TPS40222 Series

1.6A, 1.25-MHz Buck Converter in a 3 mm SON Package

Catalog

1.6A, 1.25-MHz Buck Converter in a 3 mm SON Package

Part	Supplier Device Package	Output Type	Synchronous Rectifier	Voltage - Output (Min/Fixed)	Function	Package / Case	Topology	Output Configuration	Voltage - Input (Max) [Max]	Frequency - Switching	Voltage - Output (Max) [Max]	Mounting Type	Operating Temperature [Min]	Operating Temperature [Max]	Voltage - Input (Min) [Min]	Current - Output	Number of Outputs
Texas Instruments TPS40222DRPR	6-VSON	Adjustable		0.8 V	Step-Down	6-VDFN Exposed Pad	Buck	Positive	8 V	1.25 MHz	7.2 V	Surface Mount	-40 °C	125 °C	4.5 V	1.6 A	1
Texas Instruments TPS40222DRPT	6-VSON	Adjustable		0.8 V	Step-Down	6-VDFN Exposed Pad	Buck	Positive	8 V	1.25 MHz	7.2 V	Surface Mount	-40 °C	125 °C	4.5 V	1.6 A	1

Catalog

1.6A, 1.25-MHz Buck Converter in a 3 mm SON Package

Key Features

• Input Voltage Range 4.5 VDCto 8 VDCOutput Voltage (0.8 V to 90% VIN)0 A to 1.6 A Current CapabilityFixed 1.25-MHz Switching FrequencyReference 0.8 V ±1%Internal 250 mN-Channel MOSFET SwitchCurrent Mode Control with Internal Slope CompensationInternal Soft-StartInternal Loop CompensationShort Circuit ProtectionThermal ShutdownHigh Efficiency Up to 92%Small 3 mm × 3 mm SON PackageAPPLICATIONSDisk DrivesSet Top BoxPoint of Load PowerASIC Power SuppliesInput Voltage Range 4.5 VDCto 8 VDCOutput Voltage (0.8 V to 90% VIN)0 A to 1.6 A Current CapabilityFixed 1.25-MHz Switching FrequencyReference 0.8 V ±1%Internal 250 mN-Channel MOSFET SwitchCurrent Mode Control with Internal Slope CompensationInternal Soft-StartInternal Loop CompensationShort Circuit ProtectionThermal ShutdownHigh Efficiency Up to 92%Small 3 mm × 3 mm SON PackageAPPLICATIONSDisk DrivesSet Top BoxPoint of Load PowerASIC Power Supplies

Description

The TPS40222 is a fixed-frequency, current-mode, non-synchronous buck converter optimized for applications powered by a 5-V distributed source. With internally determined operating frequency, soft-start time, and control loop compensation, the TPS40222 provides many features with a minimum of external components. The TPS40222 operates at 1.25 MHz and supports up to 1.6-A output loads. The output voltage can be programmed to as low as 0.8 V. The TPS40222 utilizes pulse-by-pulse current limit as well as frequency foldback to protect the converter during a catastrophic short circuited output condition. The TPS40222 is a fixed-frequency, current-mode, non-synchronous buck converter optimized for applications powered by a 5-V distributed source. With internally determined operating frequency, soft-start time, and control loop compensation, the TPS40222 provides many features with a minimum of external components. The TPS40222 operates at 1.25 MHz and supports up to 1.6-A output loads. The output voltage can be programmed to as low as 0.8 V. The TPS40222 utilizes pulse-by-pulse current limit as well as frequency foldback to protect the converter during a catastrophic short circuited output condition.