STMicroelectronics

ST662ACD

ST662ACD Description

The ST662ACD from STMicroelectronics is a fixed-output charge pump DC-DC switching voltage regulator, designed to deliver a stable 12V output with a maximum current of 30mA. Operating within an input voltage range of 4.5V to 5.5V, this IC is optimized for low-power applications requiring efficient voltage step-up conversion. Its 400kHz switching frequency ensures compact design integration while minimizing external component count. The device features a positive output configuration, making it suitable for a variety of analog and digital circuits. Packaged in an 8-pin SOIC and compliant with ROHS3 and REACH standards, the ST662ACD is ideal for space-constrained designs.

ST662ACD Features

• Fixed 12V Output: Ensures stable voltage regulation without adjustable components.
• Wide Input Range (4.5V–5.5V): Compatible with standard 5V power supplies.
• 30mA Output Current: Suitable for low-power peripherals and sensors.
• Charge Pump Topology: Eliminates the need for inductors, reducing board space and cost.
• 400kHz Switching Frequency: Enables compact filtering and low noise operation.
• Surface-Mount (SOIC-8): Facilitates automated assembly and high-density PCB layouts.
• RoHS3 & REACH Compliant: Meets environmental and safety regulations.
• Non-Synchronous Rectification: Simplifies design while maintaining efficiency.

ST662ACD Applications

The ST662ACD is particularly well-suited for:

• LCD Bias Supplies: Generating stable voltages for display backlighting.
• Portable Electronics: Powering low-current analog circuits in handheld devices.
• Sensor Interfaces: Providing clean, regulated voltage for precision sensors.
• Industrial Control Systems: Supporting low-power logic and signal conditioning circuits.
• Automotive Accessories: Auxiliary power for infotainment or dashboard components.

Conclusion of ST662ACD

The ST662ACD offers a reliable, compact, and cost-effective solution for low-power voltage step-up applications. Its fixed 12V output, charge pump architecture, and compliance with environmental standards make it a preferred choice for designers seeking simplicity and efficiency. While now obsolete, its performance characteristics remain valuable for legacy systems or specific niche applications requiring minimal external components and stable voltage conversion.