TPS61021A Series

3-A Boost Converter with 0.5-V Ultra Low Input Voltage

Catalog

3-A Boost Converter with 0.5-V Ultra Low Input Voltage

Part	Frequency - Switching	Supplied Contents	Voltage - Input [Max]	Voltage - Input [Min]	Main Purpose	Regulator Topology	Board Type	Utilized IC / Part	Voltage - Output	Outputs and Type	Outputs and Type	Current - Output	Output Type	Package / Case	Mounting Type	Voltage - Output (Max) [Max]	Topology	Operating Temperature [Min]	Operating Temperature [Max]	Voltage - Input (Max) [Max]	Voltage - Input (Min) [Min]	Number of Outputs	Supplier Device Package	Function	Voltage - Output (Min/Fixed)	Output Configuration
Texas Instruments TPS61021EVM-723	2 MHz	Board(s)	3.2 V	0.9 V	DC/DC Step Up	Boost	Fully Populated	TPS61021	3.3 V	Non-Isolated	1	2.3 A
Texas Instruments TPS61021DSGR	2 MHz											3 A	Adjustable	8-WFDFN Exposed Pad	Surface Mount	4 V	Boost	-40 °C	125 ¯C	4.4 V	0.5 V	1	8-WSON (2x2)	Step-Up	1.8 V	Positive
Texas Instruments TPS61021ADSGR	2 MHz											3 A	Adjustable	8-WFDFN Exposed Pad	Surface Mount	4 V	Boost	-40 °C	125 ¯C	4.4 V	0.5 V	1	8-WSON (2x2)	Step-Up	1.8 V	Positive
Texas Instruments TPS61021ADSGT	2 MHz											3 A	Adjustable	8-WFDFN Exposed Pad	Surface Mount	4 V	Boost	-40 °C	125 ¯C	4.4 V	0.5 V	1	8-WSON (2x2)	Step-Up	1.8 V	Positive

Catalog

3-A Boost Converter with 0.5-V Ultra Low Input Voltage

Key Features

• Input Voltage Range: 0.5 V to 4.4 V0.9 V Minimum Input Voltage for StartupOutput Voltage Setting Range: 1.8 V to 4.0 V91% Efficiency at VIN= 2.4 V, VOUT= 3.3 V andIOUT= 1.5 A2.0-MHz Switching FrequencyIOUT> 1.5 A at VOUT= 3.3 V when VIN> 1.8 V17-µA Typical Quiescent Current±2.5% Reference Voltage Accuracy over –40°C to125°CPFM Operation Mode at Light LoadTrue Disconnection Between Input and OutputDuring ShutdownOutput Over Voltage ProtectionOutput Short Circuit ProtectionThermal Shutdown Protection2-mm × 2-mm WSON PackageInput Voltage Range: 0.5 V to 4.4 V0.9 V Minimum Input Voltage for StartupOutput Voltage Setting Range: 1.8 V to 4.0 V91% Efficiency at VIN= 2.4 V, VOUT= 3.3 V andIOUT= 1.5 A2.0-MHz Switching FrequencyIOUT> 1.5 A at VOUT= 3.3 V when VIN> 1.8 V17-µA Typical Quiescent Current±2.5% Reference Voltage Accuracy over –40°C to125°CPFM Operation Mode at Light LoadTrue Disconnection Between Input and OutputDuring ShutdownOutput Over Voltage ProtectionOutput Short Circuit ProtectionThermal Shutdown Protection2-mm × 2-mm WSON Package

Description

The TPS61021A provides a power supply solution for portable or smart devices powered by alkaline, NiMH, Li-Mn, or Li-ion batteries. The TPS61021A is capable of outputting 3.3-V voltage and 1.5-A current from a battery discharged to as low as 1.8 V. Capable of operating with 0.5-V input voltage enables the TPS61021A to extend the battery run time. The TPS61021A operates at 2-MHz switching frequency at heavy load and enters power-save mode at light load to maintain high efficiency over the entire load current range. The device only consumes a 17-µA quiescent current from VOUTin light load condition. During shutdown, the load is completely disconnected from the input. In addition, The TPS61021A provides 4.35-V output overvoltage protection, output short circuit protection, and thermal shutdown protection. The TPS61021A offers a very small solution size due to low count of external components. It allows the use of small inductors and output capacitors with the 2-MHz switching frequency. The TPS61021A is available in 2.0-mm × 2.0-mm WSON package. The TPS61021A provides a power supply solution for portable or smart devices powered by alkaline, NiMH, Li-Mn, or Li-ion batteries. The TPS61021A is capable of outputting 3.3-V voltage and 1.5-A current from a battery discharged to as low as 1.8 V. Capable of operating with 0.5-V input voltage enables the TPS61021A to extend the battery run time. The TPS61021A operates at 2-MHz switching frequency at heavy load and enters power-save mode at light load to maintain high efficiency over the entire load current range. The device only consumes a 17-µA quiescent current from VOUTin light load condition. During shutdown, the load is completely disconnected from the input. In addition, The TPS61021A provides 4.35-V output overvoltage protection, output short circuit protection, and thermal shutdown protection. The TPS61021A offers a very small solution size due to low count of external components. It allows the use of small inductors and output capacitors with the 2-MHz switching frequency. The TPS61021A is available in 2.0-mm × 2.0-mm WSON package.