LM3205数据手册集成电路（IC）的稳压器-DC-DC开关稳压器规格书PDF

描述 Description

The LM3205 is a DC-DC converter optimized for powering RF power amplifiers (PAs) from a single Lithium-Ion cell, however they may be used in many other applications. It steps down an input voltage from 2.7V to 5.5V to a variable output voltage from 0.8V(typ.) to 3.6V(typ.). Output voltage is set using a VCON analog input for controlling power levels and efficiency of the RF PA.

The LM3205 offers superior performance for mobile phones and similar RF PA applications. Fixed-frequency PWM operation minimizes RF interference. Shutdown function turns the device off and reduces battery consumption to 0.01 µA (typ.).

The LM3205 is available in DSBGA package and WSON package. For all other package options contact your local TI sales office.

A high switching frequency (2 MHz) allows use of tiny surface-mount components. Only three small external surface-mount components, an inductor and two ceramic capacitors are required.

特性 Features

• 2 MHz (typ.) PWM Switching Frequency
• Operates from a Single Li-Ion Cell (2.7V to 5.5V)
• Variable Output Voltage (0.8V to 3.6V)
• Fast Output Voltage Transient (0.8V to 3.6V in 20µs)
• 650mA Maximum Load Capability
• High Efficiency (96% Typ at 4.2VIN, 3.4VOUT at 400mA) from Internal Synchronous Rectification
• Current Overload Protection
• Thermal Overload Protection
• Packages
•
8-Pin DSBGA (Lead Free)
• 10-Pin WSON