DistyParts Icon
UC3844AD The ST UC3844AD is a current mode PWM controller designed for AC/DC and DC/DC converters. It features a 500kHz operating frequency and a 50% duty cycle.
Mfr Part #:

UC3844AD

Available from 1 distributors
Mfr Name: ST
ST
The ST UC3844AD is a current mode PWM controller designed for AC/DC and DC/DC converters. It features a 500kHz operating frequency and a 50% duty cycle.
✓ Total Stock: 76 pcs
$ Price Range: $1.92

UC3844AD Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Partservice ✓
Non-Authorised Inventory information
76 pcs
On Request
76 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.

UC3844AD Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Duty Cycle
Frequency
Operating Temperature
Output Current
Storage Temperature
Tape & Reel
Voltage
View Similar Products (0)

UC3844AD Description

Short technical summary and product information.

The UC3844AD from ST is a current mode Pulse Width Modulation (PWM) controller, suitable for offline and DC-DC power supply applications. This device operates with a maximum frequency of 500kHz and a nominal duty cycle of 50%. It includes features such as low start-up current (<0.5mA), automatic feedforward compensation, and pulse-by-pulse current limiting.

 

The controller has an undervoltage lockout (UVLO) threshold of 16V/10V, ensuring reliable operation within its specified voltage range. The UC3844AD is housed in a 14-pin SOIC package and operates within an ambient temperature range of 0°C to 70°C. It is noted as 'NOT RECOMMENDED FOR NEW DESIGNS'.

 

This part is an improved version of the UCx84x family, offering enhanced load response characteristics and double pulse suppression. Its high-current totem pole output and internally trimmed bandgap reference contribute to its performance in power management circuits.

UC3844AD Quick Information

Product Type: Current Mode PWM Controller
Series: UC3844A
Canonical Name: UC3844AD Current Mode PWM Controller
Subcategory: PWM Controllers

UC3844AD Compliance

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

UC3844AD Estimated Pricing

Qty Low High
1+ $1.92 $1.92

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

UC3844AD Features

  • Current mode PWM controller.
  • Operates up to 500kHz frequency.
  • Features 16V/10V undervoltage lockout.
  • Low start-up current below 0.5mA.
  • Available in SOIC package.

UC3844AD Applications

  • Optimized for offline converters.
  • Suitable for DC-DC converters.
  • Used in power supply designs.
  • Features enhanced load response.

UC3844AD FAQs

6 frequently asked questions generated from this part’s specifications.
What is the operating temperature range for the UC3844AD?

The operating temperature range for the UC3844AD is 0°C to 70°C.

What is the maximum operating frequency of the UC3844AD?

The UC3844AD operates at a maximum frequency of 500kHz.

What is the duty cycle for the UC3844AD?

The UC3844AD has a nominal duty cycle of 50%.

What are the undervoltage lockout (UVLO) levels for the UC3844AD?

The UC3844AD has UVLO levels of 16V and 10V.

What is the start-up current for the UC3844AD?

The start-up current for the UC3844AD is less than 0.5mA.

What is the package type for the UC3844AD?

The UC3844AD is supplied in a 14-pin SOIC (D) package.

Home
Account

Categories