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 > ST > UC3843BD

UC3843BD Specifications

Detailed technical information and Application Scenarios

Product Details

PartNumberManufactorQuantityAvailability
UC3843BDST500Yes

UC3843BD is a high-performance current-mode PWM controller manufactured by ON Semiconductor.

The UC3843BD is a high-performance current-mode PWM controller manufactured by ON Semiconductor.

Specifications:

  • Input Voltage (VCC): 8.5V to 30V
  • Operating Frequency: Up to 500kHz
  • Output Duty Cycle: 0% to 100%
  • Output Current (Peak): ±1A
  • Reference Voltage: 5V (±1% tolerance)
  • Low Startup Current: <1mA
  • Undervoltage Lockout (UVLO): 8.4V (on) / 7.6V (off)
  • Package: SOIC-8

Descriptions:

The UC3843BD is designed for DC-DC converter applications, providing precise control for switching power supplies. It features a trimmed oscillator for accurate duty cycle control, current sensing, and a totem-pole output stage for driving power MOSFETs.

Features:

  • Current-Mode Operation for improved loop response
  • Automatic Feed-Forward Compensation
  • Latching PWM for cycle-by-cycle current limiting
  • Internal Soft-Start
  • High-Current Totem-Pole Output
  • Low RO (Output Impedance) for fast switching
  • Under-Voltage Lockout (UVLO) with hysteresis

This IC is widely used in offline and DC-DC converters, battery chargers, and power supply applications.

Request Quotation

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

Recommended Products

  • LK115D25-TR ,2400,SOP8

    LK115D25-TR is a low-dropout (LDO) voltage regulator manufactured by STMicroelectronics (ST).

  • LC21B-6 ,218,DIP8

    LC21B-6** is a component manufactured by **STMicroelectronics (ST)**.

  • 4632682 ,181,TO220-7

    Part Number:** 4632682 **Manufacturer:** STMicroelectronics (ST) ### **Specifications:** - **Category:** Integrated Circuit (IC) - **Type:** Likely a microcontroller, sensor, or power management IC (exact function depends on specific datasheet)

  • DH36470A,SAMSUNG,26,DIP42

    AM25LS2518PC,AMD,26,DIP16

Sales Support

Our sales team is ready to assist with:

  • Fast quotation
  • Price Discount
  • Technical specifications
Contact sales