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UC3843B The UMW UC3843B is a DC-DC controller IC designed for Boost and Flyback regulator outputs. It operates with a supply voltage range of 7.6V to 30V and features a switching frequency up to 500kHz.
Mfr Part #:

UC3843B

Available from 1 distributors
Mfr Name: ST
ST
The UMW UC3843B is a DC-DC controller IC designed for Boost and Flyback regulator outputs. It operates with a supply voltage range of 7.6V to 30V and features a switching frequency up to 500kHz.
✓ Total Stock: 480 pcs
$ Price Range: $1.92

UC3843B Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Rayichip ✓
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480 pcs
On Request
480 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.

UC3843B Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Control Features
Duty Cycle
Mounting Type
Operating Temperature
Output Type
Storage Temperature
Tape & Reel
Topology
Voltage Supply
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UC3843B Description

Short technical summary and product information.

The UC3843B from UMW is a versatile DC-DC controller IC suitable for Boost and Flyback regulator applications. This component operates within a wide supply voltage range of 7.6V to 30V, making it adaptable for various power management needs.

 

Key electrical specifications include a maximum duty cycle of 50% and a switching frequency that can reach up to 500kHz. The device offers control features such as frequency control and soft start, aiding in stable power delivery. Its operating temperature range is from 0°C to 70°C.

 

Packaged in an 8-SOIC surface mount configuration, the UC3843B is designed for ease of integration into printed circuit boards. The RoHS status is ROHS3 Compliant, and it is REACH Unaffected, with a Moisture Sensitivity Level (MSL) of 1 (Unlimited).

 

This controller IC is a reliable choice for designers seeking efficient power conversion solutions in their electronic systems.

UC3843B Quick Information

Product Type: Power Management IC
Canonical Name: UC3843B Boost, Flyback Regulator Output DC-DC Controller IC
Subcategory: Power Management (PMIC)

UC3843B Compliance

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

UC3843B Estimated Pricing

Qty Low High
1+ $1.92 $1.92

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

UC3843B Features

  • Boost and Flyback regulator output controller.
  • Operates from 7.6V to 30V supply voltage.
  • Switching frequency up to 500kHz.
  • Surface mount 8-SOIC package.
  • Features frequency control and soft start.

UC3843B Applications

  • Used in Boost converter designs.
  • Suitable for Flyback converter circuits.
  • Power management applications.
  • DC-DC power supply circuits.

UC3843B FAQs

8 frequently asked questions generated from this part’s specifications.
What is the operating temperature range for the UC3843B?

The operating temperature range for the UC3843B is 0°C to 70°C.

What type of output does the UC3843B provide?

The UC3843B provides a PWM output type.

What topologies does the UC3843B support?

The UC3843B supports Boost and Flyback topologies.

How is the UC3843B mounted?

The UC3843B is designed for surface mount.

What is the maximum duty cycle for the UC3843B?

The maximum duty cycle for the UC3843B is 50%.

What is the package type of the UC3843B?

The UC3843B comes in an 8-SOIC package.

What is the switching frequency of the UC3843B?

The switching frequency of the UC3843B is up to 500kHz.

What is the supply voltage range for the UC3843B?

The supply voltage range for the UC3843B is 7.6V to 30V.

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