Professional IC Distribution & Technical Solutions

Global leader in semiconductor components distribution and technical support services, empowering your product innovation and industry advancement

Product Catalog Contact Us
Home > ST05 > UC3842A

UC3842A Specifications

Detailed technical information and Application Scenarios

Product Details

PartNumberManufactorQuantityAvailability
UC3842AST440Yes

UC3842A is a high-performance current-mode PWM controller manufactured by STMicroelectronics.

The UC3842A is a high-performance current-mode PWM controller manufactured by STMicroelectronics.

Specifications:

  • Input Voltage (VCC): 8V to 30V (operating range)
  • Under-Voltage Lockout (UVLO): 7.6V (turn-on), 7.2V (turn-off)
  • Output Current (Peak): ±1A (sink/source)
  • Oscillator Frequency Range: Up to 500kHz
  • Duty Cycle Range: 0% to 100%
  • Reference Voltage (VREF): 5V (±1% accuracy)
  • Current Sense Comparator Threshold: 1V
  • Error Amplifier Gain Bandwidth: 1MHz
  • Operating Temperature Range: -40°C to +85°C
  • Package Options: PDIP-8, SO-8

Descriptions:

  • The UC3842A is designed for offline and DC-DC converter applications.
  • It features a trimmed oscillator for precise frequency control.
  • Includes a high-gain error amplifier for voltage regulation.
  • Provides cycle-by-cycle current limiting for protection.

Features:

  • Current-Mode Control: Improves loop response and simplifies compensation.
  • Automatic Feed-Forward Compensation: Enhances line regulation.
  • Pulse-by-Pulse Current Limiting: Prevents transformer saturation.
  • Internal Soft-Start: Reduces inrush current.
  • Low Start-Up Current: Typically 0.5mA.
  • Latching PWM for Overvoltage Protection (OVP).
  • Totem-Pole Output for Direct MOSFET Drive.

For detailed datasheets, refer to STMicroelectronics' official documentation.

Request Quotation

Part Number:
Quantity:
Target Price($USD):
Email:
Contact Person:
Additional Part Number
Quantity (Additional)
Special Requirements
Verification: =

Recommended Products

  • L6560 ,147,DIP8

    L6560** is a **Power Factor Corrector (PFC) controller** manufactured by **STMicroelectronics**.

  • L78M15ABV ,150,TO220-3

    L78M15ABV** is a positive voltage regulator manufactured by **STMicroelectronics**.

  • TDA8174 ,150,ZIP

    TDA8174 is a vertical deflection output amplifier manufactured by SGS-THOMSON (now STMicroelectronics).

  • M4094,OKI,25,DIP16

    TX-FB16,,25,DIP16

Sales Support

Our sales team is ready to assist with:

  • Fast quotation
  • Price Discount
  • Technical specifications
Contact sales