Voltage regulator extends battery life

Texas Instruments Inc. introduced a 3-MHz, 100-mA synchronous step-down DC/DC converter, which integrates a bypass switch and a unique DCS-Control technology, an advanced regulation topology that combines the advantages of hysteretic and voltage mode control.

According to TI, the TPS62730 extends battery run-time by 20 percent in low-power wireless and MSP430 MCU-based applications. It has an operating current of 25 µA and supports many low-power applications, such as Bluetooth low energy systems, metering and building technologies, mobile phones, consumer-electronics, medical and human-interface devices.

The TPS62730 reduces current consumption drawn from the battery in transmit and receive modes by achieving 95-percent power conversion efficiency and an on-chip bypass switch with only 30-nA of power. The converter also generates less than 15mVpp typical output voltage ripple, allowing it to support many low-power RF applications.

Key highlights:

• TPS62730 features DCS-Control with excellent AC-line and load transient regulation.
• Low-output voltage ripple of <15mVpp typical over the entire load range.
• Smallest solution size of 12 mm²: 3-MHz frequency and fixed output voltage options require only three external components.
• Input-voltage range of 1.9 V to 3.9 V supports Li-primary battery chemistries such as Li-SOCI2, LiSo2, Li-MnO2 and also two alkaline batteries.
• Ultra-low-power shutdown/bypass-mode current of typical 30-nA supports sleep and low power modes of modern RF transceivers.
• DC/DC operation mode provides regulated output voltage consuming typical 25-µA quiescent current.

Pricing:  $0.85 in quantities of 1,000.

Availability: Now from TI and its authorized network of distributors in a small, 6-pin, 1- mm x 1.5-mm x 0.6-mm SON package.

Datasheet: Click here.