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UC3844BN The ON Semiconductor UC3844BN is a high-performance current mode controller designed for off-line and DC-DC converter applications. It operates within a voltage range of 10V to 36V and supports switching frequencies up to 500kHz.
Mfr Part #:

UC3844BN

Available from 1 distributors
Mfr Name: On Semiconductor
On Semiconductor
The ON Semiconductor UC3844BN is a high-performance current mode controller designed for off-line and DC-DC converter applications. It operates within a voltage range of 10V to 36V and supports switching frequencies up to 500kHz.
✓ Total Stock: 134 pcs
$ Price Range: $0.78

UC3844BN Available from 1 distributor

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✓ Non-Authorised
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134 pcs
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UC3844BN 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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UC3844BN Description

Short technical summary and product information.

The UC3844BN from ON Semiconductor is a fixed-frequency current mode controller suitable for off-line and DC-DC converter applications. It offers a cost-effective solution with minimal external components. Key features include an oscillator, a temperature-compensated reference, a high-gain error amplifier, and a high-current totem pole output.

 

This controller supports a wide operating voltage range of 10V to 36V and can operate at switching frequencies up to 500kHz, with a maximum duty cycle of 48%. It includes protective features such as undervoltage lockout with hysteresis and cycle-by-cycle current limiting. The output deadtime is adjustable from 50% to 70%.

 

The UC3844BN is available in an 8-pin DIP (Dual In-line Package) with through-hole mounting. Its function includes step-up and step-up/step-down capabilities, utilizing boost and flyback topologies. The device is designed for applications requiring precise frequency control and efficient power management.

 

This controller is ideal for designers seeking a robust and versatile solution for power conversion circuits. Its integrated features simplify design and reduce component count, making it a practical choice for various electronic systems.

UC3844BN Quick Information

Product Type: DC DC Switching Controller
Canonical Name: UC3844BN Current Mode Controller
Subcategory: Current Mode Controller

UC3844BN Compliance

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

UC3844BN Estimated Pricing

Qty Low High
1+ $0.78 $0.78

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

UC3844BN Features

  • High performance current mode controller.
  • Operates from 10V to 36V input.
  • Switching frequency up to 500kHz.
  • Adjustable output deadtime 50-70%.
  • Through-hole mounting in 8-DIP.

UC3844BN Applications

  • Ideal for off-line converters.
  • Suitable for DC-DC converter applications.
  • Used in boost topology circuits.
  • Used in flyback topology circuits.

UC3844BN FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range for the UC3844BN?

The operating voltage range is 10V to 36V.

What is the maximum operating temperature for the UC3844BN?

The maximum operating temperature is 70°C.

What is the maximum switching frequency supported by the UC3844BN?

The UC3844BN supports switching frequencies up to 500kHz.

What is the maximum duty cycle for the UC3844BN?

The maximum duty cycle is 48%.

What package type is the UC3844BN available in?

The UC3844BN is available in an 8-DIP (0.300", 7.62mm) package.

How is the UC3844BN mounted?

The UC3844BN is designed for through-hole mounting.

What are the control features of the UC3844BN?

The control features include frequency control.

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