UC3842BN - Brand New STMicroelectronics AC DC Converters, Offline Switchers
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Description
The UC3842BN is a high performance fixed frequency current mode controller designed for Off−Line and DC−DC converter applications. It offers a cost-effective solution with minimal external components. This integrated circuit features a trimmed oscillator for precise duty cycle control, a temperature compensated reference, high gain error amplifier, current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET. It also includes protective features such as input and reference undervoltage lockouts, cycle-by-cycle current limiting, programmable output deadtime, and a latch for single pulse metering. The UC3842BN is available in 8-pin dual-in-line and surface mount (SOIC-8) plastic packages, as well as 14-pin plastic surface mount (SOIC-14) package with separate power and ground pins for the totem pole output stage.
Specifications and features
- Trimmed Oscillator for Precise Frequency Control
- Oscillator Frequency Guaranteed at 250 kHz
- Current Mode Operation to 500 kHz
- 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
- Pb-Free Packages are Available
Application Scenarios
The UC3842BN is commonly used in AC DC converters and offline switchers. It is suitable for various applications that require precise frequency control, current mode operation, and high current totem pole output. With its protective features and wide availability in different packages, it offers flexibility and reliability in many electronic designs.
Comparison
Advantages- High performance fixed frequency current mode controller
- Cost-effective solution with minimal external components
- Trimmed oscillator for precise duty cycle control
- Temperature compensated reference
- High gain error amplifier
- Current sensing comparator
- High current totem pole output
Disadvantages- None known
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Similar parts: 1587 , Click to view
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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
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Popular parts of the same kind
- Datasheet: Download UC3842BN
- Chipdatas Part: CD92-UC3842BN
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
- Free Shipping: Yes
- Prority Shipping: Yes, 3-5 days
- Last Updated: 2024/10/01 08:43 +0800
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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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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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