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Description
The UTC UC3842B/3843B is an electronic component model specifically designed for off-line and dc-to-dc converter applications. It offers a cost-effective solution with minimal external components. The UC3842B has UVLO thresholds of 16V (on) and 10V (off), making it ideally suited for off-line converters. On the other hand, the UC3843B is tailored for lower voltage applications with UVLO thresholds of 8.4V (on) and 7.6V (off).
Specifications and features
Some key specifications and features of the UC3843BL include:
- Trimmed oscillator for precise frequency control
- Oscillator frequency guaranteed at 250kHz
- Current mode operation up to 500kHz
- Automatic feed forward compensation
- Latching PWM for cycle-by-cycle current limiting
- Internally trimmed reference with undervoltage lockout
- High current totem pole output
- Undervoltage lockout with hysteresis
- Low startup and operating current
Application Scenarios
The UC3843BL can be used in various electronic applications, including:
- Off-line converters
- Dc-to-dc converters
- Power supply systems
- Inverters
- LED drivers
Comparison
Advantages:
- Cost-effective solution
- Minimal external components required
- Trimmed oscillator for precise frequency control
- High current totem pole output
Disadvantages:
- Low startup and operating current
- Not suitable for high voltage applications
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Datasheet
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Shopping guide
Delivery period:
- - Will ship out in 2-3 days
- - DHL Express: 3-7 business days
- - DHL eCommerce: 12-22 business days
- - FedEx International Priority: 3-7 business days
- - EMS: 10-15 business days
Shipping fee:
- - Automatic Email notification (above 5 times)
- - View in your order page
Shipping option:
DHL, FedEx, EMS, SF Express, and Registered Air MailShipping tracking:
- - Automatic Email notification (above 5 times)
- - View in your order page
How to Buy:
- - In-stock, Add to cart > Check out > Submit order > Complete payment >Delivery.
- - Inquiry, Add to inquiry sheet/Submit bom/inquire file/Send email us > Quote > Place order > Complete payment >Delivery.
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Payment:
- - Paypal,Credit Card includes Visa, Master, American Express.
- - Wire transfer, include Local bank transfer.
- - Western Union.
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Additional Information
- Datasheet: Download UC3843BL
- Chipdatas Part: CD94-UC3843BL
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
- Free Shipping: Yes
- Prority Shipping: Yes, 3-5 days
- Last Updated: 2024/06/03 08:49 +0800
Refund
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- Full Refund if you don't receive your order
- Full or Partial Refund , If the item is not as described
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Payment Method
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The fee is charged according to the rule of PayPal.
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The fee is charged according to the rule of PayPal.
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Western Union charge US$0.00 banking fee.
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We recommend to use bank transfer for large orders to save on handling fees.
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