VIPER26LDTR - 800V 1.5A Off-Line Converter | STMicroelectronics
MPN: VIPER26LDTR β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.25 | $1.25 |
| 10 | $1.12 | $11.20 |
| 100 | $0.98 | $98.00 |
| 500 | $0.85 | $425.00 |
| 1,000 | $0.75 | $750.00 |
Drop-in alternatives for VIPER26LDTR β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
VIPER26LN
β Drop-Inπ Reference alternative (not in catalog)
VIPER27LD
β Drop-Inπ Reference alternative (not in catalog)
VIPER28LD
β Drop-Inπ Reference alternative (not in catalog)
VIPER26LDTR Maximum Ratings & Electrical Characteristics
| Input Voltage Range | 85 VAC to 265 VAC |
| Output Power | 8 W (typical, flyback) |
| Peak Current Limit | 1.5 A |
| Switching Frequency | 60 kHz |
| Breakdown Voltage | 800 V |
| Standby Power | <50 mW at 265 VAC |
| Operating Temperature | -25Β°C to +150Β°C |
| Package | SO-8 (with exposed pad) |
| Mounting Type | Surface Mount |
| Control Mode | Current-mode |
| Burst Mode | Yes |
| Protection Features | Overcurrent, Overvoltage, Thermal Shutdown |
| RoHS Status | Compliant |
| MSL Level | 3 |
| Thermal Resistance | 60 Β°C/W |
VIPER26LDTR Pin Configuration
| Pin 1 | VDD β Power supply for the controller |
| Pin 2 | GND β Ground |
| Pin 3 | FB β Feedback input |
| Pin 4 | DRAIN β Drain of the power MOSFET |
| Pin 5 | DRAIN β Drain of the power MOSFET |
| Pin 6 | DRAIN β Drain of the power MOSFET |
| Pin 7 | DRAIN β Drain of the power MOSFET |
| Pin 8 | SOURCE β Source of the power MOSFET |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
VIPER26LDTR is suitable for 6 applications: Auxiliary Power Supplies, Smart Meters, Home Appliances, LED Lighting, Industrial Control Systems, IoT Devices.
Auxiliary Power Supplies
The VIPER26LDTR is ideal for auxiliary power supplies in appliances and industrial equipment. Its wide input voltage range and low standby power make it suitable for always-on applications. The integrated power switch reduces component count and simplifies design. With a typical output power of 8W, it can power control circuits, sensors, and communication interfaces. The burst mode operation ensures high efficiency at light loads, meeting energy efficiency regulations. The built-in protections enhance reliability in harsh environments.
Recommended
Smart Meters
Smart meters require a reliable, efficient power supply that can operate from the mains. The VIPER26LDTR provides a compact solution with its integrated 800V MOSFET and controller. The low standby power (<50mW) helps meet energy efficiency standards. The wide input range ensures operation across different regions. The device's protection features safeguard against overcurrent and overvoltage conditions. The SO-8 package allows for a small form factor, ideal for space-constrained meter designs.
Recommended
Home Appliances
In home appliances like washing machines and refrigerators, the VIPER26LDTR provides a cost-effective power supply for control boards. Its high-voltage startup circuit eliminates the need for external startup resistors, reducing component count. The burst mode operation reduces standby power, complying with energy regulations. The device's thermal shutdown protects against overheating. The SO-8 package is suitable for compact PCB layouts. The wide input range accommodates voltage fluctuations in residential settings.
Recommended
LED Lighting
The VIPER26LDTR can be used in LED drivers for residential and commercial lighting. Its constant current capability, when configured with appropriate feedback, ensures stable LED current. The high efficiency and low standby power are beneficial for energy-saving lighting. The device's protection features prevent damage from overcurrent and overvoltage. The compact SO-8 package allows for slim LED driver designs. The wide input range supports universal mains operation.
Recommended
Industrial Control Systems
Industrial control systems require robust power supplies that can handle wide input variations and provide reliable operation. The VIPER26LDTR's 800V MOSFET ensures high voltage capability, and its protection features enhance system reliability. The device can operate in harsh environments with its wide temperature range. The integrated controller simplifies design and reduces time-to-market. The low standby power is beneficial for systems that are always on. The SO-8 package is suitable for industrial PCBs.
Recommended
IoT Devices
IoT devices often require a compact, efficient power supply that can be powered from the mains. The VIPER26LDTR provides a low-cost solution with its integrated power switch. The low standby power is crucial for devices that are always connected. The wide input range allows for global deployment. The device's small package size is ideal for space-constrained IoT modules. The burst mode operation ensures high efficiency at light loads, extending device lifespan.
Recommended
Recommended Products Summary
Engineering reference data for VIPER26LDTR β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | VIPER26HD | VIPER26LN | VIPER26HN | VIPER27LD | VIPER28LD |
|---|---|---|---|---|---|---|
| Package | SO-8 | DIP-8 | SO-8 | DIP-8 | SO-8 | SO-8 |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Breakdown Voltage | 800 V | 800 V | 800 V | 800 V | 800 V | 800 V |
| Peak Current Limit | 1.5 A | 1.5 A | 1.5 A | 1.5 A | 2 A | 2.5 A |
| Switching Frequency | 60 kHz | 60 kHz | 60 kHz | 60 kHz | 60 kHz | 60 kHz |
| Standby Power | <50 mW | <50 mW | <50 mW | <50 mW | <50 mW | <50 mW |
| Operating Temperature | -25Β°C to +150Β°C | -25Β°C to +150Β°C | -25Β°C to +150Β°C | -25Β°C to +150Β°C | -25Β°C to +150Β°C | -25Β°C to +150Β°C |
| RoHS | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant |
Key Differentiators
- Integrated 800V MOSFET (vs TNY286PG)
- Low standby power (vs LNK306PN)
- SO-8 package with exposed pad (vs VIPER26HD)
Design Notes
The VIPER26LDTR in SO-8 package has a thermal resistance of 60Β°C/W. For 8W output, the power dissipation is typically 1-2W, resulting in a temperature rise of 60-120Β°C. Ensure adequate copper area on the PCB for heat dissipation, and consider a thermal pad connection to the ground plane.
Place the input bulk capacitor and output filter capacitor close to the IC to minimize loop area and reduce EMI. Use a star-ground topology to separate power ground from signal ground. The high-voltage DRAIN pins should have adequate creepage distance to low-voltage pins.
Do not exceed the maximum junction temperature of 150Β°C. Ensure the transformer is designed for the target output power and has proper isolation. The feedback loop must be compensated to avoid instability. Use a snubber circuit across the primary winding to suppress voltage spikes.
Compliance Information
RoHS compliant per STMicroelectronics product page. Not AEC-Q100 qualified.
