描述 Description

TMI3343B?is a wide input voltage of?4.5V to?30V, high efficiency current mode, synchronous step-down DC/DC converter capable of delivering 3A current?with adjustable switching frequency from 50kHz to?1.5MHz. TMI3343B?integrates main switch and synchronous switch with low RDS(on) to minimize the conduction loss. The device integrates 120mΩ?High-Side?and?80mΩ?Low-side Power MOS, and has advanced features include UVLO, Thermal Shutdown, Soft Start, input OVP.

特性 Features

. High Efficiency: Up to 95%@12V to 5V. Wide input voltage: 4.5V ~ 30V. Up to 3A Output Current. Low Typical 3μA Shutdown Current. Internal Fixed 1.4ms Soft-Start. 50kHz to 1.5MHz Adjustable Frequency. Stable with Low ESR Ceramic Output. Peak Current Mode with External Compensation. PFM in Light Load Condition. 0.8V Voltage Reference with ±2% Accuracy. Thermal Shutdown. Cycle-by-cycle Current Limit Protection. Over Current Protection with Hiccup Mode. ESOP8 Package(2)

應用 Application

. Smart Home Applications. Vacuum Robot. Printer. Consumer Applications: TV and Set Top Box. General 5V, 12V, 24V DC/DC Power Bus Supply