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MAX1703ESE

MAX1703ESE Description

The MAX1703ESE from Analog Devices Inc./Maxim Integrated is a high-efficiency, boost DC-DC switching regulator designed for applications requiring adjustable or fixed output voltages. This obsolete but robust IC supports an input voltage range of 0.7V to 5.5V and delivers a switch current of up to 2.2A, making it suitable for powering low-voltage systems. The output voltage is configurable, with a fixed 2.5V or 5V option or adjustable up to 5.5V, providing flexibility for diverse designs. Packaged in a 16-pin SOIC and rated for surface-mount assembly, it operates at a switching frequency of 300kHz, balancing efficiency and component size.

MAX1703ESE Features

• Wide Input Range (0.7V–5.5V): Ideal for battery-powered or low-voltage applications.
• High Output Current (2.2A Switch): Supports demanding loads with minimal dropout.
• Synchronous Rectification: Enhances efficiency by reducing power dissipation.
• Adjustable/Fixed Output (2.5V/5V or up to 5.5V): Versatile for precision voltage requirements.
• 300kHz Switching Frequency: Optimizes performance while minimizing external component size.
• MSL 1 (Unlimited): Suitable for extended storage without moisture sensitivity concerns.
• Boost Topology: Efficiently steps up voltage for applications like LED drivers or portable devices.

MAX1703ESE Applications

The MAX1703ESE excels in scenarios requiring compact, efficient power conversion:

• Battery-Powered Systems: Such as single-cell Li-ion or NiMH battery boost circuits.
• Portable Electronics: Including PDAs, handheld instruments, and USB-powered devices.
• LED Drivers: For driving high-brightness LEDs with stable voltage/current.
• Industrial Sensors: Where low-voltage inputs must be stepped up to usable levels.
• Embedded Systems: Needing regulated 3.3V/5V rails from variable sources.

Conclusion of MAX1703ESE

Though obsolete, the MAX1703ESE remains a reliable choice for low-voltage, high-current boost applications. Its synchronous rectification, wide input range, and flexible output options make it superior to non-synchronous or fixed-output alternatives. Engineers designing battery-operated or space-constrained systems may still find it valuable for legacy projects or specific efficiency-critical designs. For modern replacements, consult Analog Devices for updated equivalents with enhanced features.