LM3205
- 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
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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.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | LM3205 650mA Mini, Adj, Step-Down DC-DC Cnvtr for RF Pwr Amps datasheet (Rev. E) | 2013年 4月 2日 | |
| EVM User's guide | AN-1413 LM3205 Evaluation Board (Rev. A) | 2013年 4月 30日 | ||
| Application note | Optimizing RF Power Amplifier System Efficiency Using DC-DC Converters | 2007年 3月 21日 |
設計與開發
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| 封裝 | 引腳 | 下載 |
|---|---|---|
| WSON (DSC) | 10 | 檢視選項 |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 資格摘要
- 進行中可靠性監測
- 晶圓廠位置
- 組裝地點