Datasheet > LM3206

LM3206

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		转换器便携式
页数	文件大小	规格书
16页	1100K
描述
650mA Miniature, Step-Down DC-DC Converter for Portable Applications

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LM3206 数据手册

October 2006

LM3206

650mA Miniature, Step-Down DC-DC Converter for

Portable Applications

General Description

Features

The LM3206 is a DC-DC converter optimized for powering

portable applications from a single Lithium-Ion cell, however

they may be used in many other applications. It steps down

an input voltage from 3.25V to 5.5V to a fixed output voltage

of 3.09V.

2 MHz (typ.) PWM Switching Frequency

■

Operates from a single Li-Ion cell

Fixed Output Voltage (3.09V)

650mA Maximum load capability

High Efficiency (96% Typ at 3.6V_IN, 3.09V_OUTat 400mA)

from internal synchronous rectification

8-pin micro SMD Package

Current Overload Protection

Thermal Overload Protection

Soft Start function

■

The LM3206 offers superior performance for mobile phones

and other applications requiring low dropout voltage. Fixed-

frequency PWM operation minimizes RF interference. The

Shutdown function turns the device off and reduces battery

consumption to 0.01 µA (typ.).

■

The LM3206 is available in an 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 ca-

pacitors are required.

Low Dropout Voltage (140 mΩ Typ PFET)

Applications

Cellular Phones

■

Hand-Held Radios

RF PC Cards

Battery Powered RF Devices

RFIC Chipsets

■

Typical Application

20198901

FIGURE 1. LM3206 Typical Application

201989

www.national.com

12 3 4 5 6 7...16

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