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HomeProductsIntegrated Circuits (ICs)PMIC - Voltage Regulators - DC DC Switching ControllersMCP19123T-E/MQ
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MCP19123T-E/MQ - Microchip Technology

Manufacturer Part Number
MCP19123T-E/MQ
Manufacturer
Microchip Technology
Allelco Part Number
32D-MCP19123T-E/MQ
Warranty
1 Year Allelco Warranty - Find out more
Parts Description
IC REG CTRLR BCK PMBUS 28QFN
Package
28-QFN (5x5)
Data sheet
1.MCP19123T-E/MQ.pdf ...

PCN Assembly/Origin

Mult Devices 24/May/2018.pdf
RoHs Status
ROHS3 Compliant
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Our certification
In stock: 7950
  • Unit Price: $2.257
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $2.257 $2.26
200+ $0.874 $174.80
500+ $0.843 $421.50
1000+ $0.828 $828.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.
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Specifications

MCP19123T-E/MQ Tech Specifications
Microchip Technology - MCP19123T-E/MQ technical specifications, attributes, parameters and parts with similar specifications to Microchip Technology - MCP19123T-E/MQ

Product Attribute Attribute Value  
Manufacturer Microchip Technology  
Voltage - Supply (Vcc/Vdd) 4.5V ~ 40V  
Topology Buck  
Synchronous Rectifier Yes  
Supplier Device Package 28-QFN (5x5)  
Series Automotive, AEC-Q100  
Serial Interfaces I²C, PMBus, SMBus  
Package / Case 28-VFQFN Exposed Pad  
Package Tape & Reel (TR)  
Output Type PWM Signal  
Output Phases 2  
Product Attribute Attribute Value  
Output Configuration Positive  
Operating Temperature -40°C ~ 125°C (TA)  
Number of Outputs 1  
Mounting Type Surface Mount  
Function Step-Down  
Frequency - Switching 100kHz ~ 1.6MHz  
Duty Cycle (Max) -  
Control Features Enable, Frequency Control, Power Good, Soft Start, Watchdog  
Clock Sync Yes  
Base Product Number MCP19123  

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 3 (168 Hours)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.31.0001

Parts Introduction

Manufacturer Part Number

MCP19123T-E/MQ

Manufacturer

microchip-technology

Introduction

The MCP19123T-E/MQ is a highly integrated, synchronous step-down DC-DC switching regulator controller that operates over a wide input voltage range of 4.5V to 40V. It provides a single regulated output voltage with high efficiency and excellent load and line regulation. The device features a wide switching frequency range of 100kHz to 1.6MHz, allowing for flexible design optimization.

Product Features and Performance

Wide input voltage range of 4.5V to 40V

Single regulated output with high efficiency

Excellent load and line regulation

Wide switching frequency range of 100kHz to 1.6MHz

Synchronous rectification for improved efficiency

Clock synchronization for reduced EMI

I2C, PMBus, and SMBus serial interfaces for configuration and monitoring

Comprehensive control features including enable, frequency control, power good, soft start, and watchdog

Product Advantages

Flexible design optimization through wide switching frequency range

Improved efficiency and reduced EMI through synchronous rectification and clock synchronization

Comprehensive configuration and monitoring capabilities through serial interfaces

Key Reasons to Choose This Product

Wide input voltage range and high efficiency make it suitable for a variety of power supply applications

Flexible control features and serial interfaces allow for advanced power management and monitoring

Automotive-grade qualification and AEC-Q100 compliance ensure reliability and performance in demanding environments

Quality and Safety Features

Automotive-grade qualification (AEC-Q100)

Exposed pad package for enhanced thermal performance and reliability

Compatibility

The MCP19123T-E/MQ is a standalone DC-DC switching controller and can be used with external power MOSFETs, inductors, and other passive components to form a complete power supply solution.

Application Areas

Automotive electronics

Industrial control systems

Telecommunications equipment

Medical devices

General-purpose power supplies

Product Lifecycle

The MCP19123T-E/MQ is an active product. There are no known equivalent or alternative models available at this time. If you require additional information or have any questions, please contact our sales team through our website.

Parts with Similar Specifications

The three parts on the right have similar specifications to Microchip Technology MCP19123T-E/MQ

Product Attribute MCP19123-E/MQ MCP19119T-E/MQVAO MCP19124T-E/MJ MCP19119T-E/MQ
Part Number MCP19123-E/MQ MCP19119T-E/MQVAO MCP19124T-E/MJ MCP19119T-E/MQ
Manufacturer Microchip Technology Microchip Technology Microchip Technology Microchip Technology
Mounting Type - Surface Mount Through Hole Surface Mount
Frequency - Switching - - - -
Voltage - Supply (Vcc/Vdd) - - - -
Output Configuration - - - -
Serial Interfaces - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Synchronous Rectifier - - - -
Series - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Number of Outputs - - - -
Control Features - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Base Product Number - DAC34H84 MAX500 ADS62P42
Function - - - -
Output Phases - - - -
Clock Sync - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Topology - - - -
Duty Cycle (Max) - - - -
Output Type - Current - Unbuffered Voltage - Buffered -

MCP19123T-E/MQ Datasheet PDF

Download MCP19123T-E/MQ pdf datasheets and Microchip Technology documentation for MCP19123T-E/MQ - Microchip Technology.

Datasheets
MCP19122-23 Datasheet.pdf MCP19122,23 Programming Specification.pdf PMBus™ Monitoring GUI Guide.pdf
PCN Packaging
MBB/Label Chgs 16/Nov/2018.pdf
PCN Assembly/Origin
Mult Devices 24/May/2018.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

  • Daic***K.
    Mar 23, 2026

    Very good. No issue after long time testing.

  • Kevi***.
    Mar 17, 2026

    Fast switching and stable output. Very satisfied with this IC

  • Daou***hekebkeb
    Jun 16, 2024

    I had a great experience purchasing items from Allelcoelec, I recommend

  • Uri ***al
    Jun 19, 2024

    Good comunication,
    Transpnt regarding the process and price.

  • Yaqu***l Ali
    Jun 19, 2024

    Providing reasonable prices, regular follow-up of orders, providing accurate and regular invoices, timely delivery of goods, excellent customer service and providing original goods and best quality materials.

  • Lea ***
    Jun 19, 2024

    Morrey was very helpful and right on top of things!
    He replied quickly to my RFQ. He was very courteous and professional.

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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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MCP19123T-E/MQ Image

MCP19123T-E/MQ

Microchip Technology
32D-MCP19123T-E/MQ

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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