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UC3843 UC3843 is a DC DC switching controller from STMicroelectronics. It delivers a fixed 5V output at up to 1A with a 52kHz switching frequency.
Mfr Part #:

UC3843

Available from 1 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
UC3843 is a DC DC switching controller from STMicroelectronics. It delivers a fixed 5V output at up to 1A with a 52kHz switching frequency.
✓ Total Stock: 149 pcs
$ Price Range: $0.78

UC3843 Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Braun Electronic Components ✓
Non-Authorised Inventory information
149 pcs
On Request
149 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.

UC3843 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Frequency
Mounting Type
Operating Temperature
Output Voltage
Power Dissipation
Voltage
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UC3843 Description

Short technical summary and product information.

The UC3843 is a DC DC switching controller manufactured by STMicroelectronics. It operates with an input voltage range of 12V to 25V and provides a regulated 5V output. The controller can deliver up to 1A of output current and features a typical switching frequency of 52kHz.

 

This device is designed for surface mount assembly in an SOP-8 package. It operates over a temperature range of 0°C to 70°C. Key electrical characteristics include a maximum power dissipation of 702mW and a rise time of 50ns.

 

The UC3843 is suitable for a variety of power conversion applications requiring a stable 5V rail from a higher voltage input. Its 8-terminal SOP package allows for compact PCB layouts.

UC3843 Quick Information

Product Type: DC DC Switching Controller
Canonical Name: UC3843 DC DC Switching Controller
Subcategory: Power Management

UC3843 Compliance

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

UC3843 Estimated Pricing

Qty Low High
1+ $0.78 $0.78

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

UC3843 Features

  • Fixed 5V output voltage regulation.
  • 1A maximum output current capability.
  • 52kHz typical switching frequency.
  • SOP-8 surface mount package.
  • 0°C to 70°C operating temperature range.

UC3843 Applications

  • DC DC step-down power conversion.
  • 5V rail generation from higher voltages.
  • Embedded system power supplies.
  • Industrial control power management.

UC3843 FAQs

5 frequently asked questions generated from this part’s specifications.
What is the output voltage of the UC3843?

The nominal output voltage is 5V.

What is the maximum output current?

The maximum output current is 1A.

What is the operating temperature range?

The operating temperature range is 0°C to 70°C.

What package does the UC3843 come in?

The UC3843 is available in an SOP-8 surface mount package.

What is the switching frequency?

The typical switching frequency is 52kHz.

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