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Product Detailed Parameters
- Description：IC PFC CTR AVERAGE 220KHZ 16SOIC
- Series：-
- Mfr：Texas Instruments
- Package：Tube
- Mode：Average Current
- Frequency - Switching：6kHz ~ 220kHz
- Voltage - Supply：12V ~ 17V
- Operating Temperature：0°C ~ 70°C
- Mounting Type：Surface Mount
- Package / Case：16-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：16-SOIC
- Current - Startup：150 µA
- Grade：-
- Qualification：-
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Overview
The UCC3818AD is a BiCMOS power factor preregulator controller manufactured by Texas Instruments. It operates in average current mode to achieve high power factor correction. The device supports a switching frequency range from 6 kHz to 220 kHz and features a maximum duty cycle of 95 percent. It functions with a supply voltage between 12 V and 17 V, drawing a startup current of 150 µA. The component is housed in a 16-pin SOIC package and is rated for operation within an ambient temperature range of -40°C to +85°C.
Feature Summary
- Implements average current mode control for precise power factor correction
- Integrates a soft-start circuit to limit inrush current during startup
- Includes comprehensive protection mechanisms against overvoltage and undervoltage conditions
Applications
- Power factor correction stages in AC-DC power supplies
- Preregulators for offline power conversion systems
- High-efficiency power factor correction modules
Procurement Notes
Verify the specific suffix 'AD' confirms the industrial temperature grade (-40°C to +85°C) and SOIC-16 package variant. Confirm RoHS compliance status as per the latest manufacturer documentation. Ensure the ordering part number matches the required tape-and-reel or tube packaging format for your assembly process.
Selection Notes
Select this component when designing systems requiring active power factor correction with average current mode control. It is suitable for applications needing operation up to 220 kHz. Consider the -40°C to +85°C operating range for industrial environments. Compare against the UCC3818A series if commercial temperature grades are sufficient for the target application.
Part Context
The UCC3818AD belongs to the UCCx81xA family of BiCMOS power factor preregulators from Texas Instruments. This family provides integrated solutions for improving input power quality. The device combines analog control logic with power stage drivers to manage the boost converter topology efficiently.
Replacement Considerations
The UCC3818ADG4 is a lead-free version of the same functional device. For updated designs, consider the UCC2818AD which shares similar functionality but may have different thermal or electrical specifications.
