LM3205是TI公司的一款转换器（集成开关）产品，LM3205是用于射频功率放大器的 650mA 微型、可调节、降压 DC-DC 转换器，本页介绍了LM3205的产品说明、应用、特性等，并给出了与LM3205相关的TI元器件型号供参考。
LM3205 - 用于射频功率放大器的 650mA 微型、可调节、降压 DC-DC 转换器 - 转换器（集成开关） - DC/DC开关稳压器 - TI公司（Texas Instruments，德州仪器）
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.
- 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
- 10-Pin WSON
