Overview
The VIPER17LDTR, produced by STMicroelectronics, is a highly integrated, energy-efficient PWM controller IC designed for offline power converters in low-power applications. It features an internal 800 V avalanche rugged power MOSFET and is part of the VIPerPlus family. This device is optimized for high efficiency, low standby power consumption, and includes multiple protection features, making it suitable for a wide range of consumer and industrial applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Drain-to-source (ground) voltage (VDRAIN) | 800 | V |
| Repetitive avalanche energy (EAV) | 2 | mJ |
| Pulse drain current (IDRAIN) | 2.5 | A |
| Operating frequency (FOSC) | 60 kHz (L type), 115 kHz (H type) | kHz |
| Standby power consumption | < 30 mW at 265 VAC | mW |
| Supply voltage (VDD) | 4.5 to 30 V | V |
| Thermal shutdown temperature (TSD) | 150 to 160 °C | °C |
| Package type | NSOIC-16 |
Key Features
- 800 V avalanche rugged power section
- PWM operation with frequency jittering for low EMI
- Operating frequency: 60 kHz for L type, 115 kHz for H type
- Standby power consumption below 30 mW at 265 VAC
- Adjustable and accurate overvoltage protection
- On-board soft-start and safe auto-restart after fault conditions
- Hysteresis thermal shutdown
- Brown-out protection with hysteresis
- Current mode conversion with adjustable current limit set point
- Burst-mode operation at no load or very light load
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
- LED lighting systems
- Industrial control systems, smart meters, and home automation
Q & A
- What is the maximum drain-to-source voltage of the VIPER17LDTR?
The maximum drain-to-source voltage is 800 V.
- What are the operating frequencies for the L and H types of VIPER17LDTR?
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 VIPER17LDTR at 265 VAC?
The standby power consumption is less than 30 mW at 265 VAC.
- Does the VIPER17LDTR have overvoltage protection?
Yes, it has adjustable and accurate overvoltage protection.
- What is the thermal shutdown temperature range of the VIPER17LDTR?
The thermal shutdown temperature range is between 150 °C and 160 °C.
- What package types are available for the VIPER17LDTR?
The VIPER17LDTR is available in NSOIC-16 and other package types such as DIP-7 and tape and reel.
- Does the VIPER17LDTR support burst-mode operation?
Yes, it supports burst-mode operation at no load or very light load conditions.
- What is the purpose of the CONT pin in the VIPER17LDTR?
The CONT pin is used for current limit set point adjustment and output voltage monitoring.
- Does the VIPER17LDTR have brown-out protection?
Yes, it has brown-out protection with hysteresis.
- What are some common applications of the VIPER17LDTR?
Common applications include adapters, auxiliary power supplies, SMPS for consumer electronics, LED lighting systems, and industrial control systems.
