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HomeProductsIntegrated Circuits (ICs)PMIC - Voltage Regulators - LinearL4938ED
L4938ED Image
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L4938ED - STMicroelectronics

Manufacturer Part Number
L4938ED
Manufacturer
STMicroelectronics
Allelco Part Number
32D-L4938ED
ECAD Model
Parts Description
IC REG LINEAR POS ADJ 20SO
Package
20-SOIC (0.295", 7.50mm Width)
Data sheet
L4938ED,EPD.pdf
RoHs Status
ROHS3 Compliant
Our certification
In stock: 17270

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Specifications

L4938ED Tech Specifications
STMicroelectronics - L4938ED technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics - L4938ED

Product Attribute Attribute Value  
Manufacturer STMicroelectronics  
Voltage Dropout (Max) 0.4V @ 100mA, 0.6V @ 400mA  
Voltage - Output (Min/Fixed) 4.9V (5V)  
Voltage - Output (Max) 5.1V  
Voltage - Input (Max) 28V  
Supplier Device Package 20-SO  
Series -  
Protection Features Over Temperature  
Package / Case 20-SOIC (0.295", 7.50mm Width)  
Package Tube  
Product Attribute Attribute Value  
PSRR -  
Output Type Adjustable (Fixed)  
Output Configuration Positive  
Operating Temperature -40°C ~ 150°C  
Number of Regulators 2  
Mounting Type Surface Mount  
Current - Output 100mA, 400mA  
Control Features Enable, Reset  
Base Product Number L4938  

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 3 (168 Hours)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Parts Introduction

Manufacturer Part Number

L4938ED

Manufacturer

stmicroelectronics

Introduction

The L4938ED is a dual-channel, low-dropout (LDO) voltage regulator from STMicroelectronics. It provides a stable and regulated output voltage from a wide input voltage range, making it suitable for a variety of power supply applications.

Product Features and Performance

Dual-channel LDO voltage regulator

Wide input voltage range: up to 28V

Adjustable output voltage: 4.9V to 5.1V

Output current capability: 100mA and 400mA

Low voltage dropout: 0.4V at 100mA, 0.6V at 400mA

Integrated thermal shutdown and current limiting protection

Enable and reset control features

Wide operating temperature range: -40°C to 150°C

Surface mount package: 20-SOIC (7.50mm width)

Product Advantages

Efficient power management with low power consumption

Stable and reliable output voltage for sensitive electronic components

Compact surface mount package for space-constrained applications

Comprehensive protection features for enhanced safety and reliability

Key Reasons to Choose This Product

Versatile dual-channel design for flexible power supply configurations

Wide input voltage range and adjustable output voltage for broad compatibility

Robust protection features for reliable operation in demanding environments

Compact surface mount package for easy integration into compact designs

Quality and Safety Features

Integrated thermal shutdown and current limiting protection

Compliance with relevant safety and quality standards

Compatibility

The L4938ED is designed to be compatible with a wide range of electronic devices and systems that require a stable and regulated power supply.

Application Areas

Portable electronics

Industrial control systems

Automotive electronics

Telecommunications equipment

Consumer electronics

Product Lifecycle

The L4938ED is an obsolete product, meaning it is no longer in active production. However, there may be equivalent or alternative models available from STMicroelectronics or other manufacturers. Customers are advised to contact our website's sales team for more information on available options.

Parts with Similar Specifications

The three parts on the right have similar specifications to STMicroelectronics L4938ED

Product Attribute L4938ED L4940D2M5-TR L4938ND013TR L4931CPT50
Part Number L4938ED L4940D2M5-TR L4938ND013TR L4931CPT50
Manufacturer STMicroelectronics STMicroelectronics STMicroelectronics STMicroelectronics
Control Features Enable, Reset - Enable, Reset -
PSRR - 68dB (120Hz) - 70dB ~ 55dB (120Hz ~ 10kHz)
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount
Protection Features Over Temperature Over Temperature, Reverse Polarity, Short Circuit Over Temperature, Short Circuit Over Current, Over Temperature
Voltage - Output (Min/Fixed) 4.9V (5V) 5V 5V, Tracking 5V
Voltage Dropout (Max) 0.4V @ 100mA, 0.6V @ 400mA 0.9V @ 1.5A 0.4V @ 50mA, 0.6V @ 500mA 0.8V @ 250mA
Current - Output 100mA, 400mA 1.5A 50mA, 500mA 250mA
Output Type Adjustable (Fixed) Fixed Adjustable (Fixed) Fixed
Operating Temperature -40°C ~ 150°C -40°C ~ 150°C -40°C ~ 125°C -40°C ~ 125°C
Supplier Device Package 20-SO D2PAK 20-SO PPAK
Output Configuration Positive Positive Positive Positive
Base Product Number L4938 L4940 L4938 L4931
Series - - - -
Package / Case 20-SOIC (0.295", 7.50mm Width) TO-263-3, D²Pak (2 Leads + Tab), TO-263AB 20-SOIC (0.295", 7.50mm Width) TO-252-5, DPak (4 Leads + Tab), TO-252AD
Package Tube Tape & Reel (TR) Tape & Reel (TR) Tube
Voltage - Input (Max) 28V 17V 25V 20V
Voltage - Output (Max) 5.1V - - -
Number of Regulators 2 1 2 1

L4938ED Datasheet PDF

Download L4938ED pdf datasheets and STMicroelectronics documentation for L4938ED - STMicroelectronics.

HTML Datasheet
L4938ED,EPD.pdf

Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.

Your Faithful Supply Chain Partner -

Contact us if you have any questions.

  1. Phone
    +00852 9146 4856

Certifications & Memberships

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L4938ED Image

L4938ED

STMicroelectronics
32D-L4938ED

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