LTC1265是1.2A, High Efficiency Step-Down DC/DC Converter

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LTC1265 - LTC1265是1.2A, High Efficiency Step-Down DC/DC Converter

LTC1265是Linear公司的一款内部开关电源降压产品，LTC1265是1.2A, High Efficiency Step-Down DC/DC Converter，本站介绍了LTC1265的封装应用图解、特点和优点、功能等，并给出了与LTC1265相关的凌力尔特元器件型号供参考。

LTC1265 - 1.2A, High Efficiency Step-Down DC/DC Converter

LTC1265 - 1.2A, High Efficiency Step-Down DC/DC Converter - Linear Technology（凌力尔特）

功能描述

The LTC?1265 is a monolithic step-down current mode DC/DC converter featuring Burst Mode ? operation at low output current. The LTC1265 incorporates a 0.3 Ohms switch (VIN =10V) allowing up to 1.2A of output current.Under no load condition, the converter draws only 160μA. In shutdown it typically draws a mere 5μA making this converter ideal for current sensitive applications. In dropout the internal P-channel MOSFET switch is turned on continuously maximizing the life of the battery source. The LTC1265 incorporates automatic power saving Burst Mode operation to reduce gate charge losses when the load currents drop below the level required for continuous operation.The inductor current is user-programmable via an external current sense resistor. Operation up to 700kHz permits the use of small surface mount inductors and capacitors.

特点

High Efficiency: Up to 95%

Current Mode Operation for Excellent Line and Load Transient Response

Internal 0.3 Ohms Power Switch (VIN = 10V)

Short-Circuit Protection

Low Dropout Operation: 100% Duty Cycle

Low-Battery Detector

Low 160µA Standby Current at Light Loads

Active-High Micropower Shutdown: IQ < 15µA

Peak Inductor Current Independent of Inductor Value

Available in 14-pin SO Package

应用

5V to 3.3V Conversion

Distributed Power Systems

Step-Down Converters

Inverting Converters

Memory Backup Supply

Portable Instruments

Battery-Powered Equipment

Cellular Telephones

以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格（美元）

器件型号	封装	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量)
LTC1265CS	SO-14	C	$4.60	$3.75
LTC1265CS-3.3	SO-14	C	$4.60	$3.75
LTC1265CS-3.3#PBF	SO-14	C	$4.60	$3.75
LTC1265CS-3.3#TR	SO-14	C		$3.81
LTC1265CS-3.3#TRPBF	SO-14	C		$3.81
LTC1265CS-5	SO-14	C	$4.60	$3.75
LTC1265CS-5#PBF	SO-14	C	$4.60	$3.75
LTC1265CS-5#TR	SO-14	C		$3.81
LTC1265CS-5#TRPBF	SO-14	C		$3.81
LTC1265CS#PBF	SO-14	C	$4.60	$3.75
LTC1265CS#TR	SO-14	C		$3.81
LTC1265CS#TRPBF	SO-14	C		$3.81
LTC1265IS	SO-14	I	$5.15	$4.25
LTC1265IS#PBF	SO-14	I	$5.15	$4.25
LTC1265IS#TR	SO-14	I		$4.31
LTC1265IS#TRPBF	SO-14	I		$4.31