TPS63031 Series

High Efficient Single Inductor Buck-Boost Converter with 1-A Switches

Catalog

High Efficient Single Inductor Buck-Boost Converter with 1-A Switches

Part	Number of Outputs	Frequency - Switching	Output Configuration	Synchronous Rectifier	Voltage - Output (Min/Fixed)	Output Type	Supplier Device Package [x]	Supplier Device Package [y]	Supplier Device Package	Current - Output	Topology	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Input (Min) [Min]	Voltage - Input (Max) [Max]	Mounting Type	Function	Package / Case
Texas Instruments TPS63031DSKT	1	2.4 MHz	Positive		3.3 V	1.81 mOhm	2.5	2.5	10-SON	900 mA	Buck-Boost	85 °C	-40 °C	1.8 V	5.5 V	Surface Mount	Step-Up/Step-Down	10-WFDFN Exposed Pad
Texas Instruments TPS63031DSKTG4	1	2.4 MHz	Positive		3.3 V	1.81 mOhm	2.5	2.5	10-SON	900 mA	Buck-Boost	85 °C	-40 °C	1.8 V	5.5 V	Surface Mount	Step-Up/Step-Down	10-WFDFN Exposed Pad

Catalog

High Efficient Single Inductor Buck-Boost Converter with 1-A Switches

Key Features

• Input voltage range: 1.8 V to 5.5 VFixed and adjustable output voltage options from 1.2 V to 5.5 VUp to 96% efficiency800-mA Output current at 3.3 V in step-down mode (VIN= 3.6 V to 5.5 V)Up to 500-mA output current at 3.3 V in boost mode (VIN> 2.4 V)Automatic transition between step-down and boost modeDevice quiescent current less than 50 µAPower-save mode for improved efficiency at low-output powerForced fixed frequency operation and synchronization possibleLoad disconnect during shutdownOvertemperature protectionAvailable in a small 2.5-mm × 2.5-mm 10-pin VSON package (QFN)Input voltage range: 1.8 V to 5.5 VFixed and adjustable output voltage options from 1.2 V to 5.5 VUp to 96% efficiency800-mA Output current at 3.3 V in step-down mode (VIN= 3.6 V to 5.5 V)Up to 500-mA output current at 3.3 V in boost mode (VIN> 2.4 V)Automatic transition between step-down and boost modeDevice quiescent current less than 50 µAPower-save mode for improved efficiency at low-output powerForced fixed frequency operation and synchronization possibleLoad disconnect during shutdownOvertemperature protectionAvailable in a small 2.5-mm × 2.5-mm 10-pin VSON package (QFN)

Description

The TPS6303x devices provide a power supply solution for products powered by either a two-cell or three-cell alkaline, NiCd or NiMH battery, or a one-cell Li-ion or Li-polymer battery. Output currents can go as high as 600 mA while using a single-cell Li-ion or Li-polymer battery, and discharge it down to 2.5 V or lower. The buck-boost converter is based on a fixed-frequency, pulse width modulation (PWM) controller using synchronous rectification to obtain maximum efficiency. At low-load currents, the converter enters power-save mode to maintain high efficiency over a wide load current range. The power-save mode can be disabled, forcing the converter to operate at a fixed switching frequency. The maximum average current in the switches is limited to a typical value of 1000 mA. The output voltage is programmable using an external resistor divider, or is fixed internally on the chip. The converter can be disabled to minimize battery drain. During shutdown, the load is disconnected from the battery. The TPS6303x devices operate over a free air temperature range of –40°C to 85°C. The devices are packaged in a 10-pin VSON package measuring 2.5-mm × 2.5-mm (DSK). The TPS6303x devices provide a power supply solution for products powered by either a two-cell or three-cell alkaline, NiCd or NiMH battery, or a one-cell Li-ion or Li-polymer battery. Output currents can go as high as 600 mA while using a single-cell Li-ion or Li-polymer battery, and discharge it down to 2.5 V or lower. The buck-boost converter is based on a fixed-frequency, pulse width modulation (PWM) controller using synchronous rectification to obtain maximum efficiency. At low-load currents, the converter enters power-save mode to maintain high efficiency over a wide load current range. The power-save mode can be disabled, forcing the converter to operate at a fixed switching frequency. The maximum average current in the switches is limited to a typical value of 1000 mA. The output voltage is programmable using an external resistor divider, or is fixed internally on the chip. The converter can be disabled to minimize battery drain. During shutdown, the load is disconnected from the battery. The TPS6303x devices operate over a free air temperature range of –40°C to 85°C. The devices are packaged in a 10-pin VSON package measuring 2.5-mm × 2.5-mm (DSK).