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Product Detailed Parameters
- Description：IC PFC CTRLR CCM/DCM 84KHZ 16SOP
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR),Cut Tape (CT),Bulk
- Mode：Continuous Conduction (CCM), Discontinuous Conduction (DCM)
- Frequency - Switching：66kHz ~ 84kHz
- Voltage - Supply：11V ~ 16.5V
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：16-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：16-SOIC
- Current - Startup：100 µA
- Grade：-
- Qualification：-
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Overview
The FAN4800CMY is a PFC/PWM controller combination IC from onsemi, designed for power supplies consisting of boost PFC and PWM stages. It operates within a supply voltage range of 11V to 26V and supports switching frequencies between 66kHz and 84kHz. The device functions in both Continuous Conduction Mode (CCM) and Discontinuous Conduction Mode (DCM). It is housed in a 16-SOIC surface-mount package with a width of 7.50mm. The component is rated for an operating temperature range of -40°C to +105°C and features a humidity sensitivity level of 3.
Feature Summary
- Integrates internally synchronized leading-edge PFC and trailing-edge PWM control in a single IC.
- Supports average-current-mode operation for input-current shaping.
- Includes comprehensive protection mechanisms such as PFC over-voltage, under-voltage, feedback open-loop, and cycle-by-cycle current limiting.
- Features power-on sequence control, soft-start, and line sagging protection.
Applications
- Desktop PC Power Supply
- Internet Server Power Supply
- LCD TV/Monitor Power Supply
- UPS Systems
- Telecom System Power Supply
Procurement Notes
Verify the specific suffix 'MY' against official datasheets to confirm the SOP-16 package and reel/cut-tape availability. Confirm end-of-life status or obsolescence notifications prior to procurement, as this series may have discontinued variants. Ensure design-in compliance with RoHS standards and verify moisture sensitivity handling procedures for MSL 3 components during assembly.
Selection Notes
Select this component for designs requiring high integration of PFC and PWM functions with minimal external components. It is suitable for applications needing configurable PWM modes and robust protection features. Compare against pin-compatible alternatives like ML4800 if legacy board compatibility is required. Ensure the selected variant matches the required frequency range and package type for the target PCB layout.
Part Context
The FAN4800CMY belongs to the FAN4800 family of highly integrated power factor correction and pulse width modulation controllers. This family is engineered to reduce component count and simplify design complexity for boost PFC and PWM converter topologies. The CMY suffix typically denotes a specific package configuration and tape-and-reel delivery format within the broader product lineup.
Replacement Considerations
The FAN4800AU and FAN4800CU are documented as pin-to-pin compatible replacements. When substituting, verify that the switching frequency relationships (fRTCT vs fPFC/fPWM) match the original design requirements. Review application notes for necessary circuit adjustments when migrating from older FAN4800A/C or ML4800 versions.
