Description
The UC2843N is a PWM controller IC from Texas Instruments, designed for off-line and DC-to-DC converters. It features automatic feedforward compensation, pulse-by-pulse current limiting, and enhanced load-response characteristics, making it suitable for various power management applications.
This IC offers high-frequency operation up to 500 kHz, low start-up current (<1 mA), and an undervoltage lockout with hysteresis. Its double-pulse suppression and high-current totem-pole output enable efficient pulse-width modulation.
The UC2843N is commonly used in switch-mode power supplies, voltage regulators, battery chargers, and other power management applications. It can also be utilized in offline and DC-to-DC converters, motor control circuits, LED drivers, and general-purpose power supply designs.
Features
According to the product information, the features of the UC2843N are:
- Optimized for off-line and DC-to-DC converters
- Low start-up current (<1mA)
- Automatic feedforward compensation
- Pulse-by-pulse current limiting
- Enhanced load-response characteristics
- Undervoltage lockout with hysteresis
- Double-pulse suppression
- High-current totem-pole output
- Internally trimmed bandgap reference
- Up to 500-kHz operation
- Error amplifier with low output resistance
These features make the UC2843N suitable for various power management applications, including switch-mode power supplies, voltage regulators, battery chargers, and more.
Package
The package type of UC2843N is PDIP-8 (Plastic Dual In-Line Package, 8 pins).
Pinout
The product information does not explicitly mention the pin count or function of the UC2843N IC. However, the package type mentioned is PDIP-8, which indicates that it has 8 pins.
Based on general knowledge about PWM controllers like the UC2843N, we can assume that some common functions are:
- Pins 1 and 2: Input for pulse-width modulation.
- Pin 3: Output for driving power devices (e.g., MOSFETs, IGBTs).
- Pins 4-7: Unused or for future use.
- Pin 8: Ground.
Please note that this is not explicitly stated in the product information but can be inferred based on typical pin functions of PWM controllers.
Manufacturer
The manufacturer of the UC2843N is Texas Instruments (TI), a well-known American technology company that specializes in semiconductor solutions for various industries, including power management, analog-to-digital conversion, and embedded processing. TI's product portfolio includes microcontrollers, amplifiers, sensors, and other components used in wide range of applications, from consumer electronics to industrial control systems. As a leading player in the semiconductor industry, Texas Instruments is recognized for its innovation, quality, and global reach.
Applications
The UC2843N is commonly used in switch-mode power supplies, voltage regulators, battery chargers, and other power management applications. It can also be utilized in offline and DC-to-DC converters, motor control circuits, LED drivers, and general-purpose power supply designs.
Equivalent
Based on the features and specifications of the UC2843N, some equivalent products from Texas Instruments (TI) or other manufacturers could be:
- TI's UC3843A
- STMicroelectronics' L6564
- ON Semiconductor's NCP3801
- Analog Devices' ADP8860
These devices share similar characteristics such as PWM control, current limiting, and undervoltage lockout, making them suitable alternatives for power management applications.
Payment
Shipping & Packing
Warranty
Leds are normal. No claims. I'm a tractor.