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UC3843BD1 The STMicroelectronics UC3843BD1 is a DC DC Switching Controller designed for Boost and Flyback topologies. It operates within a voltage range of 7.6V to 30V and supports frequencies up to 500kHz.
Mfr Part #:

UC3843BD1

Available from 3 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
The STMicroelectronics UC3843BD1 is a DC DC Switching Controller designed for Boost and Flyback topologies. It operates within a voltage range of 7.6V to 30V and supports frequencies up to 500kHz.
✓ Total Stock: 43,399 pcs
$ Price Range: $0.78

UC3843BD1 Available from 3 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Fe Components ✓
Non-Authorised Inventory information
38,300 pcs
On Request
38300 pcs On Request 1 On Request On Request On Request On Request On Request
Components Technology Group, Inc. ✓
Non-Authorised Inventory information
5,000 pcs
On Request
5000 pcs On Request 1 On Request On Request On Request On Request On Request
Seba Components ✓
Non-Authorised Inventory information
99 pcs
On Request
99 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.

UC3843BD1 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Clock Sync
Control Features
Duty Cycle (Max)
Frequency
Function
Mounting Type
Number of Outputs
Operating Temperature
Output Configuration
Output Phases
Output Type
Supplier Device Package
Synchronous Rectifier
Topology
Voltage
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UC3843BD1 Description

Short technical summary and product information.

The UC3843BD1 from STMicroelectronics is a versatile DC DC Switching Controller suitable for Boost and Flyback applications. This component operates efficiently within a voltage range of 7.6V to 30V, making it adaptable to various power supply designs.

 

Featuring a maximum duty cycle of 96% and operating frequencies up to 500kHz, the UC3843BD1 offers precise control for power conversion. It supports a single output and is configured as a positive, isolation-capable transistor driver. The device operates without a synchronous rectifier and includes frequency control features.

 

Packaged in an 8-SOIC surface mount configuration, this controller is designed for ease of integration into printed circuit boards. Its operating temperature range is from 0°C to 70°C (TJ), ensuring reliable performance in moderate environmental conditions. The UC3843BD1 is a component within the broader category of Power Management ICs, specifically tailored for DC DC switching control.

 

This controller is ideal for engineers designing power supplies that require efficient voltage regulation and conversion. Its specifications allow for flexible implementation in systems demanding stable power output and isolation capabilities.

UC3843BD1 Quick Information

Product Type: DC DC Switching Controller
Canonical Name: UC3843BD1 DC DC Switching Controller
Subcategory: Power Management ICs

UC3843BD1 Compliance

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

UC3843BD1 Estimated Pricing

Qty Low High
1+ $0.78 $0.78

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

UC3843BD1 Features

  • Operates from 7.6V to 30V.
  • Supports Boost and Flyback topologies.
  • Frequency control up to 500kHz.
  • Surface mount 8-SOIC package.
  • Suitable for isolation capable designs.

UC3843BD1 Applications

  • Used in power supply regulation circuits.
  • Ideal for boost converter designs.
  • Suitable for flyback converter applications.
  • Can be used in isolated power supply designs.
  • Applicable in telecom and industrial power.

UC3843BD1 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the UC3843BD1?

The operating voltage range is 7.6V to 30V.

What is the package type of the UC3843BD1?

The package is 8-SOIC (0.154", 3.90mm Width) surface mount.

What is the operating temperature range of the UC3843BD1?

The operating temperature range is 0°C to 70°C (junction temperature).

What topologies does the UC3843BD1 support?

It supports boost and flyback topologies.

What is the output type of the UC3843BD1?

Transistor driver output.

What is the switching frequency of the UC3843BD1?

Up to 500kHz.

What is the maximum duty cycle of the UC3843BD1?

96%.

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