The TPS62270 device is a high efficiency synchronous step down DC-DC converter optimized for battery powered portable applications. It provides up to 400 mA output current from a single Li-Ion cell.

With an input voltage range of 2 V to 6 V the device supports Li-Ion batteries with extended voltage range, and is ideal to power portable applications like mobile phones and other portable equipment.

The TPS62270 operates at 2.25 MHz fixed switching frequency and enters Power Save Mode operation at light load currents to maintain high efficiency over the entire load current range. The Power Save Mode is optimized for low output voltage ripple.

With the VSEL pin, two different fixed output voltages can be selected. This function features a dynamic voltage scaling for low power processor cores.

In the shutdown mode, the current consumption is reduced to less than 1µA. TPS62270 allows the use of small inductors and capacitors to achieve a small solution size.

The TPS62270 is available in a 2 mm × 2 mm, 6-pin SON package.

• High Efficiency Step Down Converter
• Output Current up to 400 mA
• VIN Range From 2V to 6V for Li-Ion Batteries With Extended Voltage Range
• 2.25 MHz Fixed Frequency Operation
• Pin-Selectable Fixed Output Voltage
• Power Save Mode for Highest Efficiency
• Automatic transition between PFM and PWM Mode
• Voltage Positioning in PFM Mode
• Typical 15-μA Quiescent Current
• 100% Duty Cycle for Lowest Dropout
• Available in 2×2×0,8 mm SON Package
• Allows <1 mm Solution Height
• APPLICATIONS
  • Low Power Processor Supply
  • Cell Phones, Smart-phones
  • Navigation Systems
  • Low Power DSP Supply
  • Portable Media Players
  • Digital Cameras

• Vin (Min) (V)
• 2
• Vin (Max) (V)
• 6
• Vout (Min) (V)
• 2.5
• Vout (Max) (V)
• 3.3
• Iout (Max) (A)
• 0.4
• Iq (Typ) (uA)
• 15
• Switching frequency (Min) (kHz)
• 2000
• Switching frequency (Max) (kHz)
• 2500
• Features
• Enable, Light Load Efficiency, Synchronous Rectification, Adaptive/Dynamic Voltage Scaling
• Rating
• Catalog
• Regulated outputs (#)
• 1
• Control mode
• Voltage Mode
• Duty cycle (Max) (%)
• 100

TPS62273的完整型号有：TPS62273DRVR、TPS62273DRVT，以下是这些产品的关键参数及官网采购报价：

TPS62273DRVR，工作温度：-40 to 85，封装：WSON (DRV)-6，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网TPS62273DRVR的批量USD价格：.436（1000+）

TPS62273DRVT，工作温度：-40 to 85，封装：WSON (DRV)-6，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网TPS62273DRVT的批量USD价格：.523（1000+）

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