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Product Detailed Parameters
- Description：IC OFFLINE SWITCH FLYBACK 10DIP
- Series：VIPer™ plus
- Mfr：STMicroelectronics
- Package：Tube
- Output Isolation：Isolated
- Internal Switch(s)：Yes
- Voltage - Breakdown：800V
- Topology：Flyback
- Voltage - Start Up：14 V
- Voltage - Supply (Vcc/Vdd)：8.5V ~ 23.5V
- Duty Cycle：80%
- Frequency - Switching：60kHz
- Fault Protection：Current Limiting, Over Temperature, Over Voltage, Short Circuit
- Control Features：-
- Operating Temperature：-40°C ~ 150°C (TJ)
- Package / Case：10-SDIP (0.300", 7.62mm)
- Supplier Device Package：10-SDIP
- Mounting Type：Through Hole
- Grade：-
- Qualification：-
- Power (Watts)：16 W
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Overview
The VIPER28LE is an offline switch from the VIPerPlus family, designed for flyback AC/DC converters. It integrates an 800V rugged power MOSFET with a PWM current-mode controller. The device operates at a fixed frequency of 60kHz and supports a maximum duty cycle of 80%. It functions within a supply voltage range of 8.5V to 23.5V and delivers up to 16W of output power. The component utilizes a 10-SDIP package for through-hole mounting.
Feature Summary
- Integrates an 800V avalanche-rugged power MOSFET with a PWM current-mode controller for high-voltage off-line conversion.
- Features adjustable extra power timer (EPT) to sustain overload conditions temporarily while maintaining regulation.
- Includes comprehensive protection mechanisms such as dual-level overcurrent protection, output overvoltage, short-circuit, and thermal shutdown.
- Operates in burst mode under light load to meet stringent energy-saving standards with low no-load consumption.
Applications
- Offline AC/DC power supplies
- Flyback converter topologies
- General purpose isolated power conversion
Procurement Notes
Verify the specific suffix 'LE' against official STMicroelectronics documentation to confirm pinout and electrical characteristics. Ensure compatibility with 10-SDIP through-hole mounting requirements. Confirm availability status as this part number may be subject to discontinuation or lifecycle changes. Cross-reference datasheet parameters for operating temperature and voltage ratings before integration.
Selection Notes
Select the VIPER28LE when a fixed 60kHz switching frequency is required for flyback applications. This variant is suitable for designs needing through-hole packaging in a 10-SDIP format. Consider its 800V breakdown voltage for wide-range input applications. Evaluate the 16W power capability against system load requirements. Verify that the integrated protections align with safety standards.
Part Context
The VIPER28LE belongs to the VIPerPlus family of high-voltage converters from STMicroelectronics. This series combines a power MOSFET with intelligent control circuitry to simplify SMPS design. The family targets energy-efficient power adapters and chargers. Other variants in the series offer different frequencies and packages to suit diverse application needs.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source material. Consult official STMicroelectronics documentation for recommended replacements or updated product lines.
