Product details


Vin (Min) (V) 2.7 Vin (Max) (V) 5.5 Continuous current (Max) (A) 0.5 Current limit (A) 0.9 Product type Fixed current limit, Power switch Operating temperature range (C) -40 to 85 Enable Active High Number of switches 2 Rating Catalog open-in-new Find other USB power switches & charging port controllers

Package | Pins | Size

SOIC (D) 8 19 mm² 3.91 x 4.9 open-in-new Find other USB power switches & charging port controllers


  • 135-m -Maximum (5-V Input) High-Side MOSFET Switch
  • 500 mA Continuous Current per Channel
  • Short-Circuit Protection
  • Independent Thermal Protection
  • Overcurrent Logic Output
  • Operating Range...2.7-V to 5.5-V
  • Logic-Level Enable Input
  • 2.5-ms Typical Rise Time
  • Undervoltage Lockout
  • 10 uA Maximum Standby Supply Current
  • Bidirectional Switch
  • Available in 8-pin SOIC and PDIP Packages
  • Ambient Temperature Range, -40°C to 85°C
  • 2-kV Human-Body-Model, 200-V Machine-Model ESD Protection
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The TPS2042 and TPS2052 dual power distribution switches are intended for applications where heavy capacitive loads and short circuits are likely to be encountered. Both the TPS2042 and the TPS2052 incorporate in a single package two 135-m N-channel MOSFET high-side power switches for power distribution systems that require multiple power switches. Each switch is controlled by a logic enable that is compatible with 5-V logic and 3-V logic. Gate drive is provided by an internal charge pump designed to control the power-switch rise times and fall times to minimize current surges during switching. The charge pump requires no external components and allows operation from supplies as low as 2.7 V.

When the output load exceeds the current-limit threshold or a short is present, the TPS2042 and TPS2052 limit the output current to a safe level by switching into a constant-current mode, pulling the overcurrent (OCx\) logic output low. When continuous heavy overloads and short circuits increase the power dissipation in the switch causing the junction temperature to rise, a thermal protection circuit shuts off the switch to prevent damage. Recovery from a thermal shutdown is automatic once the device has cooled sufficiently. Internal circuitry ensures the switch remains off until valid input voltage is present.

The TPS2042 and TPS2052 are designed to limit at 0.9-A load. These power distribution switches are available in 8-pin small-outline integrated circuit (SOIC) and 8-pin plastic dual-in-line packages (PDIP) and operate over an ambient temperature range of -40°C to 85°C.

The D package is available taped and reeled. Add an R suffix to device type (e.g., TPS2042DR)

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Technical documentation

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Type Title Date
* Data sheet Power-Distribution Switch datasheet (Rev. A) Oct. 15, 1998
Certificate US-36986-UL Certificate of Compliance IEC 62368-1 Mar. 12, 2021
User guide Two-Channel, Power-Distribution Switch EVM (Rev. A) Jun. 01, 2012
Application note TPS202x/3x And TPS204x/5x USB Power Distribution Oct. 16, 1998

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Reference designs

Secure IoT Gateway Reference Design for Bluetooth® Low Energy, Wi-Fi® and Sub-1 GHz Nodes
TIDM-TM4C129XGATEWAY — A system example demonstrating how to build a secure cloud-connected IoT gateway allowing access and control of the multiple wireless nodes.  The reference design utilizes the TM4C12x, TM4C123x, TRF7970A and RF430CL330H, as well as the SimpleLink™ Wi-Fi® CC3100, Bluetooth® low energy CC2650 and (...)
document-generic Schematic
Sub-1 GHz–Enabled IoT Node on High-Performance Microcontroller Reference Design
TIDM-TM4C123XSUB1GHZ — A system example to show how to build a Sub-1 GHz node by integrating a TM4C123x MCU and a SimpleLink™ CC1310 ultra-low-power wireless MCU. It demostatrates the capability of remotely controlling MCU operation via the web.
document-generic Schematic
Wi-Fi Enabled IoT Node with High Performance MCU Reference Design
TIDM-TM4C129XWIFI A system example to show how to build a Wi-Fi Node by integrating the TM4C1294 MCU from the TM4C product family and the CC3100 network processor. This reference design demonstrates the capability of remotely controlling MCU operation via the internet.
document-generic Schematic

CAD/CAE symbols

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SOIC (D) 8 View options

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