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TPS22810 Datasheet(PDF) 12 Page - Texas Instruments

Part # TPS22810
Description  2.7-18-V, On-Resistance Load Switch With Thermal Protection
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPS22810 Datasheet(HTML) 12 Page - Texas Instruments

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TPS22810
SLVSDH0B – DECEMBER 2016 – REVISED MAY 2017
www.ti.com
Product Folder Links: TPS22810
Submit Documentation Feedback
Copyright © 2016–2017, Texas Instruments Incorporated
9 Detailed Description
9.1 Overview
The TPS22810 is a 6-pin, 2.7-18-V load switch with thermal protection in two separate package options. To
reduce voltage drop for low voltage and high current rails, the device implements a low resistance N-channel
MOSFET which reduces the drop out voltage across the device.
The device starts its operation by monitoring the VIN bus. When VIN exceeds the undervoltage-lockout threshold
(VUVR), the device samples the EN/UVLO pin. A high level on this pin enables the internal MOSFET. As VIN
rises, the internal MOSFET of the device starts conducting and allow current to flow from VIN to VOUT. When
EN/UVLO is held low (below VENF), internal MOSFET is turned off.
A voltage V(EN/UVLO) < V(ENF) on this pin turns off the internal FET, thus disconnecting VIN from VOUT, while
voltage below V(SHUTF) takes the device into shutdown mode, with IQ less than 1 μA to ensure minimal power
loss.
The device has a configurable slew rate which helps reduce or eliminate power supply droop because of large
inrush currents. The device also features an internal RPD resistor, which discharges VOUT once the switch is
disabled.
During shutdown, the device has very low leakage currents, thereby reducing unnecessary leakages for
downstream modules during standby. Integrated control logic, driver, charge pump, and output discharge FET
eliminates the need for any external components which reduces solution size and bill of materials (BOM) count.
The device also features a QOD pin, which allows the configuration of the discharge rate of VOUT once the
switch is disabled.
The device has a thermal protection feature. Due to this device protects itself against thermal damage due to
over-temperature and over-current conditions. Safe Operating Area (SoA) requirements are thus inherently met
without any special design consideration by the board designer.


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