TPS2121 Series

2.7-V to 22-V, 56-mΩ, 4.5-A, power mux with seamless switchover

Link to Manufacturer Page: https://www.ti.com/

Catalog

2.7-V to 22-V, 56-mΩ, 4.5-A, power mux with seamless switchover

Part	Voltage - Supply [Min]	Voltage - Supply [Max]	Current - Output (Max) [Max]	Type	Supplier Device Package [x]	Supplier Device Package [y]	Supplier Device Package	Mounting Type	Package / Case	Operating Temperature [Max]	Operating Temperature [Min]	Ratio - Input:Output [custom]	FET Type	Applications	Function	Secondary Attributes	Supplied Contents
Texas Instruments TPS2121RUXR	2.8 V	22 V	4.5 A	Source Selector Switch	2	2.5	12-VQFN-HR	Surface Mount	12-VFQFN	125 ¯C	-40 °C	2:1	N-Channel	General Purpose
Texas Instruments TPS2121RUXT	2.8 V	22 V	4.5 A	Source Selector Switch	2	2.5	12-VQFN-HR	Surface Mount	12-VFQFN	125 ¯C	-40 °C	2:1	N-Channel	General Purpose
Texas Instruments TPS2121EVM-023				Power Management											Power Distribution Switch (Load Switch)	On-Board Test Points	Board(s)

Key Features

• Wide operating range: 2.8 V to 22 VAbsolute maximum input voltage of 24 VLow RON resistance:TPS2120: 62 mΩ (typical)TPS2121: 56 mΩ (typical)Adjustable overvoltage supervisor (OVx):Accuracy < ±5%Adjustable priority supervisor (PR1):Accuracy < ±5%TPS2121 Supports external voltage reference (CP2) with an accuracy of <1%Output current limit (ILM):TPS2120: 1 A – 3 ATPS2121: 1 A – 4.5 AChannel status indication (ST)Adjustable input settling time (SS)Adjustable output soft start time (SS)TPS2121 Fast output switchover (tSW): 5 µs (typical)Low Iq from enabled input: 200 µA (typical)Low Iq from disabled input: 10 µA (Typical)Manual input source selection (OVx)Over temperature protection (OTP)Wide operating range: 2.8 V to 22 VAbsolute maximum input voltage of 24 VLow RON resistance:TPS2120: 62 mΩ (typical)TPS2121: 56 mΩ (typical)Adjustable overvoltage supervisor (OVx):Accuracy < ±5%Adjustable priority supervisor (PR1):Accuracy < ±5%TPS2121 Supports external voltage reference (CP2) with an accuracy of <1%Output current limit (ILM):TPS2120: 1 A – 3 ATPS2121: 1 A – 4.5 AChannel status indication (ST)Adjustable input settling time (SS)Adjustable output soft start time (SS)TPS2121 Fast output switchover (tSW): 5 µs (typical)Low Iq from enabled input: 200 µA (typical)Low Iq from disabled input: 10 µA (Typical)Manual input source selection (OVx)Over temperature protection (OTP)

Description

The TPS212x devices are Dual-Input, Single-Output (DISO) Power Multiplexer (MUX) that are well suited for a variety of systems having multiple power sources. The devices will Automatically Detect, Select, and Seamlessly Transition between available inputs. Priority can be automatically given to the highest input voltage or manually assigned to a lower voltage input to support both ORing and Source Selection operations. A priority voltage supervisor is used to select an input source. An Ideal Diode operation is used to seamlessly transition between input sources. During switchover, the voltage drop is controlled to block reverse current before it happens and provide uninterrupted power to the load with minimal hold-up capacitance. Current limiting is used during startup and switchover to protect against overcurrent events, and also protects the device during normal operation. The output current limit can be adjusted with a single external resistor. The TPS212x devices are available in WCSP and small VQFN-HR package options characterized for operation for a temperature range of –40°C to 125°C. The TPS212x devices are Dual-Input, Single-Output (DISO) Power Multiplexer (MUX) that are well suited for a variety of systems having multiple power sources. The devices will Automatically Detect, Select, and Seamlessly Transition between available inputs. Priority can be automatically given to the highest input voltage or manually assigned to a lower voltage input to support both ORing and Source Selection operations. A priority voltage supervisor is used to select an input source. An Ideal Diode operation is used to seamlessly transition between input sources. During switchover, the voltage drop is controlled to block reverse current before it happens and provide uninterrupted power to the load with minimal hold-up capacitance. Current limiting is used during startup and switchover to protect against overcurrent events, and also protects the device during normal operation. The output current limit can be adjusted with a single external resistor. The TPS212x devices are available in WCSP and small VQFN-HR package options characterized for operation for a temperature range of –40°C to 125°C.