TPS61252 具有可调节输入电流限制的 3.5MHz、1.5A、92% 高效升压转换器 | 德州仪器 TI.com.cn

TPS61252
此产品已上市,且可供购买。 可提供某些产品的较新替代品。
具有可调节输入电流限制的 3.5MHz、1.5A、92% 高效升压转换器

具有可调节输入电流限制的 3.5MHz、1.5A、92% 高效升压转换器 - TPS61252
数据表
 

描述

The TPS61252 device provides a power supply solution for products powered by either a three-cell alkaline, NiCd or NiMH battery, or an one-cell Li-Ion or Li-polymer battery. The wide input voltage range is ideal to power portable applications like mobile phones or computer peripherals. The device has a resistor programmable (RILIM) input current limit and is suitable for a wide variety of applications.

During light loads, the device automatically enters skip mode (PFM), which allows the converter to maintain the required output voltage, while only drawing 30 µA quiescent current from the battery. This allows maximum efficiency at lowest quiescent currents.

TPS61252 allows the use of small inductors and capacitors to achieve a small solution size. The possibility to reduce the current limit by a external resistor offers the potential use of physically even smaller inductors with lower rated currents to further reduce total solution sizes of the power supply. During shutdown, the load is completely disconnected from the battery. The TPS61252 is available in a 8-pin WSON package measuring 2 mm × 2 mm (DSG).

特性

  • Resistor Programmable Input Current Limit
    • ±20% Current Accuracy at 500 mA over
      Full Temperature Range
    • Programmable from 100 mA up to 1500 mA
  • Up to 92% Efficiency
  • VIN Range from 2.3 V to 6.0 V
  • Power Good Indicates Appropriate Output Voltage Level
  • Adjustable Output Voltage up to 6.5 V
  • 100% Duty-Cycle Mode When VIN > VOUT
  • Load Disconnect and Reverse Current Protection
  • Short Circuit Protection
  • Typical Operating Frequency 3.25 MHz
  • Available in a 2-mm × 2-mm WSON-8 Package
  • APPLICATIONS
    • USB Host Supplies from a Single Li-Ion Battery
    • Current Limited Applications
    • Li-Ion Applications
    • Audio Applications
    • RF-PA Buffer

All other trademarks are the property of their respective owners

New!
WEBENCH® Power Designer is now even easier to use. Try it now.

WEBENCH® Designer TPS61252

  最小   最大 范围
输入电压  V 2.3 to 6.0V
输出电压  V 3 to 6.5V
输出电流  A ≤ 1.5A
环境温度  °C -40 to 85°C

参数

与其它产品相比 升压转换器(集成开关) 邮件 下载到电子表格中
Part number 立即下单 Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Switch current limit (Typ) (A) Regulated outputs (#) Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Iq (Typ) (mA) Features Duty cycle (Max) (%) Operating temperature range (C) Type Rating Package Group
TPS61252 立即下单 2.3     6     3     6.5     1.5     1     3500     3500     0.03     Synchronous Rectification     100     -40 to 85     Converter     Catalog     WSON | 8    
TPS61251 立即下单 2.3     6     3     6.5     1.5     1     3500     3500     0.03     Synchronous Rectification     100     -40 to 85     Converter     Catalog     WSON | 8