LTC3547EDDB - Dual Channel, 800mA Synchronous Step-Down Regulator

The LTC3547EDDB is a high-performance, dual channel, synchronous step-down regulator from Linear Technology, designed to deliver efficient power conversion for portable devices. This compact and robust regulator is ideal for applications requiring dual power rails with significant current capabilities in a space-constrained environment.

Key Features:

• Wide Input Voltage Range: The device operates from an input voltage range of 2.5V to 5.5V, making it suitable for single-cell Li-Ion, multi-cell alkaline, or NiMH applications, as well as fixed 3.3V or 5V power sources.
• Dual 800mA Outputs: Each of the two channels can deliver up to 800mA of continuous output current, which can be beneficial for systems that require multiple supply voltages.
• High Efficiency: With its synchronous rectification design, the LTC3547EDDB achieves up to 96% efficiency, thereby minimizing heat generation and extending battery life in portable applications.
• Adjustable Output Voltage: The output voltage is adjustable down to 0.6V, providing flexibility to power a wide range of low voltage digital ICs.
• No Schottky Diode Required: The internal synchronous rectification eliminates the need for an external Schottky diode, reducing both cost and board space.
• Stable with Ceramic Capacitors: The LTC3547EDDB is stable with ceramic output capacitors, which are smaller, more reliable, and have lower ESR compared to electrolytic capacitors.
• Low Dropout Operation: The 100% duty cycle capability provides low dropout operation, which is critical during deep discharge periods of the battery.

Applications:

The LTC3547EDDB is suitable for a variety of applications including:

• Portable Instruments
• Medical Devices
• Wireless Modems
• Handheld Devices
• GPS Receivers

Packaging:

The device is offered in a low profile (0.75mm) 8-lead (3mm × 3mm) DFN package, which is designed for space-saving applications where height is a critical parameter.

Overall, the LTC3547EDDB by Linear Technology is a versatile and powerful solution for modern electronic devices that require efficient power management in a compact form factor.