LD49150   Product is in volume production.

1.5 A ultra low dropout voltage regulator

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The LD49150 is a high-bandwidth, low-dropout, 1.5 A voltage regulator, ideal for powering core voltages of low power microprocessors. The LD49150 implements a dual supply configuration, which guarantees a very low output impedance and a very fast transient response. The LD49150 requires a bias input supply and a main input supply, allowing ultra-low input voltages on the main supply rail. The input supply operates from 1.4 V to 5.5 V and the bias supply requires between 3 V and 6 V to work properly. The LD49150 offers fixed output voltages from 0.8 V to 1.8 V and adjustable output voltages starting from 0.8 V. The LD49150 requires a minimum output capacitance for stability, and works optimally with small ceramic capacitors.

Key Features

  • Input voltage range:
    • VI = 1.4 V to 5.5 V
    • VBIAS = 3 V to 6 V
  • Stable with ceramic capacitors
  • ±1.5% initial tolerance
  • Maximum dropout voltage (VI - VO) 200 mV over the operating temperature range
  • Adjustable output voltage starting from 0.8 V
  • Fast transient response (up to 10 MHz bandwidth)
  • Excellent line and load regulation specifications
  • Logic-controlled shutdown option
  • Thermal shutdown and current limit protection
  • Junction temperature range: - 25 °C to 125 °C

Resources

Technical Documentation

Product Specifications
Description Version Size
DS5240 DS5240: 1.5 A ultra low-dropout voltage regulator 4.0 671 KB

Publications and Collaterals

Selection Guides
Description Version Size
Linear and Switching Voltage Regulators Selection Guide 3.0 370 KB
Brochures
Description Version Size
Brochure Power management guide 10.2018 4 MB
Low-dropout (LDO) linear voltage regulators - Quick Reference Guide 2.2 216 KB
Power management for handheld and portable 2.0 1 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
LD49150PT08R PPACK 5 Tape And Reel 0.8 1.5 1.5 Active 0.91 1000 EAR99 CHINA MORE INFO Buy Direct Add to cart DISTRIBUTOR AVAILABILITY
LD49150PT12R PPACK 5 Tape And Reel 1.2 1.5 1.5 Active 0.91 1000 EAR99 CHINA MORE INFO DISTRIBUTOR AVAILABILITY
LD49150PT10R PPACK 5 Tape And Reel 1 1.5 1.5 Active 0.91 1000 EAR99 CHINA MORE INFO Buy Direct 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**
LD49150PT08R ActivePPACK 5IndustrialEcopack2
LD49150PT12R ActivePPACK 5IndustrialEcopack2
LD49150PT10R ActivePPACK 5IndustrialEcopack2 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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