Texas Instruments TPS61099

Description

The TPS61099x device is a synchronous boostconverter with 1-μA ultra-low quiescent current. Thedevice is designed for products powered by analkaline battery, NiMH rechargeable battery, Li-Mnbattery or rechargeable Li-Ion battery, for which highefficiency under light load condition is critical toachieve long battery life operation.The TPS61099x boost converter uses a hystereticcontrol topology to obtain maximal efficiency atminimal quiescent current. It only consumes 1-μAquiescent current under light load condition and canachieve up to 75% efficiency at 10-μA load with fixedoutput voltage version. It can also support up to 300-mA output current from 3.3 V to 5 V conversion, andachieve up to 93% at 200-mA load.The TPS61099x also offers both Down Mode andPass-Through operations for different applications. InDown Mode, the output voltage can still be regulatedat target value even when input voltage is higher thanoutput voltage. In Pass-Through Mode, the outputvoltage follows input voltage. The TPS61099x exitsDown Mode and enters into Pass-Through Modewhen VIN > VOUT + 0.3 V.The TPS61099x supports true shutdown functionwhen it is disabled, which disconnects the load fromthe input supply to reduce the current consumption.The TPS61099x offers both adjustable output voltageversion and fixed output voltage versions. It isavailable in 6-ball 1.23-mm x 0.88-mm WCSPPackage.

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
• Adjustable Output Voltage from 1.8 V to 5.5 V
• Fixed Output Voltage Versions 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 x 0.88 mm WCSP Package

Typical applications

• Optical Heart Rate Monitor LED Bias
• Low Power Wireless Applications
• Battery Powered Systems
• Memory LCD Bias
• Wearable Applications/ Portable Products

More information

• Datasheet
• IC product information