ET3406中文资料DC-DC数据手册ETEK规格书

描述 Description

The ET3406 is a high efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. The device is available in an adjustable version and fixed output voltages of 1.5V and 1.8V. Supply current drops to ≤1μA in shutdown. The 2.5V to 5.5V input voltage range makes the ET3406 ideally suited for single Li-Ion battery-powered applications. 100% duty cycle provides low dropout operation, extending battery life in portable systems.
Switching frequency is internally set at 1.5MHz, allowing the use of small surface mount inductors and capacitors. The internal synchronous switch increases efficiency and eliminates the need for an external Schottky diode. Low output voltages are easily supported with the 0.6V feedback reference voltage.

特性 Features

• High Efficiency: Up to 96%
• 600mA Output Current
• 2.5V to 5.5V Input Voltage Range
• 1.5MHz Constant Frequency Operation
• No Schottky Diode Required
• Low Dropout Operation: 100% Duty Cycle
• Shutdown Mode Draws ≤ 1μA Supply Current
• Current Mode Operation for Excellent Line and Load Transient Response
• Over temperature Protected
• Package

应用 Application

• Cellular Telephones
• Personal Information Appliances
• Wireless and DSL Modems
• Digital Still Cameras
• MP3 Players
• Portable Instruments