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LDK320AU50R The STMicroelectronics LDK320AU50R is a linear voltage regulator providing a fixed 5V output at up to 200mA. It features a low quiescent current of 90 µA and operates over a wide temperature range.
Mfr Part #:

LDK320AU50R

Available from 3 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
The STMicroelectronics LDK320AU50R is a linear voltage regulator providing a fixed 5V output at up to 200mA. It features a low quiescent current of 90 µA and operates over a wide temperature range.
✓ Total Stock: 10,045 pcs
$ Price Range: $0.28

LDK320AU50R Available from 3 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Fe Components ✓
Non-Authorised Inventory information
5,000 pcs
On Request
5000 pcs On Request 1 On Request On Request On Request On Request On Request
Risen Electronics ✓
Non-Authorised Inventory information
5,000 pcs
On Request
5000 pcs On Request 1 On Request On Request On Request On Request 2026-02-16 21:33:16
Optech Co.,Limited ✓
Non-Authorised Inventory information
45 pcs
On Request
45 pcs On Request 1 On Request On Request 21+ On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

LDK320AU50R Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Mounting Type
Number of Regulators
Operating Temperature
Output Configuration
Output Current
Output Type
PSRR
Protection Features
SVHC Present
Supplier Device Package
Voltage
Voltage Dropout (Max)
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LDK320AU50R Description

Short technical summary and product information.

The STMicroelectronics LDK320AU50R is a linear voltage regulator designed for efficient power management. It delivers a stable 5V output with a maximum current capability of 200mA. The device boasts a low quiescent current of 90 µA, making it suitable for battery-powered applications where power conservation is critical.

 

Key electrical features include an input voltage range up to 18V and a typical dropout voltage of 0.35V at 200mA. Protection features such as over current and over temperature are integrated to ensure device reliability. The regulator also offers good power supply rejection ratio (PSRR) across a frequency range of 120Hz to 10kHz.

 

This component is housed in a SOT-89 (TO-243AA) surface-mount package, facilitating integration into compact electronic designs. It operates reliably within an ambient temperature range of -40°C to 125°C (TJ).

 

The LDK320AU50R is a single-regulator device suitable for various general-purpose power supply applications requiring a fixed positive voltage.

LDK320AU50R Quick Information

Product Type: Linear Voltage Regulator
Series: LDK320A
Canonical Name: STMicroelectronics LDK320AU50R Linear Voltage Regulator
Subcategory: Linear

LDK320AU50R Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: Yes

LDK320AU50R Estimated Pricing

Qty Low High
1+ $0.28 $0.28

Estimated market price range - modelled values for guidance only, not live distributor offers.

LDK320AU50R Features

  • Fixed 5V output voltage.
  • 200mA maximum output current.
  • Low 90 µA quiescent current.
  • Surface mount SOT-89 package.
  • Over current and over temperature protection.

LDK320AU50R Applications

  • Ideal for battery-powered devices.
  • Suitable for portable electronics.
  • Used in general power supply circuits.
  • Provides stable voltage rails.

LDK320AU50R FAQs

7 frequently asked questions generated from this part’s specifications.
What is the output voltage of the LDK320AU50R?

The LDK320AU50R provides a fixed 5V output voltage.

What is the maximum output current for the LDK320AU50R?

The LDK320AU50R can supply a maximum output current of 200mA.

What is the input voltage range for this regulator?

The LDK320AU50R accepts an input voltage up to 18V.

What is the dropout voltage at 200mA?

The dropout voltage is typically 0.35V at 200mA.

How much quiescent current does the LDK320AU50R consume?

The quiescent current is typically 90 µA.

What are the operating temperature limits?

The operating temperature range is -40°C to 125°C (TJ).

What package type is the LDK320AU50R supplied in?

It is supplied in a SOT-89 package, also known as TO-243AA.

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