ST662A - High-Efficiency Charge Pump DC-DC Converter

The ST662A is a compact and efficient DC-DC converter designed and manufactured by STMicroelectronics, a global leader in semiconductor solutions. This charge pump voltage converter is capable of stepping up a low voltage input to a higher voltage output, making it an ideal choice for battery-powered applications where extending run-time is crucial.

With its ability to convert a 2.0V to 5.5V input voltage to a regulated 12V output voltage, the ST662A is perfectly suited for small, portable devices such as personal digital assistants (PDAs), digital cameras, and other handheld devices. Its high efficiency and low quiescent current draw ensure minimal battery drain, thus prolonging the life of the device it powers.

Key features of the ST662A include:

• 2.0V to 5.5V Input Voltage Range
• Regulated 12V ±5% Output Voltage
• Low Quiescent Current: 120 µA Typ.
• High Efficiency: Up to 90%
• Low Noise Operation with Ceramic Capacitors
• Minimum External Components Required
• Thermal Shutdown Protection
• Available in 8-Pin Mini DIP or SO Packages

The device's simple design allows for a minimal external component count, typically only two capacitors, which reduces the overall bill of materials and simplifies the design process. Additionally, the ST662A supports low noise operation with ceramic capacitors, which is critical for noise-sensitive applications.

STMicroelectronics has also incorporated thermal shutdown protection into the ST662A, ensuring that the device remains safe under abnormal operating conditions. This feature helps prevent damage to the converter and the application it is used in.

Whether you're designing a new handheld gadget or looking to improve the efficiency of an existing product, the ST662A provides a reliable and cost-effective solution for your power conversion needs. Its small form factor, combined with high efficiency, makes it an excellent choice for designers looking to maximize performance in space-constrained applications.