LD1085V50
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STMicroelectronics LD1085V50

Manufacturer No:
LD1085V50
Manufacturer:
STMicroelectronics
Package:
Tube
Description:
IC REG LINEAR 5V 3A TO220AB
Delivery:
Payment:
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Product Introduction

Overview

The LD1085V50 is a low drop voltage regulator produced by STMicroelectronics. This regulator is capable of providing up to 3 A of output current and is available in both adjustable and fixed output voltage configurations. It is designed to offer improved performance over older 3-terminal adjustable regulators, with a guaranteed dropout voltage of 1.2 V at maximum output current, decreasing at lower loads. The device is pin-to-pin compatible with standard adjustable voltage regulators and features internal power and thermal limiting, ensuring reliable operation over a wide temperature range of -40°C to 125°C.

Key Specifications

Parameter Value Unit
Output Current Up to 3 A A
Dropout Voltage 1.3 V (typical at 3 A) V
Output Voltage Tolerance ± 1% at 25 °C, ± 2% in full temperature range %
Operating Temperature Range -40 °C to 125 °C °C
Package Types TO-220, TO-220FP, D²PAK, D²PAK/A
Quiescent Current 5 to 10 mA mA
Short-Circuit Current 3.2 to 4.5 A (VI - VO = 5 V) A
Thermal Resistance Junction-Case 3 to 5 °C/W (depending on package) °C/W
Thermal Resistance Junction-Ambient 50 to 62.5 °C/W (depending on package) °C/W

Key Features

  • Low Dropout Voltage: Guaranteed maximum dropout voltage of 1.2 V at 3 A, decreasing at lower loads.
  • Adjustable and Fixed Output Voltage: Available in fixed output voltages of 1.8 V, 2.5 V, 3.3 V, and 5 V, and adjustable configurations.
  • High Output Current: Capable of providing up to 3 A of output current.
  • Tight Output Voltage Tolerance: ± 1% at 25 °C and ± 2% in the full temperature range.
  • Internal Power and Thermal Limiting: Ensures reliable operation and prevents overheating.
  • Wide Operating Temperature Range: Operates from -40 °C to 125 °C.
  • Pin-to-Pin Compatibility: Compatible with older 3-terminal adjustable regulators.
  • Low Quiescent Current: Quiescent current flows into the load, increasing efficiency.
  • Minimal Capacitance Requirement: Only a 10 µF minimum capacitor is needed for stability.

Applications

The LD1085V50 is suitable for a variety of applications requiring high current and low dropout voltage, including:

  • Automotive Systems: Due to its wide operating temperature range and robust design.
  • Industrial Power Supplies: For applications needing reliable and efficient voltage regulation.
  • Consumer Electronics: Where high current and low dropout voltage are critical.
  • Telecommunication Equipment: For powering various components in telecom systems.

Q & A

  1. What is the maximum output current of the LD1085V50?

    The LD1085V50 can provide up to 3 A of output current.

  2. What are the available fixed output voltages for the LD1085V50?

    The fixed output voltages available are 1.8 V, 2.5 V, 3.3 V, and 5 V.

  3. What is the typical dropout voltage of the LD1085V50 at 3 A output current?

    The typical dropout voltage is 1.3 V at 3 A output current.

  4. What is the operating temperature range of the LD1085V50?

    The operating temperature range is from -40 °C to 125 °C.

  5. What packages are available for the LD1085V50?

    The device is available in TO-220, TO-220FP, D²PAK, and D²PAK/A packages.

  6. What is the quiescent current of the LD1085V50?

    The quiescent current is between 5 mA and 10 mA.

  7. Is the LD1085V50 RoHS compliant?

    Yes, the LD1085V50 is RoHS compliant and comes in Ecopack2 packaging.

  8. What is the minimum capacitance required for stability?

    A minimum of 10 µF capacitance is required for stability.

  9. Does the LD1085V50 have internal power and thermal limiting?

    Yes, the device has internal power and thermal limiting to ensure reliable operation.

  10. Is the LD1085V50 pin-to-pin compatible with older 3-terminal adjustable regulators?

    Yes, it is pin-to-pin compatible with older 3-terminal adjustable regulators.

Product Attributes

Output Configuration:Positive
Output Type:Fixed
Number of Regulators:1
Voltage - Input (Max):30V
Voltage - Output (Min/Fixed):5V
Voltage - Output (Max):- 
Voltage Dropout (Max):1.5V @ 3A
Current - Output:3A
Current - Quiescent (Iq):10 mA
Current - Supply (Max):- 
PSRR:72dB (120Hz)
Control Features:- 
Protection Features:Over Current, Over Temperature
Operating Temperature:-40°C ~ 125°C
Mounting Type:Through Hole
Package / Case:TO-220-3
Supplier Device Package:TO-220
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Similar Products

Part Number LD1085V50 LD1086V50 LD1084V50
Manufacturer STMicroelectronics STMicroelectronics STMicroelectronics
Product Status Active Obsolete Obsolete
Output Configuration Positive Positive Positive
Output Type Fixed Fixed Fixed
Number of Regulators 1 1 1
Voltage - Input (Max) 30V 30V 30V
Voltage - Output (Min/Fixed) 5V 5V 5V
Voltage - Output (Max) - - -
Voltage Dropout (Max) 1.5V @ 3A 1.5V @ 1.5A 1.5V @ 5A
Current - Output 3A 1.5A 5A
Current - Quiescent (Iq) 10 mA 10 mA 10 mA
Current - Supply (Max) - - -
PSRR 72dB (120Hz) 75dB (120Hz) 72dB (120Hz)
Control Features - - -
Protection Features Over Current, Over Temperature Over Current, Over Temperature Over Temperature, Short Circuit
Operating Temperature -40°C ~ 125°C -40°C ~ 125°C -40°C ~ 125°C
Mounting Type Through Hole Through Hole Through Hole
Package / Case TO-220-3 TO-220-3 TO-220-3
Supplier Device Package TO-220 TO-220 TO-220

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