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參數資料
| 型號： | LM3202 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | DC/DC變換器 |
| 英文描述： | 650mA Miniature, Adjustable, Step-Down DC-DC Converter for RF Power Amplifiers |
| 中文描述： | 六百五十零毫安微型，可調，降壓型DC - DC轉換器的射頻功率放大器 |
| 文件頁數： | 1/15頁 |
| 文件大小： | 1507K |
| 代理商： | LM3202 |
LM3202
650mA Miniature, Adjustable, Step-Down DC-DC
Converter for RF Power Amplifiers
General Description
The LM3202 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 1.3V to 3.16V. Output voltage is set
using a V
analog input for controlling power levels and
efficiency of the RF PA.
The LM3202 offers superior performance for mobile phones
and similar RF PA applications. Fixed-frequency PWM op-
eration minimizes RF interference. Shutdown function turns
the device off and reduces battery consumption to 0.01 μA
(typ.).
The LM3202 is available in a 8-pin lead free micro SMD
package. 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.
Features
n
2 MHz (typ.) PWM Switching Frequency
n
Operates from a single Li-Ion cell (2.7V to 5.5V)
n
Variable Output Voltage (1.3V to 3.16V)
n
Fast Output Voltage Transient (1.3V to 3.16V in 20μs)
n
650mA Maximum load capability
n
High Efficiency (96% Typ at 3.6V
, 3.16V
OUT
at 400mA)
from internal synchronous rectification
n
8-pin micro SMD Package
n
Current Overload Protection
n
Thermal Overload Protection
n
Soft Start function
Applications
n
Cellular Phones
n
Hand-Held Radios
n
RF PC Cards
n
Battery Powered RF Devices
Typical Application
20141501
FIGURE 1. LM3202 Typical Application
October 2005
L
2005 National Semiconductor Corporation
DS201415
www.national.com
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LM3202_06 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:650mA Miniature, Adjustable, Step-Down DC-DC Converter for RF Power Amplifiers |
| LM3202TL | 制造商:Texas Instruments 功能描述:Adj. Step-Down DC-DC Converter,LM3202TL |
| LM3202TL/NOPB | 功能描述:DC/DC 開關控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| LM3202TLEV | 功能描述:電源管理IC開發工具 LM3202 EVAL BOARD RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| LM3202TLX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:650mA Miniature, Adjustable, Step-Down DC-DC Converter for RF Power Amplifiers |
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