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UC3842N The Texas Instruments UC3842N is a current mode PWM controller designed for DC-to-DC converters. It operates with an input voltage range of 12V to 28V and a maximum duty cycle of 97%.
Mfr Part #:

UC3842N

Available from 1 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments UC3842N is a current mode PWM controller designed for DC-to-DC converters. It operates with an input voltage range of 12V to 28V and a maximum duty cycle of 97%.
✓ Total Stock: 124 pcs
$ Price Range: $0.78

UC3842N Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Smaxon Electronics ✓
Non-Authorised Inventory information
124 pcs
On Request
124 pcs On Request 1 On Request On Request 17+ 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.

UC3842N 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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UC3842N Description

Short technical summary and product information.

The UC3842N from Texas Instruments is a single-ended, current mode PWM controller optimized for off-line and DC-to-DC converters. It features an operating voltage range of 12V to 28V and can operate at frequencies up to 500kHz, with a maximum duty cycle of 97%.

 

This controller supports multiple topologies including Boost, Buck, Buck-Boost, Flyback, and Forward configurations. It includes features such as frequency control, undervoltage lockout with hysteresis, and pulse-by-pulse current limiting. The device is housed in an 8-PDIP package and is designed for through-hole mounting.

 

Key electrical characteristics include a 12V to 28V input voltage range and a maximum duty cycle of 97%. The controller operates within an ambient temperature range of 0°C to 70°C. Its output type is a transistor driver, and it is not a synchronous rectifier.

 

The UC3842N is suitable for various power supply applications requiring efficient and stable voltage regulation. Its through-hole mounting makes it suitable for traditional PCB designs.

UC3842N Quick Information

Product Type: DC DC Switching Controller
Canonical Name: UC3842N Current Mode PWM Controller
Subcategory: Current Mode

UC3842N Compliance

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

UC3842N Estimated Pricing

Qty Low High
1+ $0.78 $0.78

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

UC3842N Features

  • Current mode PWM controller
  • Operates from 12V to 28V
  • Up to 500kHz switching frequency
  • 97% maximum duty cycle
  • 8-PDIP through-hole package

UC3842N Applications

  • Optimized for DC-to-DC converters
  • Suitable for off-line power supplies
  • Supports multiple topologies
  • Used in voltage regulation circuits

UC3842N FAQs

7 frequently asked questions generated from this part’s specifications.
What is the input voltage range of the UC3842N?

The UC3842N operates from 12V to 28V.

What package does the UC3842N come in?

The UC3842N is available in an 8-PDIP (8-DIP) through-hole package.

What is the operating temperature range?

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

What is the maximum switching frequency?

Up to 500kHz.

What is the maximum duty cycle?

97%.

What topologies does the UC3842N support?

Boost, buck, buck-boost, flyback, and forward.

What functions does the UC3842N perform?

Step-up, step-down, and step-up/step-down.

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