UC3877DWP - Brand New Texas Instruments DC DC Switching Controllers
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Description
The UC3877DWP is an electronic component model that belongs to the category of DC DC Switching Controllers. It is part of the UC3844, UC3845 series which are high-performance fixed frequency current mode controllers. These controllers are designed specifically for Off-Line and DC-to-DC converter applications, providing a cost-effective solution with minimal external components. The UC3877DWP integrated circuit features an oscillator, a temperature-compensated reference, a high-gain error amplifier, a current sensing comparator, and a high-current totem pole output, making it ideally suited for driving a power MOSFET.
Additionally, the UC3877DWP includes protective features such as input and reference undervoltage lockouts with hysteresis, cycle-by-cycle current limiting, a latch for single pulse metering, and a flip-flop that blanks the output every other oscillator cycle, allowing for programmed output dead times ranging from 50% to 70%. The UC3877DWP is available in an 8-pin dual-in-line plastic package, as well as the 14-pin plastic surface mount (SOIC-14) package which has separate power and ground pins for the totem pole output stage. The UCX844 variant of this model has UVLO thresholds of 16 V (on) and 10 V (off) which make it well-suited for off-line converters, whereas the UCX845 variant is tailored for lower voltage applications with UVLO thresholds of 8.5 V (on) and 7.6 V (off).
Specifications and Features
- Current Mode Operation to 500 kHz Output Switching Frequency
- Output Deadtime Adjustable from 50% to 70%
- Automatic Feed Forward Compensation
- Latching PWM for Cycle-By-Cycle Current Limiting
- Internally Trimmed Reference with Undervoltage Lockout
- High Current Totem Pole Output
- Input Undervoltage Lockout with Hysteresis
- Low Startup and Operating Current
- Direct Interface with ON Semiconductor SENSEFET™ Products
- Pb-Free Packages are Available
Application Scenarios
The UC3877DWP is commonly used in various applications including Off-Line and DC-to-DC converters. Its high performance and flexible parameter adjustments make it suitable for a range of power management systems. Whether it is for industrial, automotive, or consumer electronics, the UC3877DWP can meet the requirements of different scenarios.
Comparison
Advantages- High-performance fixed frequency current mode controller
- Cost-effective solution with minimal external components
- Flexible output deadtime adjustment
- Protective features for reliable operation
- Wide availability in different package options
Disadvantages- May not be suitable for applications with specific voltage requirements
- Limited to a maximum output switching frequency of 500 kHz
- Requires familiarity with power management systems for optimal use
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Similar parts: 3823 , Click to view
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Datasheet
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Shopping guide
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Popular parts of the same kind
- Datasheet: Download UC3877DWP
- Chipdatas Part: CD94-UC3877DWP
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- Last Updated: 2024/09/30 23:37 +0800
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