TPS61099YFFR Description

To achieve maximum efficiency with minimal quiescent current, the TPS61099YFFR boost converter employs a hysteretic control scheme. With the fixed output voltage version, it consumes only 1-A quiescent current under light load and can reach up to 75 percent efficiency under 10-A load. It can also convert 3.3-V to 5-V at up to 300 mA output current and achieve up to 93 percent efficiency at 200 mA load.

For various applications, the TPS61099YFFR supports both Down mode and Pass-Through operations. Even when the input voltage is higher than the output voltage, the output voltage can be regulated at the target value in Down mode. The output voltage follows the input voltage in Pass-Through mode. When VIN > VOUT + 0.5 V, the TPS61099YFFR exits Down mode and enters Pass-Through mode. When disabled, the TPS61099YFFR provides true shutdown, which disconnects the load from the input supply to reduce current usage.

TPS61099YFFR Features

• 600-nA ultra-low IQ into VOUT pin

• 400-nA ultra-low IQ into VIN pin

• Operating input voltage from 0.7 V to 5.5 V

• The adjustable output voltage from 1.8 V to 5.5 V

• Fixed output voltage versions are available

• Minimum 0.8-A switch peak current limit

• Regulated output voltage in down mode

• True disconnection during shutdown

• Up to 75% efficiency at 10-μA load with fixed output voltage versions

• Up to 93% efficiency from 10-mA to 300-mA load

• 6-ball 1.23-mm × 0.88-mm WCSP package and 2-mm × 2-mm WSON package

• Create a custom design using the TPS61099x with the WEBENCH? Power Designer

TPS61099YFFR Applications

• Memory LCD bias

• Optical heart rate monitor LED bias

• Wearable applications

• Low-power wireless applications

• Portable products

• Battery-powered systems