Maxim Integrated's MAX772ESA+ Charge Pump Voltage Converter

The MAX772ESA+ is a high-efficiency, low-noise, switched-capacitor voltage converter from Maxim Integrated that delivers a versatile power solution for a wide range of applications. This compact and reliable integrated circuit is designed to provide a positive voltage from a negative input voltage, making it an ideal choice for systems that require an inverted power supply.

Key Features:

• Wide Input Voltage Range: The device operates with an input voltage range from -2.0V to -5.5V, providing flexibility for various battery configurations and power sources.
• Adjustable Output Voltage: Users can set the output voltage from -2.0V to -V_IN by using two external resistors, allowing for custom voltage settings tailored to specific application needs.
• High Efficiency: With its switched-capacitor technology, the MAX772ESA+ achieves up to 95% power efficiency, minimizing power loss and heat generation.
• Low Noise Operation: The device includes a low ripple and low noise design, ensuring that sensitive analog circuits and RF systems are not adversely affected by power supply noise.
• Simple Control Logic: The converter features a straightforward logic-controlled shutdown mode, which reduces the quiescent current to 1µA (max), thereby conserving power when the device is not in use.
• Protection Features: The MAX772ESA+ incorporates thermal shutdown and current limit protection, enhancing the reliability and longevity of the device under adverse conditions.

Applications:

The MAX772ESA+ is suitable for a variety of applications that require an efficient and reliable inverted power supply. It is widely used in:

• Portable Battery-Powered Equipment
• Data Acquisition Systems
• Operational Amplifier Power Supplies
• Interface Power Supplies
• Medical Instruments
• Telecommunications Infrastructure

With its small size, the MAX772ESA+ comes in an 8-pin SOIC package, making it easy to integrate into space-constrained designs. Its robust feature set and versatility make it a go-to choice for engineers looking to create stable and efficient power supply systems in their electronic designs.