LM3203 datasheet(1/15 Pages) NSC

tên linh kiện	LM3203

Giải thích chi tiết về linh kiện	Step-Down DC-DC Converter with Bypass Mode for CDMA / WCDMA RF Power Amplifiers

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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

CON 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

Ω (typ.)

n

High Efficiency (96% typ. at 3.6V

IN, 3.2VOUT 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

DS201416

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Số phần tương tự - LM3203

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Texas Instruments	LM3203	3Mb / 23P	Step-Down DC-DC Converter with Bypass Mode for CDMA / WCDMA RF Power Amplifiers
	LM3203	3Mb / 22P	Step-Down DC-DC Converter
	LM3203TL/NOPB	3Mb / 22P	Step-Down DC-DC Converter
	LM3203TLX/NOPB	3Mb / 22P	Step-Down DC-DC Converter
	LM3203	3Mb / 22P	LM3203 Step-Down DC-DC Converter with Bypass Mode for CDMA / WCDMA RF Power Amplifiers

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Mô tả tương tự - LM3203

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
National Semiconductor ...	LM2706	451Kb / 15P	Miniature, Variable, Step-Down DC-DC Converter with Bypass for RF Power Amplifiers
	LM3200	885Kb / 15P	Miniature, Adjustable, Step-Down DC-DC Converter with Bypass Mode for RF Power Amplifiers
	LM3204	878Kb / 16P	Miniature, Adjustable, Step-Down DC-DC Converter with Bypass Mode for RF Power Amplifiers
	LM3200	882Kb / 15P	Miniature, Adjustable, Step-Down DC-DC Converter with Bypass Mode for RF Power Amplifiers
Texas Instruments	LM3204	959Kb / 25P	Miniature, Adjustable, Step-Down DC-DC Converter with Bypass Mode for RF Power Amplifiers
	LM3203	3Mb / 23P	Step-Down DC-DC Converter with Bypass Mode for CDMA / WCDMA RF Power Amplifiers
	LM3200	937Kb / 24P	LM3200 Miniature, Adjustable, Step-Down DC-DC Converter with Bypass Mode for RF Power Amplifiers
	LM3203	3Mb / 22P	LM3203 Step-Down DC-DC Converter with Bypass Mode for CDMA / WCDMA RF Power Amplifiers
	LM3204	903Kb / 24P	LM3204 Miniature, Adjustable, Step-Down DC-DC Converter with Bypass Mode for RF Power Amplifiers
	LM3212	942Kb / 25P	LM3212 Step-Down DC-DC Converter with Analog Bypass Mode for RF Power Amplifiers

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