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LTC1703典型应用图例一
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LTC1703封装图解一
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LINEAR产品 - LTC1703介绍

LTC1703 - LTC1703是Dual 550kHz Synchronous 2-Phase Switching Regulator Controller with 5-Bit VID

LTC1703是LINEAR凌力尔特公司的一款数字可编程的降压型稳压器产品，LTC1703是LTC1703是Dual 550kHz Synchronous 2-Phase Switching Regulator Controller with 5-Bit VID，本站介绍了LTC1703的封装应用图解、特点和优点、功能等，并给出了与LTC1703相关的LINEAR元器件型号供参考。

LTC1703 - LTC1703是Dual 550kHz Synchronous 2-Phase Switching Regulator Controller with 5-Bit VID - 数字可编程的降压型稳压器 - 电源管理 - 凌力尔特

LTC1703 - Dual 550kHz Synchronous 2-Phase Switching Regulator Controller with 5-Bit VID

LTC1703 - Dual 550kHz Synchronous 2-Phase Switching Regulator Controller with 5-Bit VID - Linear Technology（凌力尔特）

功能描述

The LTC1703 is a dual switching regulator controller optimized for high efficiency with low input voltages. It includes two complete, on-chip, independent switching regulator controllers. Each is designed to drive a pair of external N-channel MOSFET devices in a voltage mode feedback, synchronous buck configuration. The LTC1703 includes digital output voltage adjustment on side 1 that conforms to the Intel Mobile VID specification. It uses a constant-frequency, true PWM design switching at 550kHz, minimizing external component size and cost and optimizing load transient performance. The synchronous buck architecture automatically shifts to discontinuous and then to BurstMode? operation as the output load decreases, ensuring maximum efficiency over a wide range of load currents.

The LTC1703 features an onboard reference trimmed to 1% and delivers better than 1.5% regulation at the converter outputs. An optional latching FAULT mode protects the load if the output rises 15% above the intended voltage. Each channel can be enabled independently; with both channels disabled, the LTC1703 shuts down and supply current drops below 100μA.

特点
  • Side 1 Output Is Compliant with Intel Mobile VID Specifications (Includes 5-Bit DAC)
  • 0.9V to 2.0V Output Voltage with 25mV/50mV Steps
  • Two Sides Run Out-of-Phase to Minimize CIN
  • Precision Internal 0.8V ±1% Reference
  • Two Independent PWM Controllers in One Package
  • All N-Channel External MOSFET Architecture
  • No External Current Sense Resistor
  • 550kHz Switching Frequency Minimizes External Component Size
  • Very Fast Transient Response
  • Up to 25A Output Current per Channel
  • Low Shutdown Current: < 100μA
  • Small 28-Pin SSOP Package
    • 应用
  • Mobile Pentium? III Processor Systems
  • Microprocessor Core and I/O Supplies
  • Multiple Logic Supply Generator
  • 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)
    LTC1703CG SSOP-28 C $5.95 $5.20
    LTC1703CG#PBF SSOP-28 C $5.95 $5.20
    LTC1703CG#TR SSOP-28 C $5.30
    LTC1703CG#TRPBF SSOP-28 C $5.30
    LTC1703IG SSOP-28 I $8.93 $6.00
    LTC1703IG#PBF SSOP-28 I $8.93 $6.00
    LTC1703IG#TR SSOP-28 I $6.10
    LTC1703IG#TRPBF SSOP-28 I $6.10
    下面可能是您感兴趣的Linear Technology（凌力尔特）元器件
  • LTC3880 / LTC3880-1 - 具数字电源系统管理功能的双输出多相降压型 DC/DC 控制器
  • LT3080 - 可调 1.1A、单电阻、低压差稳压器
  • LTM4628 - 双通道 8A 或单通道 16A DC/DC uModule 稳压器
  • LT1763 - 500mA、低噪声、LDO 微功率稳压器
  • LT3580 - 具 2A 开关、软起动和同步功能的升压/负输出 DC/DC 转换器
  • LTC3789 - 高效率、同步、四开关降压-升压型控制器
  • LTC3883 / LTC3883-1- 具数字电源系统管理功能的单相降压型 DC/DC 控制器
  • LT1618 - 恒定电流/恒定电压 1.4MHz 升压型 DC/DC 转换器
  • LTC3639 - 高效率、150V、100mA 同步降压型稳压器
  • LTM4627 - 15A、DC/DC uModule 稳压器
    • 下面可能是您感兴趣的凌力尔特公司数字可编程的降压型稳压器元器件
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