Overview
The VIPER17LN, produced by STMicroelectronics, is a high-performance off-line converter designed for energy-efficient applications. It features an 800 V rugged power section, PWM control, and multiple protection mechanisms such as overcurrent, overvoltage, and thermal shutdown. The device is optimized for low EMI through frequency jittering and offers a standby power consumption of less than 30 mW at 265 VAC. It includes on-board soft-start, safe auto-restart after fault conditions, and hysteresis thermal shutdown, making it a reliable choice for various power supply applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Transistor Breakdown Voltage (V) | 800 | V |
| Drain Current (A) | 0.4 | A |
| RDS(on) (Ω) | 24 | Ω |
| Operating Frequency | 60 kHz (L type), 115 kHz (H type) | kHz |
| Standby Power | < 30 mW at 265 VAC | mW |
| Operating Temperature (°C) | -25 to 125 | °C |
| Package | DIP-7, SO16 narrow |
Key Features
- 800 V avalanche rugged power section
- PWM operation with frequency jittering for low EMI
- Adjustable current limit with set point adjustment
- Adjustable and accurate overvoltage protection
- On-board soft-start
- Safe auto-restart after fault conditions
- Hysteresis thermal shutdown
- Burst-mode operation for energy saving at no load or very light load
- Brown-out protection with hysteresis
Applications
- Adapters for PDA, camcorders, shavers, cellular phones, videogames
- Auxiliary power supply for LCD/PDP TV, monitors, audio systems, computers, industrial systems, LED drivers
- SMPS for set-top boxes, DVD players and recorders, white goods
Q & A
- What is the maximum breakdown voltage of the VIPER17LN?
The maximum breakdown voltage is 800 V. - What are the operating frequencies for the L and H types of VIPER17LN?
The operating frequencies are 60 kHz for the L type and 115 kHz for the H type. - What is the standby power consumption of the VIPER17LN at 265 VAC?
The standby power consumption is less than 30 mW. - Does the VIPER17LN have overvoltage protection?
Yes, it has adjustable and accurate overvoltage protection. - How does the VIPER17LN handle thermal issues?
The device features hysteresis thermal shutdown. - What is the purpose of the burst-mode operation in the VIPER17LN?
The burst-mode operation helps in energy saving at no load or very light load conditions. - Does the VIPER17LN have brown-out protection?
Yes, it includes brown-out protection with hysteresis. - What types of packages are available for the VIPER17LN?
The device is available in DIP-7 and SO16 narrow packages. - What is the maximum operating temperature for the VIPER17LN?
The maximum operating temperature is 125°C. - How does the VIPER17LN restart after a fault condition?
The device features safe auto-restart after fault conditions.
