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Updated at 17/06/2025 10:30:15(UTC+8)

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Description

The TPS2105DBVT is a dual-input single-output Power Switch designed to provide uninterrupted output voltage when transitioning between two independent power supplies. Both devices combine one n-channel (250m) MOSFET with a single output. The p-channel MOSFET (IN2) is used with auxiliary power supplies that deliver lower current for standby modes. The n-channel MOSFET (IN1) is used with a main power supply that delivers higher current required for normal operation. Low on-resistance makes the n-channel the ideal path for higher main supply current when power-supply regulation and system voltage drops are critical. When using the p-channel MOSFET, quiescent current is reduced to 0.75µA to decrease the demand on the standby power supply. The MOSFETs in the TPS2105 do not have the parasitic diodes, typically found in discrete MOSFETs, thereby preventing back-flow current when the switch is off.
Advanced switch control logic
CMOS and TTL compatible enable input
Controlled rise, fall and transition times

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TPS2105DBVT Specifications

Attribute	Attribute Value

Datasheet	Datasheet
3D Model	3D Model
Mounting Style	Surface Mount
Number of Pins	5 Pin
Case/Package	SOT-23-5
Supply Voltage (DC)	5.50V (max)
Number of Outputs	1 Output
Input Voltage (DC)	5.50 V
Output Current	0.5 A
Supply Current	18 µA
Number of Positions	5 Position
Power Dissipation	309 mW
Input Voltage (Max)	5.5 V
Input Voltage (Min)	2.7 V
Output Current (Max)	500mA, 100mA
Number of Inputs	2 Input
Operating Temperature (Max)	125 ℃
Operating Temperature (Min)	-40 ℃
Power Dissipation (Max)	309 mW
Supply Voltage	2.7V ~ 5.5V
Input Voltage	5.5 V
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Size-Length	2.9 mm
Size-Width	1.6 mm
Size-Height	1.15 mm
Operating Temperature	-40℃ ~ 85℃
Product Lifecycle Status	Active
Packaging	Each
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance Edition	2015/06/15
ECCN Code	EAR99

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