• Input Voltage Range VIN From 1.9 V to 3.9 V
• Typ. 30-nA Ultra Low-Power Bypass Mode
• Typ. 25-μA DC-DC Quiescent Current
• Internal Feedback Divider Disconnect
• Typical 2.1-Ω Bypass Switch Between VIN and VOUT
• Automatic Transition from DC-DC to Bypass Mode
• Up to 3-MHz Switch Frequency
• Up to 95% DC-DC Efficiency
• Open-Drain Status Output STAT
• Output Peak Current up to 100 mA
• Fixed Output Voltages 1.9 V, 2.05 V, 2.1 V, 2.3 V
• Small External Output Filter Components 2.2 μH and 2.2 μF
• Optimized For Low Output Ripple Voltage
• Small 1 × 1.5 × 0.6-mm3 USON Package
• 12-mm2 Minimum Solution Size

• CC2540 Bluetooth™ Low-Energy System-On-Chip Solution
• Low-Power Wireless Applications
• RF4CE, Metering

The TPS62730 is a high frequency synchronous step-down DC-DC converter optimized for ultra low-power wireless applications. The device is optimized to supply TI's Low-Power Wireless sub 1-GHz and 2.4-GHz RF transceivers and System-On-Chip (SoC) solutions. The TPS62730 reduces the current consumption drawn from the battery during TX and RX mode by a high efficient step-down voltage conversion. The device provides an output current of up to 100 mA and allows the use of tiny and low-cost chip inductors and capacitors. With an input voltage range of 1.9 V to 3.9 V, the device supports Li-primary battery chemistries such as Li-SOCl2, Li-SO2, Li-MnO2, and also two cell alkaline batteries.

The TPS62730 features an Ultra Low-Power bypass mode with typical 30-nA current consumption to support sleep and low power modes of TI's CC2540 Bluetooth Low Energy and CC430 SoC solutions. In this bypass mode, the output capacitor of the DC-DC converter is connected through an integrated typical 2.1-Ω bypass switch to the battery.