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LD2979M38TR The STMicroelectronics LD2979M38TR is a linear voltage regulator providing a fixed 3.8V output. It is designed for low power applications and comes in a compact SOT23-5 package.
Mfr Part #:

LD2979M38TR

Available from 2 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
The STMicroelectronics LD2979M38TR is a linear voltage regulator providing a fixed 3.8V output. It is designed for low power applications and comes in a compact SOT23-5 package.
✓ Total Stock: 364,600 pcs
$ Price Range: $0.28

LD2979M38TR Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Romaks Technologies ✓
Non-Authorised Inventory information
361,600 pcs
On Request
361600 pcs On Request 1 On Request On Request On Request On Request On Request
Chanetech ✓
Non-Authorised Inventory information
3,000 pcs
On Request
3000 pcs On Request 1 On Request On Request On Request 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.

LD2979M38TR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Control Features
Current
Maximum Input Voltage
Mounting Type
Number of Regulators
Operating Temperature
Output Configuration
Output Current
Output Type
Output Voltage
PSRR
Protection Features
Quiescent Current
Supplier Device Package
Supplier Package
Voltage
Voltage Dropout (Max)
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LD2979M38TR Description

Short technical summary and product information.

The LD2979M38TR from STMicroelectronics is a very low dropout voltage regulator with an inhibit function, suitable for battery-powered systems and low-noise applications. It provides a stable 3.8V output voltage with a maximum output current of 50 mA.

 

Key electrical characteristics include a typical dropout voltage of 0.2V at 50mA and a low quiescent current of 500 µA at 50mA. The device features internal current and thermal limit protection, and a supply voltage rejection ratio of 63 dB at 120Hz. Stability is achieved with only a 1 µF external capacitor.

 

This regulator operates within a temperature range of -25°C to 125°C and is available in a SOT23-5L package. The logic-controlled shutdown feature allows for power saving by putting parts of the board into standby mode, making it ideal for portable electronic devices.

 

Designed for surface mount applications, the SOT-23-5 package offers a compact footprint. The device requires minimal external components for operation, simplifying circuit design.

LD2979M38TR Quick Information

Product Type: Voltage Regulator - Linear
Series: LD2979
Canonical Name: LD2979M38TR Very Low Drop Voltage Regulator
Subcategory: Linear

LD2979M38TR Compliance

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

LD2979M38TR Estimated Pricing

Qty Low High
1+ $0.28 $0.28

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

LD2979M38TR Features

  • Very low dropout voltage regulator.
  • Fixed 3.8V output voltage.
  • Up to 50mA output current.
  • Logic-controlled electronic shutdown.
  • Compact SOT23-5L package.

LD2979M38TR Applications

  • Suitable for battery-powered systems.
  • Ideal for low noise applications.
  • Enables standby mode for power saving.
  • Used in portable electronic devices.

LD2979M38TR FAQs

6 frequently asked questions generated from this part’s specifications.
What is the output voltage of the LD2979M38TR?

The output voltage is 3.8 V.

What is the maximum output current for this regulator?

The maximum output current is 50 mA.

What is the typical dropout voltage at 50mA load?

The typical dropout voltage is 0.2 V at a 50 mA load.

What is the quiescent current of the LD2979M38TR?

The typical quiescent current is 500 µA at 50 mA load.

What is the operating temperature range?

The operating temperature range is -25°C to 125°C.

What package is the LD2979M38TR supplied in?

It is supplied in a SOT-23-5 package.

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