STMicroelectronics

STCH02  

AC DC Converters, Offline Switches

STCH02 Description

The STCH02 is an offline switch flyback IC designed by STMicroelectronics, a leading manufacturer in the power management sector. This device is housed in an 8SO package and is ideal for a variety of applications requiring efficient power conversion and management. The STCH02 operates with a switching frequency of 260kHz, ensuring high efficiency and minimal electromagnetic interference (EMI). It features an isolated output, which is crucial for applications where galvanic isolation is necessary to protect sensitive circuits from voltage spikes and noise.

The STCH02 is designed to operate within a wide supply voltage range of 11.5V to 23V, making it versatile for various power supply configurations. It includes over-voltage fault protection, safeguarding connected circuits from potential damage due to voltage surges. The device also has a start-up voltage of 13V, ensuring reliable operation even under low-voltage conditions. With a duty cycle of 50%, the STCH02 maintains optimal performance across its operational range.

STCH02 Features

• Topology: Flyback, which is known for its simplicity and efficiency in power conversion.
• Mounting Type: Surface mount, allowing for compact and reliable integration into modern PCB designs.
• Internal Switches: The STCH02 does not feature internal switches, which can be advantageous for applications requiring external control and customization.
• Fault Protection: Over-voltage protection ensures the safety and longevity of connected circuits.
• Switching Frequency: 260kHz, which balances efficiency and EMI considerations.
• REACH Status: REACH Unaffected, indicating compliance with stringent chemical safety regulations.
• Voltage - Start Up: 13V, ensuring reliable operation under varying input conditions.
• Moisture Sensitivity Level (MSL): Level 3 (168 Hours), suitable for standard manufacturing processes and storage conditions.
• Package: Tube, which facilitates easy handling and integration into production lines.
• Output Isolation: Isolated, providing essential protection for sensitive downstream circuits.
• Voltage - Supply (Vcc/Vdd): 11.5V to 23V, offering flexibility in power supply design.
• RoHS Status: ROHS3 Compliant, ensuring environmental sustainability and regulatory adherence.

STCH02 Applications

The STCH02 is well-suited for a range of applications where isolated power conversion and efficient energy management are critical. Its flyback topology and isolated output make it ideal for:

• Power Supplies: In consumer electronics, industrial equipment, and medical devices where isolated power conversion is necessary.
• Adapters and Chargers: For portable devices, ensuring reliable and efficient power delivery.
• Telecommunications: In base stations and networking equipment where isolated power supplies are essential for signal integrity.
• Automotive Electronics: For in-vehicle infotainment systems and other electronic components requiring isolated power sources.

Conclusion of STCH02

The STCH02 from STMicroelectronics is a robust and versatile offline switch flyback IC designed for applications requiring efficient power conversion and isolated outputs. Its wide supply voltage range, over-voltage protection, and 260kHz switching frequency make it a reliable choice for various power management needs. Despite being marked as obsolete, the STCH02 remains a valuable component for legacy systems and specific applications where its unique features and performance benefits are still highly relevant.

STCH02 Documents

Download datasheets and manufacturer documentation for STCH02

Datasheets :

STCH02      

Reference Design Library :

STEVAL-ISA193V1: 5V @ 3A, 90 ~ 264VAC in, Isolated      

PCN Obsolescence/ EOL :

STCH02 EOL 23/Oct/2019      

HTML Datasheet :

STCH02