Linear Technology LTC3547EDDB-1 Dual Channel, 800mA Synchronous Step-Down Regulator

The LTC3547EDDB-1 is a high-performance, dual-channel, synchronous step-down regulator from Linear Technology, designed to deliver efficient power management for modern electronic devices. This compact and versatile component is ideal for applications requiring low voltage, high current outputs from a single input power supply. The LTC3547EDDB-1 is housed in a small 10-lead DFN (3mm x 3mm) package, which makes it perfect for space-constrained applications.

Each channel of the LTC3547EDDB-1 is capable of delivering up to 800mA of continuous output current. The regulator operates over a wide input voltage range of 2.5V to 5.5V, making it suitable for single Li-Ion, multiple Alkaline/NiMH cells, or other standard power sources. The output voltage is adjustable from 0.6V to VIN, ensuring compatibility with a variety of low voltage applications, such as handheld devices, portable media players, and other battery-powered gadgets.

The LTC3547EDDB-1 features a high efficiency, up to 95%, which is achieved through its constant frequency, current mode operation, and internal synchronous rectification. The low RDS(ON) internal switches contribute to the high efficiency, especially at lower output voltages. Moreover, the device has a selectable Burst Mode® operation that provides high efficiency at low output currents, making it an excellent choice for battery-powered applications with standby or sleep modes.

To protect the device and the load, the LTC3547EDDB-1 incorporates a range of safety features including over-temperature protection, current limiting, and short-circuit protection. The regulator also offers low dropout operation, ensuring continuous output regulation even when the input to output differential is small.

For design flexibility, the LTC3547EDDB-1 provides independent enable pins for each channel, allowing for user-controlled sequencing or shut down of individual outputs as required by the system. With its advanced features and compact footprint, the LTC3547EDDB-1 is an excellent choice for designers looking to optimize power efficiency and extend battery life in their portable applications.

Overall, the LTC3547EDDB-1 from Linear Technology is a robust and reliable solution for dual-channel power regulation, combining performance, versatility, and protection to meet the demands of modern electronic devices.