LTC3408 - LTC3408是1.5MHz, 600mA Synchronous Step-Down Regulator with Bypass Transistor

LTC3408是LINEAR凌力尔特公司的一款内部开关电源降压产品，LTC3408是LTC3408是1.5MHz, 600mA Synchronous Step-Down Regulator with Bypass Transistor，本站介绍了LTC3408的封装应用图解、特点和优点、功能等，并给出了与LTC3408相关的LINEAR元器件型号供参考。

LTC3408 - LTC3408是1.5MHz, 600mA Synchronous Step-Down Regulator with Bypass Transistor - 内部开关电源降压 - 电源管理 - 凌力尔特

LTC3408 - 1.5MHz, 600mA Synchronous Step-Down Regulator with Bypass Transistor

LTC3408 - 1.5MHz, 600mA Synchronous Step-Down Regulator with Bypass Transistor - Linear Technology（凌力尔特）

功能描述

The LTC3408 is a high efficiency monolithic synchronous buck regulator optimized for WCDMA power amplifier applications. The output voltage can be dynamically programmed from 0.3V to 3.5V. At VOUT > 3.6V an internal 0.08Ω bypass P-channel MOSFET connects VOUT directly to VIN, eliminating power loss through the inductor.

The input voltage range is 2.5V to 5V making the LTC3408 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.

The LTC3408 is available in a low profile (0.75mm) 8-lead 3mm × 3mm DFN package.

U.S. Patent Numbers: 5481178, 6580258, 6304066, 6127815, 6498466, 6611131

特点

Dynamically Adjustable Output from 0.3V to 3.5V

600mA Output Current

Internal 0.08 Ohm P-Channel MOSFET Bypass Transistor

High Efficiency: Up to 96%

1.5MHz Constant Frequency Operation

No Schottky Diode Required

Low Dropout Operation: 100% Duty Cycle

2.5V to 5V Input Voltage Range

Shutdown Mode Draws <1µA Supply Current