型号 封装 在线定购
TPS62222DDCR(查看) SOT5


技术资料—— TPS62222 PDF技术资料

TPS62222 概述

The TPS62222 device is a high-efficiency, synchronous step-down converter ideally suited for portable systems powered by 1-cell Li-Ion or 3-cell NiMH/NiCd batteries. The TPS62222 is also suitable to operate from a standard 3.3-V or 5-V voltage rail.

With an output voltage range of 6 V down to 0.7 V and up to 400-mA output current, the TPS62222 is ideal for powering the low voltage TMS320 DSP family and processors used in PDAs, pocket PCs, and smart phones. Under nominal load current, the TPS62222 operates with a fixed switching frequency of typically 1.25 MHz. At light load currents, the part enters the power-save mode operation; the switching frequency is reduced and the quiescent current is typically only 15 µA; therefore, the TPS62222 achieves the highest efficiency over the entire load current range.

TPS62222 参数
TPS62222 基本参数
Vin (V)   2.5~6
Vout (V)   1.8~1.8
TPS62222 其他特性
可调输出端   1
Iq (Typ)(mA)   0.015
TPS62222 封装与引脚

TPS62222 特性

  • High-Efficiency Synchronous Step-Down Converter With up to 95% Efficiency
  • 2.5-V to 6-V Input Voltage Range
  • Fixed Output Voltage
  • Up to 400-mA Output Current
  • 1.25-MHz Fixed Frequency PWM Operation
  • Highest Efficiency Over Wide Load Current Range Due to Power-Save Mode
  • 15 µA Typical Quiescent Current
  • Soft Start
  • 100% Duty Cycle Low-Dropout Operation
  • Dynamic Output-Voltage Positioning
  • Available in TSOT23 Package

TPS62222 应用

  • PDAs and Pocket PC
  • Cellular Phones, Smart Phones
  • OMAP™ and Low Power DSP Supply
  • Digital Cameras
  • Portable Media Players
  • Portable Equipment
  • WLAN PC Cards