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UC3842AD The Texas Instruments UC3842AD is a current mode PWM controller designed for off-line and DC-DC converters. It operates within a 10V to 30V range with a maximum duty cycle of 96% and frequency up to 500kHz.
Mfr Part #:

UC3842AD

Available from 2 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments UC3842AD is a current mode PWM controller designed for off-line and DC-DC converters. It operates within a 10V to 30V range with a maximum duty cycle of 96% and frequency up to 500kHz.
✓ Total Stock: 2,017 pcs
$ Price Range: $0.60

UC3842AD Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Components Technology Group, Inc. ✓
Non-Authorised Inventory information
2,000 pcs
On Request
2000 pcs On Request 1 On Request On Request On Request On Request On Request
Bristol Electronics ✓
Non-Authorised Inventory information
17 pcs
On Request
17 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.

UC3842AD 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
SVHC Present
Supplier Device Package
Supplier Package
Synchronous Rectifier
Topology
Voltage
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UC3842AD Description

Short technical summary and product information.

The Texas Instruments UC3842AD is a versatile current mode PWM controller suitable for various off-line and DC-DC converter applications. It offers a wide operating voltage range of 10V to 30V and supports a maximum duty cycle of 96% with switching frequencies up to 500kHz.

 

Key electrical features include frequency control, and it supports multiple topologies such as Boost, Buck, Flyback, and Forward. The device is designed for efficient power management, with a low start-up current of less than 0.5mA and a trimmed oscillator discharge current of 8.3mA.

 

Packaged in a 14-SOIC (0.154", 3.90mm Width) surface mount configuration, the UC3842AD operates within an ambient temperature range of 0°C to 70°C. Its output configuration is positive and isolation capable, functioning as a transistor driver for single output phases.

 

This controller is optimized for applications requiring precise current limiting and enhanced load response characteristics. It also includes undervoltage lockout (UVLO) with hysteresis and double pulse suppression for robust operation.

UC3842AD Quick Information

Product Type: DC DC Switching Controller
Canonical Name: UC3842AD Current Mode PWM Controller
Subcategory: DC DC Switching Controllers

UC3842AD Compliance

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

UC3842AD Estimated Pricing

Qty Low High
1+ $0.60 $0.60

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

UC3842AD Features

  • Current mode PWM controller for power supplies.
  • Operates from 10V to 30V supply voltage.
  • Supports up to 500kHz switching frequency.
  • Available in 14-SOIC surface mount package.
  • Wide operating temperature range of 0°C to 70°C.

UC3842AD Applications

  • Ideal for off-line converters.
  • Suitable for DC-DC power supplies.
  • Used in Boost converter designs.
  • Applicable for Buck converter designs.
  • Supports Flyback converter designs.

UC3842AD FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range for the UC3842AD?

The UC3842AD operates within a voltage range of 10V to 30V.

What is the maximum duty cycle of the UC3842AD?

The maximum duty cycle for the UC3842AD is 96%.

What is the maximum switching frequency for this PWM controller?

The UC3842AD can operate at switching frequencies up to 500kHz.

What is the operating temperature range for the UC3842AD?

The operating temperature range for the UC3842AD is 0°C to 70°C.

What package type is the UC3842AD available in?

The UC3842AD is available in a 14-SOIC package.

What are the supported topologies for the UC3842AD?

The UC3842AD supports Boost, Buck, Flyback, and Forward topologies.

What is the start-up current for the UC3842A family?

The start-up current for the UC3842A family is less than 0.5mA.

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