TPS64201 Series

1.8 to 6.5 V input, 450 kHz, 95% efficient step-down controller, 20 uA, SOT-23

Catalog

1.8 to 6.5 V input, 450 kHz, 95% efficient step-down controller, 20 uA, SOT-23

Part	Package / Case	Mounting Type	Control Features	Clock Sync	Output Configuration	Operating Temperature [Max]	Operating Temperature [Min]	Topology	Number of Outputs	Function	Output Phases	Synchronous Rectifier	Supplier Device Package	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Duty Cycle (Max) [Max]	Output Type
Texas Instruments TPS64201DBVRG4	SOT-23-6	Surface Mount	Enable		Positive or Negative	85 °C	-40 °C	Buck	1	Step-Down	1		SOT-23-6	1.8 V	6.5 V	100 %	Transistor Driver
Texas Instruments TPS64201DBVR	SOT-23-6	Surface Mount	Enable		Positive or Negative	85 °C	-40 °C	Buck	1	Step-Down	1		SOT-23-6	1.8 V	6.5 V	100 %	Transistor Driver

Catalog

1.8 to 6.5 V input, 450 kHz, 95% efficient step-down controller, 20 uA, SOT-23

Key Features

• Step-Down Controller for Applications With up to 95% Efficiency1.8-V to 6.5-V Operating Input Voltage RangeAdjustable Output Voltage Range From 1.2 V to VIHigh Efficiency Over a Wide Load Current Range100% Maximum Duty Cycle for Lowest DropoutInternal Softstart20-µA Quiescent Current (Typical)Overcurrent ProtectedAvailable in a SOT23 PackageAPPLICATIONSUSB Powered PeripheralsOrganizers, PDAs, and Handheld PCsLow Power DSP SupplyDigital CamerasHard Disk DrivesPortable Audio PlayersStep-Down Controller for Applications With up to 95% Efficiency1.8-V to 6.5-V Operating Input Voltage RangeAdjustable Output Voltage Range From 1.2 V to VIHigh Efficiency Over a Wide Load Current Range100% Maximum Duty Cycle for Lowest DropoutInternal Softstart20-µA Quiescent Current (Typical)Overcurrent ProtectedAvailable in a SOT23 PackageAPPLICATIONSUSB Powered PeripheralsOrganizers, PDAs, and Handheld PCsLow Power DSP SupplyDigital CamerasHard Disk DrivesPortable Audio Players

Description

The TPS6420x are nonsynchronous step-down controllers that are ideally suited for systems powered from a 5-V or 3.3-V bus or for applications powered from a 1-cell Li-Ion battery or from a 2- to 4-cell NiCd, NiMH, or alkaline battery. These step-down controllers drive an external P-channel MOSFET allowing design flexibility. To achieve highest efficiency over a wide load current range, this controller uses a minimum on time, minimum off time control scheme and consumes only 20-µA quiescent current. The minimum on time of typically 600 ns (TPS64203) allows the use of small inductors and capacitors. When disabled, the current consumption is reduced to less than 1 µA. The TPS6420x is available in the 6-pin SOT23 (DBV) package and operates over a free air temperature range of –40°C to 85°C. The TPS6420x are nonsynchronous step-down controllers that are ideally suited for systems powered from a 5-V or 3.3-V bus or for applications powered from a 1-cell Li-Ion battery or from a 2- to 4-cell NiCd, NiMH, or alkaline battery. These step-down controllers drive an external P-channel MOSFET allowing design flexibility. To achieve highest efficiency over a wide load current range, this controller uses a minimum on time, minimum off time control scheme and consumes only 20-µA quiescent current. The minimum on time of typically 600 ns (TPS64203) allows the use of small inductors and capacitors. When disabled, the current consumption is reduced to less than 1 µA. The TPS6420x is available in the 6-pin SOT23 (DBV) package and operates over a free air temperature range of –40°C to 85°C.