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供应具有轻载模式的4.5V至18V 输入4A 同步降压DC-DC转换器PS54426
供应具有轻载模式的4.5V至18V 输入4A 同步降压DC-DC转换器PS54426
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供应具有轻载模式的4.5V至18V 输入4A 同步降压DC-DC转换器PS54426

型号/规格:

TPS54426PWPR,PS54426

品牌/商标:

TI(德州仪器)

PDF资料:

点击下载PDF

产品信息

具有轻载模式的4.5V至18V 输入4A 同步降压转换器TPS54426

 

描述 :

IC BUCK SYNC ADJ 4A 14HTSSOP

系列 : Swift™, D-Cap2™, Eco-Mode™
类型 : 降压(降压)
输出类型 : 可调式
输出数 : 1
输出电压 : 0.76 V ~ 5.5 V
输入电压 : 4.5 V ~ 18 V
PWM 型 : 混合物
频率 - 开关 : 700kHz
电流 - 输出 : 4A
同步整流器 :
工作温度 : -40°C ~ 85°C
安装类型 : 表面贴装
封装/外壳 : 14-TSSOP (0.173", 4.40mm 宽) 裸露焊盘
包装 : 带卷 (TR)
供应商设备封装 : 14-HTSSOP

说明:

The TPS54426 is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54426 enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54426 uses the D-CAP2™ mode control which provides a very fast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-mode™ operation at light loads. Eco-mode™ allows the TPS54426 to maintain high efficiency during lighter load conditions. The TPS54426 also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP, SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 18-V VIN input. The output voltage can be programmed between 0.76 V and 5.5 V. The device also features an adjustable soft start time and a power good function. The TPS54426 is available in the 14-pin HTSSOP package and the 16 pin QFN package, designed to operate from –40°C to 85°C.

 

特性:

  • D-CAP2™ Mode Enables Fast Transient Response
  • Low Output Ripple and Allows Ceramic Output Capacitor
  • Wide VIN Input Voltage Range: 4.5 V to 18 V
  • Output Voltage Range: 0.76 V to 5.5 V
  • Highly Efficient Integrated FET’s Optimized
    for Lower Duty Cycle Applications
    – 65 mΩ (High Side) and 55 mΩ (Low Side)
  • High Efficiency, less than 10 µA at shutdown
  • High Initial Bandgap Reference Accuracy
  • Adjustable Soft Start
  • Pre-Biased Soft Start
  • 700-kHz Switching Frequency (fSW)
  • Cycle By Cycle Over Current Limit
  • Power Good Output
  • Auto-Skip Eco-mode for High Efficiency at Light Load
  • APPLICATIONS
    • Wide Range of Applications for Low Voltage System
      • Digital TV Power Supply
      • High Definition Blu-ray Disc Players
      • Networking Home Terminal
      • Digital Set Top Box (STB)

 

框图: