Products > Integrated Circuits (ICs) > Power Management ICs > SG3844M
  • SG3844M

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Switching Controllers Current Mode PWMs

  • Package/Case :
  • DIP-8
  • Product Categories :
  • Pulse width modulator controller
  • RoHs Status:
  • Lead free/RoHS Compliant
  • In-stock:
  • 4872


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SG3844M Product Details

The SG1844/45 family of control ICs provides all the required features to implement off-line Fixed Frequency, Current-mode switching power supplies with a minimum number of external components. Current-mode architecture demonstrates improved line regulation, improved load regulation, pulse-by pulse current limiting and inherent protection of the power supply output switch.The Bandgap reference is trimmed to ±1% over temperature. Oscillator discharge current is trimmed to less than ±10%. The SG1844/45 has under-voltage lockout, current-limiting circuitry and start-up current of less than 1mA. The totem-pole output is optimized to drive the gate of a power MOSFET. The output is low in the off state to provide direct interface to an Nchannel device. Both operate up to a maximum duty cycle range of zero to <50% due to an internal toggle flip-flop which blanks the output off every other clock cycle. The SG1844/45 is specified for operation over the full military ambient temperature range of -55°C to 125°C. The SG3844/45 is designed for the commercial range of 0°C to 70°C.


  • Optimized for Off-Line Control
  • Low Start-Up Current (<1mA)
  • Automatic Feed Forward Compensation
  • Trimmed Oscillator
  • Discharge Current
  • Pulse-By-Pulse Current Limiting
  • Enhanced Load Response Characteristics
  • Undervoltage Lockout with 6V Hysteresis (SG1844 only)
  • Double Pulse Suppression
  • High-Current Totem-Pole Output
  • Internally Trimmed Bandgap Reference
  • 500kHz Operation
  • Under-voltage Lockout: SG1844 - 16 Volts, SG1845 - 8.4 Volts
  • Low Shoot-through Current <75mA Over Temperature

Technical Parameters

  • Supply Voltage (DC)
  • 30.0 V
  • Number of Outputs
  • 1
  • Quiescent Current
  • 11.0 mA
  • Product Lifecycle Status
  • Active
  • Packaging
  • Tube
  • Mounting Style
  • Through Hole
  • Number of Pins
  • 8
  • Case/Package
  • DIP
  • RoHS
  • Non-Compliant
  • Lead Free Status
  • Contains Lead

SG3844M Documents

SG3844M Related Products

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Estimated Delivery Time: Jul 10 - Jul 15 days (choose Expedited at checkout).

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    We have rich products, can meet your various needs.

  • Minimum order quantity starts from 1pcs.

    Minimum order quantity starts from 1pcs.

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    Lowest international shipping fee starts from US$2.00.

  • 90 days quality guarantee for all products.

    90 days quality guarantee for all products.


  • Step1:Product

    Step1: Products

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    Step4: Individual Packaging

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All the products will packing in anti-staticbag. Ship with ESD antistatic protection.

Outside ESD packing’s lable will use ourcompany’s information: Part Mumber, Brand and Quantity.

We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.

After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.

Jotrin ESD packing


1.We provide 90 days warranty.

2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.


Q: How does Jotrin guarantee that SG3844M is the original manufacturer or agent of MICROSEMI?
We have a professional business development department to strictly test and verify the qualifications of MICROSEMI original manufacturers and agents. All MICROSEMI suppliers must pass the qualification review before they can publish their SG3844M devices; we pay more attention to the channels and quality of SG3844M products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of SG3844M chips? Including MICROSEMI original factory information, Pulse width modulator controller application, SG3844M pictures?
You can use Jotrin's intelligent search engine, or filter by High-Reliability ; Military-grade Devices ; High-Reliability Power Management ; High-Reliability Isolated Switching Regulators ; SG1844, SG1845, SG3844, SG3845 category, or find it through Microsemi Corporation (Microchip ) Information page.
Q: Are the MICROSEMI's SG3844M price and stock displayed on the platform accurate?
The MICROSEMI's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for SG3844M, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
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Yes. We accept offline orders.
We can provide order placement service. You only need to log in, click "My Orders" to enter the transaction management, and you will see the "Order Details" interface. After checking it, select all and click "Place Order". In addition, you can enjoy coupons or other selected gifts when placing orders online.
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Note: It may take up to 24 hours before carriers will display tracking information. In normal conditions, Express delivery needs 3-5 days, Registered Mail needs 25-60 days.
Q: What is the process for returns or replacement of SG3844M?
All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the SG3844M we delivered, we will accept the replacement or return of the SG3844M only when all of the below conditions are fulfilled:
(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
(2)We are informed of the defect described above within 90 days after the delivery of SG3844M.
(3)The SG3844M is unused and only in the original unpacked packaging.
Two processes to return the products:
(1)Inform us within 90 days
(2)Obtain Requesting Return Authorizations
More details about return electronic components please see our Return & Change Policy.
Q: How to contact us and get support, such as SG3844M datasheet pdf, SG3844 pin diagram?
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Microsemi Corporation (Microchip )

Microsemi Corporation is a semiconductor manufacturer specializing in system engineering integrated circuits and high reliability discrete devices to support its stable growth and profitability. As a long-term supplier of high-reliability discrete devices for military and aerospace customers, Micros...
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