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LTC1704 - 典型应用图例：
LTC1704典型应用图例一
LTC1704典型应用图例二
LTC1704 - 封装图解：
LTC1704封装图解一
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LINEAR产品 - LTC1704介绍

LTC1704 - LTC1704是550kHz Synchronous Switching Regulator Controller Plus Linear Regulator Controller

LTC1704是LINEAR凌力尔特公司的一款外部开关电源控制器产品，LTC1704是LTC1704是550kHz Synchronous Switching Regulator Controller Plus Linear Regulator Controller，本站介绍了LTC1704的封装应用图解、特点和优点、功能等，并给出了与LTC1704相关的LINEAR元器件型号供参考。

LTC1704 - LTC1704是550kHz Synchronous Switching Regulator Controller Plus Linear Regulator Controller - 外部开关电源控制器 - 电源管理 - 凌力尔特

LTC1704 - 550kHz Synchronous Switching Regulator Controller Plus Linear Regulator Controller

LTC1704 - 550kHz Synchronous Switching Regulator Controller Plus Linear Regulator Controller - Linear Technology（凌力尔特）

功能描述

The LTC1704/LTC1704B include a high power synchronous switching regulator controller plus a linear regulator controller. The switching regulator controller is designed to drive a pair of N-channel MOSFETs in a voltage mode, synchronous buck configuration to provide the main supply. The constant frequency, true PWM architecture switches at 550kHz, minimizing external component size, cost and optimizing load transient performance. The LTC1704 features automatic transition to power saving Burst Mode operation at light loads. The LTC1704B does not shift into Burst Mode operation at light loads, eliminating low frequency output ripple at the expense of light load efficiency. The linear regulator controller is designed to drive an external NPN power transistor to provide up to 2A of current to an auxiliary load.

The LTC1704/LTC1704B deliver better than ±1.5% DC accuracy at the switcher outputs and ±2% at the linear regulator outputs. High performance feedback loops allow the circuit to keep total output regulation within ±5% under all transient conditions. An open-drain PGOOD output indicates when both outputs are within ±10% of their regulated values.

特点
  • Dual Regulated Outputs: One Switching Regulator and One Linear Regulator
  • Excellent DC Accuracy: ±1.5% for Switcher and ±2% for Linear Regulator
  • External N-Channel MOSFET Architecture
  • No External Current Sense Resistor Required
  • Burst Mode Operation at Light Load (LTC1704)
  • Continuous Switching at Light Load (LTC1704B)
  • Linear Regulator with Programmable Current Limit
  • Linear Regulator with Programmable Start-Up Delay
  • Low Shutdown Current: <150µA
  • High Efficiency Over Wide Load Current Range
  • PGOOD Flag Monitors Both Outputs
  • Small 16-Pin Narrow SSOP Package
    • 应用
  • Multiple Logic Supply Generator
  • Distributed Power Applications
  • High Efficiency Power Conversion
    • 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)
    LTC1704BEGN SSOP-16 E $5.89 $4.10
    LTC1704BEGN#PBF SSOP-16 E $5.89 $4.10
    LTC1704BEGN#TR SSOP-16 E $4.20
    LTC1704BEGN#TRPBF SSOP-16 E $4.20
    LTC1704EGN SSOP-16 E $5.89 $4.10
    LTC1704EGN#PBF SSOP-16 E $5.89 $4.10
    LTC1704EGN#TR SSOP-16 E $4.20
    LTC1704EGN#TRPBF SSOP-16 E $4.20
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