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UC3844AD1

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UC3844AD1

IC REG CTRLR BST FLYBK ISO 8SOIC

Manufacturer: STMicroelectronics

Categories: DC DC Switching Controllers

Quality Control: Learn More

The STMicroelectronics UC3844AD1 is a high-performance, fixed-frequency current-mode PWM controller. Designed for boost, flyback, and isolated output topologies, this device features a ±1% reference voltage and a 48% maximum duty cycle. Its operating frequency can be set up to 500kHz, offering flexibility in component selection and power density. The UC3844AD1 includes features such as undervoltage lockout with hysteresis, current-mode control for superior transient response and inherent pulse-by-pulse current limiting, and a soft-start function. The output stage is a high-side, N-channel MOSFET driver. This component is suitable for a wide range of applications including power supplies for industrial automation, consumer electronics, and lighting systems. It is available in an 8-SOIC package and operates within a temperature range of 0°C to 70°C.

Additional Information

Series: -RoHS Status: RoHS non-compliantManufacturer Lead Time: No lead time information availableProduct Status: ObsoletePackaging: Tube
Technical Details:
PackagingTube
Package / Case8-SOIC (0.154"", 3.90mm Width)
Output TypeTransistor Driver
Mounting TypeSurface Mount
FunctionStep-Up, Step-Up/Step-Down
Operating Temperature0°C ~ 70°C (TA)
Output ConfigurationPositive, Isolation Capable
Frequency - SwitchingUp to 500kHz
TopologyBoost, Flyback
Voltage - Supply (Vcc/Vdd)10V ~ 30V
Supplier Device Package8-SOIC
Synchronous RectifierNo
Control FeaturesFrequency Control
Serial Interfaces-
Output Phases1
Duty Cycle (Max)48%
Clock SyncNo
Number of Outputs1

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STMicroelectronics FAQs

STMicroelectronics manufactures a broad range of semiconductor components, with a strong focus on microcontrollers, power electronics, and analog technologies.

STMicroelectronics’ core components include:

  • Microcontrollers (MCUs) and microprocessors (MPUs)
  • Power semiconductors (MOSFETs, IGBTs, SiC devices)
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  • Discrete components (diodes, transistors, rectifiers)
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STMicroelectronics specializes in energy-efficient, high-performance solutions for embedded systems and power management applications.

STMicroelectronics serves industries that require energy efficiency, embedded control, and advanced sensing technologies.

STMicroelectronics’ key industries include:

These industries rely on STMicroelectronics for power efficiency, system integration, and reliable semiconductor performance.

STMicroelectronics is known for microcontrollers, power electronics, and sensor technologies.

Key STMicroelectronics product lines include:

  • STM32 series - ARM-based microcontrollers for embedded applications
  • STM8 series - 8-bit microcontrollers for cost-sensitive designs
  • Stellar automotive MCUs - next-generation microcontrollers for vehicle architectures
  • STSPIN series - motor drivers and motion control ICs
  • VIPer series - power conversion ICs for offline power supplies
  • STMems (MEMS sensors) - motion, environmental, and pressure sensor
  • Automotive SiC portfolio - silicon carbide devices for EV power systems
  • ST25 series - NFC/RFID solutions for contactless applications
  • STGAP3S - next-generation gate driver for power electronics
Integrated Circuit FAQs

An integrated circuit (IC) is a semiconductor chip that contains transistors, resistors, capacitors, and other electronic components on a single silicon substrate. ICs are the foundation of modern electronics and power devices such as smartphones, computers, automotive systems, and industrial equipment.

Integrated circuits work by routing electrical signals through microscopic semiconductor components fabricated onto a silicon chip. Depending on the design, ICs can process, amplify, store, or control electronic data.

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