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Description
Power Factor Correction PFC and PWM Controller Combo
Package: SOIC
No of Pins: 16
Container: Rail
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General Description
The ML4800 is a controller for power factor corrected, switched mode power supplies. Power Factor Correction (PFC) allows the use of smaller, lower cost bulk capacitors, reduces power line loading and stress on the switching FETs, and results in a power supply that fully complies with IEC1000-3-2 specification. Intended as a BiCMOS version of the industry-standard ML4824, the ML4800 includes circuits for the implementation of leading edge, average current, “boost” type power factor correction and a trailing edge, pulse width modulator (PWM). It also includes a TriFault Detect? function to help ensure that no unsafe conditions will result from single component failure in the PFC. Gate-drivers with 1A capabilities minimize the need for external driver circuits. Low power requirements improve efficiency and reduce component costs.
An over-voltage comparator shuts down the PFC section in the event of a sudden decrease in load. The PFC section also includes peak current limiting and input voltage brownout protection. The PWM section can be operated in current or voltage mode, at up to 250kHz, and includes an accurate 50% duty cycle limit to prevent transformer saturation.
Features
● Internally synchronized leading-edge PFC and trailing-edge PWM in one IC
● TriFault DetectTM for UL1950 compliance and enhanced safety
● Slew rate enhanced transconductance error amplifier for ultra-fast PFC response
● Low power: 200μA startup current, 5.5mA operating current
● Low total harmonic distortion, high PF
● Reduced ripple current in storage capacitor between PFC and PWM sections
● Average current, continuous boost leading edge PFC
● PWM configurable for current-mode or voltage mode operation
● Current fed gain modulator for improved noise immunity
● Over voltage and brown-out protection, UVLO, and soft start
Preview of the first 3 pages of the data sheet
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204 buyer reviews from Australia
Amanda Cox
Length of registration:7 years
I recently ordered an IC ML4800CS from your company and I am very pleased with the product. The IC is of high quality and performs well in all the applications I have used it in. The IC is also very easy to use and the instructions are clear and concise. I am also impressed with the customer service I received from your team. They were very helpful and knowledgeable in answering my questions. Over
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03/17/2023
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All UTSOURCE purchases have a 60 days money back return policy, plus a 90 days UTSOURCE warranty against any manufacturing defects.This warranty shall not apply to any item where defects have been caused by improper customer assembly, failure by customer to follow instructions, product modification, negligent or improper operation.
ML4800CS
ML4800CS has several brands around the world that may have alternate names for ML4800CS due to regional differences or acquisition. ML4800CS may also be known as the following names:
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