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The UC3843 is a current-mode PWM (Pulse Width Modulation) controller IC from On Semiconductor, designed for efficient power management in switching power supplies. It provides precise control over the power conversion process, making it suitable for use in DC-DC converters, AC-DC power supplies, and other applications requiring efficient power regulation. The IC is available in a SOP-8 SMD package, ideal for compact and high-density designs.
Features
- Current-Mode Control: Provides enhanced performance and ease of compensation over voltage-mode control, offering better line regulation and cycle-by-cycle current limiting.
- High-Frequency Operation: Capable of operating at high frequencies, allowing for smaller component sizes and increased efficiency.
- Low Start-Up Current: Designed with low start-up current to minimize power consumption during initial power-up.
- Under-Voltage Lockout (UVLO): Ensures the IC remains inactive until the input voltage reaches a specific threshold, protecting the power supply from low voltage conditions.
- SOP-8 SMD Package: Compact surface-mount package for easy integration into modern PCB designs.
Specifications
- Supply Voltage: 8.4V to 30V
- Oscillator Frequency: 52 kHz typical
- Maximum Duty Cycle: 100%
- Start-Up Current: 0.5 mA typical
- Operating Temperature: -40°C to +85°C
- Package Type: SOP-8 (Small Outline Package)
- Pin Count: 8
Note: Product images are for illustrative purposes only and may differ from the actual product.
Returns Policy
Due to the type of products we sell, we accept limited returns. Below are the conditions where we can accept a return request.
1. Damaged During Shipment
If you receive a product damaged during shipment, please notify us within the 3 days of you receive the product, supported by the proper pictures and description. Once our support team accept the return, we will provide a replacement or a complete refund including the return shipping cost.2. Wrong Item Shipped
If your item looks different from what is shown in the image on our website, we will take the item back and provide a refund or replacement as per your choice.
Limitation of Returns
We don't accept the returns for the products damanged by improper use of the product. Moreover we don't accept the return, if the ordered product is not fit for any specific application. Please read the product specifications and datasheet before selecting and ordering a product. Returns are accepted only with 3 days from the date of delivery.Shipping
We ship to all over India with free shipping on all prepaid orders above 500. For Cash on Delivery orders INR 80 will be charged for orders below INR 599 and INR 30 will be charged for the orders above 599. Please contact to our support team at support@quartzcomponents.com for any question related to shipping.
Please note that the Minimum Order Value is INR 500 for COD orders.