• UC2843AD8TR SOIC-8
UC2843AD8TR SOIC-8

UC2843AD8TR

Current Mode PWM Controller -0.1V to 11V 1A 500kHz 8-Pin SOIC T/R

Quantity Unit Price(USD) Ext. Price
1000 $0.385 $385.00
500 $0.404 $202.00
100 $0.472 $47.20
30 $0.532 $15.96
10 $0.592 $5.92
1 $0.712 $0.71

Inventory:8,238

*The price is for reference only.
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Overview of UC2843AD8TR

The UC2843AD8TR is a current-mode PWM controller IC designed for power management applications. It features a precision reference, high-performance voltage error amplifier, current-sensing comparator, and a high-current totem-pole output. This IC is suitable for controlling DC-DC converters, switching regulators, and other power supply circuits.

Pinout

(Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.)

  • OUT: Output Pin
  • RT/CT: Oscillator Timing Pin
  • GND: Ground Connection
  • FB: Feedback Pin
  • Comp: Compensation Pin
  • VCC: Positive Power Supply

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the UC2843AD8TR IC for a visual representation.

Key Features

  • Current-Mode Control: The UC2843AD8TR utilizes current-mode control for improved transient response and cycle-by-cycle current limiting.
  • Precise Voltage Reference: Incorporates a precise internal voltage reference for accurate regulation of output voltage.
  • Adaptive PWM Operation: Features adaptive PWM operation to optimize efficiency and performance over a wide range of load conditions.
  • Programmable Oscillator: Allows flexibility in setting the switching frequency through an external resistor and capacitor.
  • Short-Circuit Protection: Offers built-in protection against output short circuits for increased reliability.

Note: For detailed technical specifications, please refer to the UC2843AD8TR datasheet.

Application

  • DC-DC Converters: Ideal for controlling and regulating DC-DC converters in power supply designs.
  • Switching Regulators: Suitable for use in switching regulator circuits for efficient power management.
  • Power Supply Systems: Commonly used in various power supply systems requiring precise voltage regulation.

Functionality

The UC2843AD8TR is a current-mode PWM controller that provides accurate regulation of output voltage in power management applications. It offers high performance and reliability for controlling DC-DC converters and switching regulators.

Usage Guide

  • Input Power: Connect VCC (Pin 6) to the positive supply voltage.
  • Feedback Loop: Use the FB (Pin 4) and Comp (Pin 5) pins to configure the feedback loop for desired output regulation.
  • Output Connection: Connect the output load to the OUT (Pin 1) pin with proper current handling capabilities.

Frequently Asked Questions

Q: Can the UC2843AD8TR handle high current loads?
A: Yes, the UC2843AD8TR features a high-current totem-pole output stage capable of driving high current loads efficiently.

Q: Is the UC2843AD8TR suitable for automotive applications?
A: Yes, the UC2843AD8TR is designed to meet automotive standards and can be used in automotive power management systems.

Equivalent

For similar functionalities, consider these alternatives to the UC2843AD8TR:

  • UC3843: A similar current-mode PWM controller from Texas Instruments with extended features for power supply applications.
  • TL494: This PWM controller IC offers comparable performance to the UC2843AD8TR and is widely used in power management circuits.

UC2843AD8TR

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Topology Boost, Buck, Buck boost, Flyback, Forward Control mode Peak current mode
Duty cycle (max) (%) 100 Switching frequency (max) (kHz) 500
Features Adjustable switching frequency, Current limiting, Dead time control, Error amplifier, Multi-topology UVLO thresholds on/off (V) 8.4/7.6
Operating temperature range (°C) -40 to 85 Rating Catalog
Gate drive (typ) (A) 1 Vin (max) (V) 28

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