• High Efficiency—Up to 95%
• V_IN Range From 2.5 V to 6 V
• 2.25 MHz Fixed Frequency Operation
• Output Current 400 mA and 600 mA
• Adjustable Output Voltage From 0.6V to V_IN
• EasyScale™ Optional One-Pin Serial Interface for Dynamic Output Voltage Adjustment
• TPS62401 Fixed Output Voltage Option:
  • 1.1V/1.575V 400mA
  • 1.8V 600mA
• Power Save Mode at Light Load Currents
• 180° Out of Phase Operation
• Output Voltage Accuracy in PWM Mode ±1%
• Typical 32-µA Quiescent Current for both Converters
• 100% Duty Cycle for Lowest Dropout
• Available in a 10-Pin QFN (3×3mm)
• APPLICATIONS
  • Cell Phones, Smart-phones
  • PDAs, Pocket PCs
  • OMAP™ and Low Power DSP Supply
  • Portable Media Players
  • Digital Radio
  • Digital Cameras

EasyScale, OMAP, PowerPad, PowerPAD are trademarks of Texas Instruments.

The TPS6240x device series are synchronous dual step-down DC-DC converters optimized for battery powered portable applications. They provide two independent output voltage rails powered by 1-cell Li-Ion or 3-cell NiMH/NiCD batteries. The devices are also suitable to operate from a standard 3.3V or 5V voltage rail.

With an input voltage range of 2.5V to 6V the TPS62400 is ideal to power portable applications like smart phones, PDAs and other portable equipment.

With the EasyScale™ serial interface the output voltages can be modified during operation. It therefore supports Dynamic Voltage Scaling for low power DSP and processors.

The TPS62401 provides fixed output voltages of 1.1V/1.575V and 1.8V.

The TPS6240x operates at 2.25MHz fixed switching frequency; and, enters the power save mode operation at light load currents to maintain high efficiency over the entire load current range. For low noise applications the devices can be forced into fixed frequency PWM mode by pulling the MODE/DATA pin high. In the shutdown mode, the current consumption is reduced to 1.2µA, typical. The devices allow the use of small inductors and capacitors to achieve a small solution size.

The TPS62400 is available in a 10-pin leadless package (3×3mm QFN)