LM3269

更新时间： 2024-11-12 12:09:43

品牌	Logo	应用领域
德州仪器 - TI		转换器放大器射频功率放大器升压转换器
页数	文件大小	规格书
5页	136K
描述
Seamless-Transition Buck-Boost Converter for 3G and 4G RF Power Amplifiers

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LM3269 数据手册

LM3269

PRODUCT BRIEF

Seamless-Transition Buck-Boost Converter for 3G and 4G RF Power

Amplifiers

General Description

Features

The LM3269 is a buck-boost DC/DC converter designed to

generate output voltages above or below a given input voltage

and is particularly suitable for single cell Li-ion batteries for

portable applications.

Operates from a Single Li-Ion Cell: 2.7V to 5.5V

●

Adjustable Output Voltage: 0.6V to 4.2V

PFM Operation

750 mA Maximum Load Capability for P_VIN≥ 3.0V,

The LM3269 operates at a 2.4 MHz typical switching frequen-

cy in full synchronous operation and provides seamless tran-

sitions between buck and boost operating regimes. The

LM3269 operates in energy saving Pulse Frequency Modu-

lation (PFM) mode for increased efficiencies and current sav-

ings during low-power RF transmission modes.

V_OUT= 3.8V

2.4 MHz (typ.) Switching Frequency

●

Seamless Buck-Boost Mode Transition

Fast Output Voltage Transition: 1.4V to 3.0V in 10 µs

High-Efficiency: 95% typ. at P_VIN= 3.7V, V_OUT= 3.3V,

at 300 mA

The power converter topology needs only one inductor and

two capacitors. A unique internal power-switching topology

enables high overall efficiency.

Input Overcurrent Limit

●

Internal Compensation

The LM3269 is internally compensated for buck and boost

modes of operation, thus providing an optimal transient re-

sponse.

12-bump micro SMD Package

Solution Size = 18.8 mm²

The LM3269 is available in a 12-bump lead-free micro SMD

package of size 2.0 mm x 2.5 mm x 0.6 mm.

Applications

Power Supply for 3G/4G Power Amplifiers

Notice: This document is not a datasheet. For more in-

formation regarding this product or to order samples

please contact your local Texas Instruments sales office.

●

Cellular Phones

Portable Hard Disk Drives

PDAs

●

Typical Application Circuit

30173201

PRODUCTION DATA information is current as of

publication date. Products conform to specifications per

the terms of the Texas Instruments standard warranty.

Production processing does not necessarily include

testing of all parameters.

301732 SNVS793B

12 3 4 5

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与LM3269相关器件

型号	品牌	获取价格	描述	数据表
LM3269TLE/NOPB	TI	获取价格	Seamless Transition Buck/Boost Converter for LTE and HSPA RF Power Amplifiers 12-DSBGA -30
LM3269TLX/NOPB	TI	获取价格	用于 LTE 和 HSPA 射频功率放大器的无缝转换降压/升压转换器 \| YZR \| 12
LM326H	NSC	获取价格	VOLTAGE REGULATORS
LM326N	NSC	获取价格	VOLTAGE REGULATORS
LM326N/B+	ETC	获取价格	Negative & Positive Fixed Voltage Regulator
LM326S	TI	获取价格	IC,VOLT REGULATOR,FIXED,+-12V,BIPOLAR,DIP,14PIN,PLASTIC
LM3279	TI	获取价格	LM3279 Buck-Boost Converter with MIPI RFFE Interfacefor 3G and 4G RF Power Amplifiers
LM3279TLE/NOPB	TI	获取价格	具有用于 3G 和 4G 射频功率放大器的 MIPI® RFFE 接口的降压-升压转换器
LM3279TLX/NOPB	TI	获取价格	具有用于 3G 和 4G 射频功率放大器的 MIPI® RFFE 接口的降压-升压转换器
LM3280	NSC	获取价格	Adjustable Step-Down DC-DC Converter and 3 LDOs for RF Power Management

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