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LTC1701B - 典型应用图例：
LTC1701B典型应用图例一
LTC1701B典型应用图例二
LTC1701B - 封装图解：
LTC1701B封装图解一
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LINEAR产品 - LTC1701B介绍

LTC1701B - LTC1701B是1MHz Step-Down DC/DC Converter in SOT-23

LTC1701B是LINEAR凌力尔特公司的一款内部开关电源降压产品，LTC1701B是LTC1701B是1MHz Step-Down DC/DC Converter in SOT-23，本站介绍了LTC1701B的封装应用图解、特点和优点、功能等，并给出了与LTC1701B相关的LINEAR元器件型号供参考。

LTC1701B - LTC1701B是1MHz Step-Down DC/DC Converter in SOT-23 - 内部开关电源降压 - 电源管理 - 凌力尔特

LTC1701B - 1MHz Step-Down DC/DC Converter in SOT-23

LTC1701 - 1MHz Step-Down DC/DC Converter in SOT-23 - Linear Technology（凌力尔特）

功能描述

The LTC1701/LTC1701B are the industry's first SOT-23 step-down, current mode, DC/DC converters. Intended for low to medium power applications, they operate from 2.5V to 5.5V input voltage range and switch at 1MHz, allowing the use of tiny, low cost capacitors and inductors 2mm or less in height. The output voltage is adjustable from 1.25V to 5V. A built-in 0.28 Ohm switch allows up to 0.5A of output current at high efficiency. OPTI-LOOP? compensation allows the transient response to be optimized over a wide range of loads and output capacitors.

The LTC1701 incorporates automatic power saving BurstMode? operation to reduce gate charge losses when the load current drops below the level required for continuous operation. The LTC1701B operates continuously to very low load currents to provide low ripple at the expense of light load efficiency. With no load, the LTC1701 draws only 135μA. In shutdown, both devices draw less than 1μA, making them ideal for current sensitive applications.

Their small size and switching frequency enables a complete DC/DC converter function to consume less than 0.3 square inches of PC board area.

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特点
  • Tiny 5-Lead SOT-23 Package
  • Uses Tiny Capacitors and Inductor
  • High Frequency Operation: 1MHz
  • High Output Current: 500mA
  • Low RDS(ON) Internal Switch: 0.28 Ohms
  • High Efficiency: Up to 94%
  • Current Mode Operation for Excellent Line and Load Transient Response
  • Short-Circuit Protected
  • Low Quiescent Current: 135μA (LTC1701)
  • Low Dropout Operation: 100% Duty Cycle
  • Ultralow Shutdown Current: IQ < 1μA
  • Peak Inductor Current Independent of Inductor Value
  • Output Voltages from 5V Down to 1.25V
    • 应用
  • PDAs/Palmtop PCs
  • Digital Cameras
  • Cellular Phones
  • Portable Media Players
  • PC Cards
  • Handheld Equipment
    • 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)
    LTC1701BES5 SOT-23 E $2.36
    LTC1701BES5#PBF SOT-23 E $2.36
    LTC1701BES5#TR SOT-23 E $2.36 $2.00
    LTC1701BES5#TRM SOT-23 E $2.36 $2.02
    LTC1701BES5#TRMPBF SOT-23 E $2.36 $2.02
    LTC1701BES5#TRPBF SOT-23 E $2.36 $2.00
    LTC1701ES5 SOT-23 E $2.36
    LTC1701ES5#PBF SOT-23 E $2.36
    LTC1701ES5#TR SOT-23 E $2.36 $2.00
    LTC1701ES5#TRM SOT-23 E $2.36 $2.02
    LTC1701ES5#TRMPBF SOT-23 E $2.36 $2.02
    LTC1701ES5#TRPBF SOT-23 E $2.36 $2.00
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  • LTC3564 - 2.25MHz, 1.25A Synchronous Step-Down Regulator
  • LT1933 - 采用 SOT-23 和 DFN 封装的 600mA、500kHz 降压型开关稳压器
  • LT3092 - 200mA、两端可编程电流源
  • LT1934 - 采用 ThinSOT 和 DFN 封装的微功率、降压型开关稳压器
  • LTC3103 - 1.8μA 静态电流、15V、300mA 同步降压型 DC/DC 转换器
  • LT3758 - 高输入电压、升压、反激式、SEPIC 和负输出控制器
  • LT8610 - 具 2.5μA 静态电流的 42V、2.5A 同步降压型稳压器
  • LTC3646 / LTC3646-1 - 40V、1A、同步降压型稳压器
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