概览

优势和特点

  • Dual 4A Outputs
  • Configurable as Single Output, 2-Phase 8A Buck
  • High Efficiency: 12mΩ High-Side and 8mΩ Low-Side
  • ±1% Maximum Total DC Output Error
  • Wide Bandwidth, Fast Transient Response
  • VIN Range: 2.25V to 5.5V
  • VOUT Range: 0.5V to VIN
  • Programmable Frequency to 3MHz
  • Low Ripple Burst Mode® Operation with Low IQ
  • Shutdown Current: 1.4μA
  • 35ns Minimum On-Time
  • Internal Compensation
  • Precision Enable, Power Good for Power Sequencing
  • Tiny 30-Lead, 2.2mm × 2.7mm WLCSP Package

产品详情

The LTC3314A features dual monolithic synchronous 4A step-down converters in a 2.2mm × 2.7mm package for space saving applications with demanding performance requirements. Using a constant frequency, peak current mode architecture at switching frequencies up to 3MHz, both bucks achieve high efficiency and fast transient response with small external components. The LTC3314A can also be configured as a single output, 2-phase 8A step-down converter.

The LTC3314A operates in forced continuous or pulse-skipping mode for low noise, or in Burst Mode operation for high efficiency at light loads. The common switching frequency is set to a default 2MHz, programmed with an external resistor, or synchronized to an external oscillator via the MODE/SYNC pin. To reduce input ripple current, the dual converters switch 180 degrees out of phase.

With an input range of 2.25V to 5.5V the LTC3314A regulates to outputs as low as 500mV. Other features include precision enable thresholds, PGOOD signals, output overvoltage protection, thermal shutdown, and output short-circuit protection. The device is available in a 30-lead, 2.2mm × 2.7mm WLCSP package.

APPLICATIONS

  • Servers, Telecom Power Supplies, Optical Networking
  • Distributed DC Power Systems (POL)
  • FPGA, ASIC, μP Core Supplies
  • Industrial/Automotive/Communications

产品生命周期 icon-recommended 推荐新设计使用

本产品已上市。数据手册包含所有最终性能规格和工作条件。ADI公司推荐新设计使用这些产品。

工具及仿真模型

LTspice

LTspice®是一款强大高效的免费仿真软件、原理图采集和波形观测器,为改善模拟电路的仿真提供增强功能和模型。

LTspice

LTspice中提供以下器件型号:

LTC3314A

LTpowerCAD

LTpowerCAD®是一种电源设计程序,它选择功率级元件,提供详细效率信息,显示快速环路波特图稳定性和负载瞬态分析,并可导出至LTspice进行仿真。

LTPowerCAD

LTpowerCAD中提供以下器件的设计工具:

LTC3314A

设计资源

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