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UC3843BVD1R2 The UC3843BVD1R2 from ON Semiconductor is a high-performance fixed-frequency current mode controller designed for off-line and DC-DC converter applications. It offers precise duty cycle control and minimal external components.
Mfr Part #:

UC3843BVD1R2

Available from 1 distributors
Mfr Name: On Semiconductor
On Semiconductor
The UC3843BVD1R2 from ON Semiconductor is a high-performance fixed-frequency current mode controller designed for off-line and DC-DC converter applications. It offers precise duty cycle control and minimal external components.
✓ Total Stock: 48,495 pcs
$ Price Range: $0.78

UC3843BVD1R2 Available from 1 distributor

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✓ Non-Authorised
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Flip Electronics ✓
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48,495 pcs
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UC3843BVD1R2 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
Supplier Package
Synchronous Rectifier
Topology
Voltage
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UC3843BVD1R2 Description

Short technical summary and product information.

The UC3843BVD1R2 is a high-performance fixed-frequency current mode controller from ON Semiconductor, suitable for off-line and DC-DC converter applications. It is designed to provide a cost-effective solution with minimal external components.

 

Key features include a trimmed oscillator for precise frequency control, a temperature-compensated reference, a high-gain error amplifier, and a current sensing comparator. The device also incorporates protective features such as undervoltage lockouts with hysteresis, cycle-by-cycle current limiting, and programmable output deadtime.

 

This controller operates with a voltage range of 7.6V to 30V and can achieve frequencies up to 500kHz, with a maximum duty cycle of 96%. It is available in an 8-pin SOIC surface-mount package, making it suitable for space-constrained designs.

 

The UC3843BVD1R2 is ideal for designers seeking a robust and efficient solution for power conversion circuits, offering a balance of performance and component count.

UC3843BVD1R2 Quick Information

Product Type: Current Mode Controller
Canonical Name: UC3843BVD1R2 Current Mode Controller
Subcategory: Current Mode Controller

UC3843BVD1R2 Compliance

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

UC3843BVD1R2 Estimated Pricing

Qty Low High
1+ $0.78 $0.78

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

UC3843BVD1R2 Features

  • High performance fixed frequency current mode controller.
  • Precise duty cycle control with trimmed oscillator.
  • Operates from 7.6V to 30V input voltage.
  • Supports frequencies up to 500kHz.
  • Available in an 8-SOIC surface mount package.

UC3843BVD1R2 Applications

  • Ideal for off-line converter applications.
  • Suitable for DC-DC converter designs.
  • Used in boost converter circuits.
  • Applicable to flyback converter designs.

UC3843BVD1R2 FAQs

6 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of UC3843BVD1R2?

The operating voltage range is 7.6V to 30V.

What is the package type of UC3843BVD1R2?

It is available in an 8-SOIC (0.154", 3.90mm Width) surface mount package.

What is the operating temperature range?

The operating temperature range is -40°C to 105°C (TA).

What is the maximum switching frequency?

The maximum switching frequency is up to 500kHz.

What topologies does UC3843BVD1R2 support?

It supports boost and flyback topologies.

What is the maximum duty cycle?

The maximum duty cycle is 96%.

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