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Switching Controllers with 52kHz frequency and 1A current

ISO14001 ISO9001 DUNS

Brands: Onsemi

Mfr.Part #: UC2843BDR2G

Datasheet: UC2843BDR2G Datasheet (PDF)

Package/Case: SOIC-14

Product Type: DC DC Switching Controllers

RoHS Status:

Stock Condition: 6,653 pcs, New Original

Warranty: 1 Year Ovaga Warranty - Find Out More

Quick Quote

Please submit RFQ for UC2843BDR2G or email to us: Email: [email protected], we will contact you within 12 hours.

UC2843BDR2G General Description

The UC3842B and UC3843B series offer exceptional performance in current mode control for various power supply applications. With a focus on efficiency and simplicity, these controllers provide a cost-effective solution that requires few additional components. The integrated circuits feature a precision oscillator for accurate duty cycle regulation, a temperature-compensated reference, a high-gain error amplifier, and a current sensing comparator. The totem pole output can efficiently drive a power MOSFET for optimal power conversion


  • Fully Integrated PWM Controller
  • High-Efficiency Design for Low Power Consumption
  • Fixed-Frequency Oscillator up to 250 kHz


  • Efficient PWM controller
  • Useful in battery chargers
  • Top choice for UPS systems


Parameter Value Parameter Value
Status Active Compliance PbAHP
Package Type SOIC-14 Case Outline 751A-03
MSL Type 1 MSL Temp (°C) 260
Container Type REEL Container Qty. 2500
ON Target N Topology Flyback
Control Mode Current Mode fsw Typ (kHz) 52
Stand-by Mode No UVLO (V) Yes
Short Circuit Protection Yes Latch No
Soft Start No VCC Max (V) 30
Drive Cap. (mA) 200 / 200


Shipping Type Ship Fee Lead Time
DHL DHL $20.00-$40.00 (0.50 KG) 2-5 days
Fedex Fedex $20.00-$40.00 (0.50 KG) 2-5 days
UPS UPS $20.00-$40.00 (0.50 KG) 2-5 days
TNT TNT $20.00-$40.00 (0.50 KG) 2-5 days
EMS EMS $20.00-$40.00 (0.50 KG) 2-5 days
REGISTERED AIR MAIL REGISTERED AIR MAIL $20.00-$40.00 (0.50 KG) 2-5 days

Processing Time:Shipping fee depend on different zone and country.


Terms of payment Hand Fee
Wire Transfer Wire Transfer charge US$30.00 banking fee.
Paypal Paypal charge 4.5% service fee.
Credit Card Credit Card charge 3.5% service fee.
Western Union Western Union charge US.00 banking fee.
Money Gram Money Gram charge US$0.00 banking fee.


1.The electronic components you purchase include 365 Days Warranty, We guarantee product quality.

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.


  • Product

    Step1 :Product

  • Vacuum packaging

    Step2 :Vacuum packaging

  • Anti-static bag

    Step3 :Anti-static bag

  • Individual packaging

    Step4 :Individual packaging

  • Packaging boxes

    Step5 :Packaging boxes

  • bar-code shipping tag

    Step6 :bar-code shipping tag

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.

  • ESD
  • ESD

Part points

  • The UC2843BDR2G is a highly efficient current mode PWM controller chip designed for use in power supply and battery charger applications. It allows for wide input voltage range and adjustable operating frequency, making it ideal for various power management solutions. Its integrated features include short-circuit protection and soft start capabilities.
  • Equivalent

    Equivalent products of UC2843BDR2G chip are UC2843A, UC3843A, UC3843AN, UC3843B, UC3843BN, UC3842BN, and UC3842B. They are all high-performance fixed-frequency current-mode controllers for low-cost power supplies in offline, DC-DC, and lighting applications.
  • Features

    UC2843BDR2G is a high performance current mode controller with adjustable frequency and voltage feed-forward. It has an internal soft-start capability, under-voltage lockout, error amplifier, oscillator, PWM comparator, and high output drive capability. It also has a wide operating voltage range and temperature range for various applications.
  • Pinout

    The pin count of UC2843BDR2G is 8 pins. It is a current mode PWM controller for power supply applications. Pin functions include VCC for power supply, COMP for error amplifier output, FB for feedback input, and GND for ground connection.
  • Manufacturer

    UC2843BDR2G is manufactured by ON Semiconductor, a leading supplier of semiconductor-based solutions for various industries such as automotive, communications, consumer, and industrial markets. ON Semiconductor specializes in power management, analog, sensors, logic, discrete, and custom devices.
  • Application Field

    The UC2843BDR2G is a high-performance current-mode controller designed for use in power supplies and voltage regulators. Its applications include switching power supplies, battery chargers, LED drivers, and motor control circuits. This device is widely used in various electronic devices to regulate and control power supply efficiently and reliably.
  • Package

    The UC2843BDR2G chip is a surface mount SOIC-8 package with a size of 4.9mm x 3.9mm x 1.75mm.

We provide high quality products, thoughtful service and after sale guarantee

  • Product

    We have rich products, can meet your various needs.

  • quantity

    Minimum order quantity starts from 1pcs.

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    Lowest international shipping fee starts from $0.00

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    365 days quality guarantee for all products

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