with low ESR output capacitor (> 2.2 µF)
  • Available in DFN10 3 x 3 mm package with wettable flanks
  • Operating temperature range: - 40 °C + 125 °C

Resources

Technical Documentation

Product Specifications
Description Version Size
DS12455 DS12455: 1.5 A low-dropout linear regulator with programmable soft-start 3.0 1.33 MB

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
LD59150PURY VFQFPN 3X3X0.85 10L PITCH 0.50 A Tape And Reel - 0.5 1.5 Active 0.8 1000 EAR99 - MORE INFO Free 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**
LD59150PURY ActiveVFQFPN 3X3X0.85 10L PITCH 0.50 AAutomotiveEcopack2 0 0
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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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