Analog Devices Inc./Maxim Integrated Tariff Inquiry

MAX856CSA

MAX856CSA Description

The MAX856CSA is a programmable boost DC-DC switching regulator from Analog Devices Inc./Maxim Integrated, designed to deliver up to 500mA of switch current with an input voltage range of 0.8V to 6V. It features a fixed-frequency 500kHz switching topology, ensuring efficient power conversion with minimal external components. The output voltage is programmable, supporting common fixed outputs like 3.3V and 5V, making it versatile for various low-voltage applications. Packaged in an 8-pin SOIC and rated for 0°C to 70°C operation, this obsolete but robust IC remains relevant for legacy designs requiring compact, high-efficiency power solutions.

MAX856CSA Features

• Wide Input Range (0.8V–6V): Ideal for battery-powered systems, including single-cell or multi-cell configurations.
• High Switching Frequency (500kHz): Enables smaller inductor and capacitor sizes, reducing board space.
• Programmable Output: Supports adjustable or fixed voltages (e.g., 3.3V, 5V) via external resistors.
• 500mA Switch Current: Sufficient for moderate-power applications without requiring synchronous rectification.
• Surface-Mount (SOIC-8): Compact footprint suitable for space-constrained designs.
• Non-Synchronous Topology: Simplifies design while maintaining efficiency up to 85%.

MAX856CSA Applications

• Portable Electronics: Powers low-voltage processors, sensors, or displays in handheld devices.
• Battery-Powered Systems: Efficiently boosts voltage from single-cell Li-ion/NiMH batteries (e.g., 1.2V to 3.3V).
• Industrial Sensors: Provides stable voltage in remote or energy-harvesting applications.
• Legacy Designs: Replaces older boost regulators with improved efficiency and smaller form factors.

Conclusion of MAX856CSA

The MAX856CSA excels in low-input-voltage, moderate-current applications, offering a balance of programmability, efficiency, and compactness. While obsolete, its 500kHz switching frequency and wide input range make it a pragmatic choice for legacy or cost-sensitive designs. Engineers valuing minimal external components and reliable performance in portable or battery-driven systems will find this IC a compelling solution. For newer designs, consider modern alternatives with synchronous rectification for higher efficiency.