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Description
The ML4825IP is a high frequency PWM controller designed for use in Switch Mode Power Supply designs running at frequencies up to 1MHz. It features minimal propagation delays and optimized slew rate and bandwidth for reliable high frequency operation. This controller can work in voltage or current mode and provides input voltage feed forward. It includes a 1V threshold current limit comparator for cycle by-cycle current limit and a soft-start cycle is initiated when the threshold exceeds 1.4V. The soft start pin also acts as a maximum duty cycle clamp. The controller also has under-voltage lockout with hysteresis for low startup current and drives the outputs low. The ML4825IP is similar in architecture and performance to the UC1825 controller, but includes additional features.
Specifications and Features
- Practical operation at switching frequencies up to 1.0MHz
- High current (2A peak) dual totem pole outputs
- Wide bandwidth error amplifier
- Fully latched logic with double pulse suppression
- Pulse-by-pulse current limiting
- Soft start and maximum duty cycle control
- Under voltage lockout with hysteresis
- Precision trimmed 5.1V bandgap reference
- Pin compatible improved replacement for UC1825
- Fast shut down path from current limit to outputs
- Outputs preset to known condition after under voltage lockout
- Soft start latch ensures full soft start cycle
- Outputs pull low for under voltage lockout
Application Scenarios
The ML4825IP is commonly used in Switch Mode Power Supply designs that require high frequency operation and reliable performance. It can be used in a variety of applications including power electronics, telecommunications, industrial control, and more.
Comparison
Advantages- Practical operation at high switching frequencies up to 1.0MHz
- High current dual totem pole outputs
- Wide bandwidth error amplifier
- Fully latched logic with double pulse suppression
- Pulse-by-pulse current limiting
- Soft start and maximum duty cycle control
- Precision trimmed 5.1V bandgap reference
- Pin compatible improved replacement for UC1825
- Fast shut down path from current limit to outputs
- Outputs preset to known condition after under voltage lockout
- Soft start latch ensures full soft start cycle
- Outputs pull low for under voltage lockout
DisadvantagesNo specific disadvantages have been identified for the ML4825IP PWM controller.
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Similar parts: 430483 , 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 ML4825IP
- Chipdatas Part: CD90-ML4825IP
- Warehouse: China, Hong Kong
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- Last Updated: 2024/09/20 09:12 +0800
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