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LM3208TLX

更新时间： 2024-11-20 04:44:31

品牌	Logo	应用领域
美国国家半导体 - NSC		转换器放大器射频功率放大器
页数	文件大小	规格书
17页	1651K
描述
650mA Miniature, Adjustable, Step-Down DC-DC Converter for RF Power Amplifiers

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LM3208TLX 数据手册

April 2006

LM3208

650mA Miniature, Adjustable, Step-Down DC-DC

Converter for RF Power Amplifiers

General Description

Features

n 2 MHz (typ.) PWM Switching Frequency

The LM3208 is a DC-DC converter optimized for powering

RF power amplifiers (PAs) from a single Lithium-Ion cell.

However, it may be used in many other applications. It steps

down an input voltage in the range from 2.7V to 5.5V to an

adjustable output voltage of 0.8V to 3.6V. Output voltage is

set by using a V_CONanalog input to control power levels and

efficiency of the RF PA.

n Operates from a single Li-Ion cell (2.7V to 5.5V)

n Adjustable Output Voltage (0.8V to 3.6V)

n Fast Output Voltage Transient (0.8V to 3.4V in 25µs

typ.)

n 650mA Maximum load capability

n High Efficiency (95% typ. at 3.9V_IN, 3.4V_OUTat 400mA)

n 8-pin micro SMD Package

The LM3208 offers superior performance for mobile phones

and similar RF PA applications. Fixed-frequency PWM op-

eration minimizes RF interference. A shutdown function turns

the device off and reduces battery consumption to 0.01 µA

(typ.).

n Current Overload Protection

n Thermal Overload Protection

Applications

n Cellular Phones

n Hand-Held Radios

n RF PC Cards

The LM3208 is available in an 8-pin lead-free micro SMD

package. A high switching frequency (2 MHz typ.) allows use

of tiny surface-mount components. Only three small external

surface-mount components, an inductor and two ceramic

capacitors, are required.

n Battery Powered RF Devices

Typical Application

20166301

FIGURE 1. LM3208 Typical Application

DS201663

www.national.com

12 3 4 5 6 7...17

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LM3208TLX 替代型号

型号	品牌	替代类型	描述	数据表
LM3208TLX/NOPB	NSC	功能相似	IC 1.2 A SWITCHING REGULATOR, 2200 kHz SWITCHING FREQ-MAX, PBGA8, ROHS COMPLIANT, THIN MIC

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型号	品牌	获取价格	描述	数据表
LM3208TLX/NOPB	NSC	获取价格	IC 1.2 A SWITCHING REGULATOR, 2200 kHz SWITCHING FREQ-MAX, PBGA8, ROHS COMPLIANT, THIN MIC
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LM3209-G3	TI	获取价格	LM3209-G3 PRODUCT BRIEF Seamless-Transition Buck-Boost Converter for Battery- Powered 3G/4
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LM3209TLX-G3-NOPB	TI	获取价格	Seamless-Transition Buck-Boost Converter for Battery-Powered 3G/4G RF Power Amplifiers
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