TPS2061, TPS2062, TPS2063

TPS2065, TPS2066, TPS2067

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SLVS490I – DECEMBER 2003 – REVISED OCTOBER 2009

Current Sense

A sense FET monitors the current supplied to the load. The sense FET measures current more efficiently than

conventional resistance methods. When an overload or short circuit is encountered, the current-sense circuitry

sends a control signal to the driver. The driver in turn reduces the gate voltage and drives the power FET into its

saturation region, which switches the output into a constant-current mode and holds the current constant while

varying the voltage on the load.

Thermal Sense

The TPS206x implements a thermal sensing to monitor the operating temperature of the power distribution

switch. In an overcurrent or short-circuit condition the junction temperature rises. When the die temperature rises

to approximately 140°C due to overcurrent conditions, the internal thermal sense circuitry turns off the switch,

thus preventing the device from damage. Hysteresis is built into the thermal sense, and after the device has

cooled approximately 10 degrees, the switch turns back on. The switch continues to cycle off and on until the

fault is removed. The open-drain false reporting output (OCx) is asserted (active low) when an overtemperature

shutdown or overcurrent occurs.

Undervoltage Lockout

A voltage sense circuit monitors the input voltage. When the input voltage is below approximately 2 V, a control

signal turns off the power switch.

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REVISION HISTORY

Changes from Original (December 2003) to Revision A

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Added devices to the data sheet- TPS2063, TPS2065, TPS2066, TPS2067 ...................................................................... 1

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Added the General Switch Catalog ....................................................................................................................................... 1

Changes from Revision A (July 2004) to Revision B

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Changed Features Bullet From: UL Pending To: UL Listed - File No. E169910 .................................................................. 1

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Changed Electrical Characteristics - CURRENT LIMIT information. .................................................................................... 4

Changes from Revision C (January 2006) to Revision D

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Changed ORDERING INFORMATION table ........................................................................................................................ 2

Changes from Revision D (Februaty 2007) to Revision E

Page

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Changed General Switch Catalog information. ..................................................................................................................... 1

Changes from Revision E (September 2007) to Revision F

Page

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Added the DBV-5 package. .................................................................................................................................................. 1

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Added the DBV-5 package option. ....................................................................................................................................... 1

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Added the DBV-5 package option to the Dissipation Ratings table. .................................................................................... 3

•

Changed Thermal Sense paragraph: From: Once the die temperature rises to approximately 140°C To: Once the

die temperature rises above a minimum of 135°C ............................................................................................................. 17

Copyright © 2003–2009, Texas Instruments Incorporated

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Product Folder Link(s): TPS2061 TPS2062 TPS2063 TPS2065 TPS2066 TPS2067