STMicroelectronics

STCH02TR

STCH02TR Description

The STCH02TR from STMicroelectronics is an obsolete offline switch IC designed for flyback topology applications, packaged in an 8-pin SO surface-mount configuration with Tape & Reel (TR) delivery. This AC/DC converter operates with an input supply range of 11.5V to 23V and features a 260kHz switching frequency, making it suitable for compact, high-efficiency power supply designs. The device includes over-voltage fault protection and supports isolated outputs, ensuring reliable performance in demanding environments. With a 13V startup voltage and 50% duty cycle, it offers stable operation in low-power offline converters.

STCH02TR Features

• Flyback Topology: Optimized for isolated power conversion with high efficiency.
• Wide Input Range (11.5V–23V): Supports flexible power supply designs.
• Over-Voltage Protection: Enhances system reliability by safeguarding against voltage spikes.
• 260kHz Switching Frequency: Enables compact magnetics and reduced passive component size.
• RoHS3 & REACH Compliant: Meets environmental and regulatory standards.
• Surface-Mount (SO-8): Ideal for space-constrained PCB layouts.
• Isolated Output: Ensures safety and noise immunity in sensitive applications.

STCH02TR Applications

The STCH02TR is ideal for:

• Low-Power Adapters: USB chargers, LED drivers, and auxiliary power supplies.
• Industrial Control Systems: Isolated power for sensors, PLCs, and communication modules.
• Consumer Electronics: Standby power circuits in TVs, set-top boxes, and appliances.
• Telecom & Networking: Power management for routers, modems, and PoE devices.

Conclusion of STCH02TR

While obsolete, the STCH02TR remains a robust choice for flyback-based offline power conversion, offering a balance of efficiency, protection, and compact design. Its wide input range, over-voltage protection, and high switching frequency make it suitable for legacy designs in industrial, consumer, and telecom applications. Engineers seeking alternatives should consider newer STMicroelectronics offerings with enhanced features, but the STCH02TR exemplifies reliable performance in cost-sensitive, isolated power solutions.