UC3842 -Current Mode PWM Controller - LM3842 / TL3842

UC3842 Current Mode PWM Controller IC (LM3842/TL3842 Compatible)

The UC3842 is a high-performance fixed frequency current-mode PWM controller. It is specifically engineered for robust Off-Line and DC-to-DC converter applications. This integrated circuit minimizes external component count, simplifying your power supply designs. Key features include a precisely trimmed oscillator for accurate duty cycle control. It also boasts a temperature-compensated reference and a high-gain error amplifier. A current sensing comparator ensures reliable operation. Furthermore, its high-current totem pole output is perfect for driving Power MOSFETs efficiently. This versatile IC is an excellent choice for various power management solutions.

Specifications:

• Controller Type: Fixed Frequency Current-Mode PWM
• Start-Up Current: Low
• Duty Cycle Control: Precise (Trimmed Oscillator)
• Output Type: High Current Totem Pole
• Maximum Operating Frequency: 500kHz
• Protection: UVLO with Hysteresis, Maximum Duty Clamp
• Reference: Temperature Compensated
• Error Amplifier: High Gain
• Package Type: DIP (Dual In-line Package)
• Brand: ST, On, or Texas Instruments (depending on availability)

Key features and benefits:

• Fixed Frequency Current-Mode PWM Controller
• Low Start Up Current
• Maximum Duty Clamp
• UVLO with Hysteresis
• Operating Frequency up to 500kHz
• Trimmed oscillator for precise duty cycle control
• Temperature compensated reference
• High current totem pole output for driving Power MOSFETs

Applications:

• Off-Line Power Supplies
• DC-to-DC Converters
• Switching Power Supplies
• Battery Chargers
• LED Lighting Drivers

Package Includes:

*Image shown is a representation only.

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