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參數(shù)資料
| 型號： | LM3203TLX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Step-Down DC-DC Converter with Bypass Mode for CDMA / WCDMA RF Power Amplifiers |
| 中文描述： | SWITCHING REGULATOR, 2200 kHz SWITCHING FREQ-MAX, BGA10 |
| 封裝： | LEAD FREE, THIN MICRO BUMP, 10 PIN |
| 文件頁數(shù)： | 1/15頁 |
| 文件大?。?/td> | 1360K |
| 代理商： | LM3203TLX |
LM3203
Step-Down DC-DC Converter with Bypass Mode for
CDMA / WCDMA RF Power Amplifiers
General Description
The LM3203 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 of 2.7V to 5.5V to an adjustable
output voltage of 0.8V to 3.6V. The output voltage is set
using a V
analog input and external resistor dividers for
optimizing efficiency of the RF PA at various power levels.
The LM3203 offers 3 modes for mobile phones and similar
RF PA applications. Fixed-frequency PWM mode minimizes
RF interference. Bypass mode turns on an internal bypass
switch to power the PA directly from the battery. Shutdown
mode turns the device off and reduces battery consumption
to 0.1μA (typ.).
The LM3203 is available in a 10-pin lead free micro SMD
package. A high switching frequency (2MHz) allows use of
tiny surface-mount components.
Features
n
2MHz (typ.) PWM Switching Frequency
n
Operates from a single Li-Ion cell (2.7V to 5.5V)
n
Adjustable Output Voltage (0.8V to 3.6V)
n
500mA Maximum load capability (PWM and Bypass
mode)
n
PWM / Forced Bypass Mode
n
Low R
DSON
Bypass FET: 85m
(typ.)
n
High Efficiency (96% typ. at 3.6V
IN
, 3.2V
OUT
at 150mA)
n
Fast Turn-on time when Enabled (50μs typ.), 3GPP
Compliant
n
10-pin micro SMD Package
n
Current Overload Protection
n
Thermal Overload Protection
Applications
n
Cellular Phones
n
Hand-Held Radios
n
RF PC Cards
n
Battery Powered RF Devices
Typical Application
20141601
July 2005
L
A
2005 National Semiconductor Corporation
DS201416
www.national.com
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM3203TLX/J7002328 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述: |
| LM3203TLX/NOPB | 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| LM3204 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Miniature, Adjustable, Step-Down DC-DC Converter with Bypass Mode for RF Power Amplifiers |
| LM3204TL | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述:CONVERTER BUCK 0.5A ADJ POWERWISE |
| LM3204TL/NOPB | 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
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