TPS2051

ACTIVE

0.5A loading, 0.9A ILIMIT, 2.7-5.5V, 80mΩ USB power switch, active-high

Product details

Product type Fixed current limit, Power switch Vin (min) (V) 2.7 Vin (max) (V) 5.5 Continuous current (max) (A) 0.5 Current limit (A) 0.9 Operating temperature range (°C) -40 to 125 Enable Active High Number of switches 1 Current limit accuracy at 1 A 0.22 Rating Catalog
Product type Fixed current limit, Power switch Vin (min) (V) 2.7 Vin (max) (V) 5.5 Continuous current (max) (A) 0.5 Current limit (A) 0.9 Operating temperature range (°C) -40 to 125 Enable Active High Number of switches 1 Current limit accuracy at 1 A 0.22 Rating Catalog
SOIC (D) 8 29.4 mm² 4.9 x 6
  • 135-m -Maximum (5-V Input) High-Side MOSFET Switch
  • 500 mA Continuous Current
  • Short-Circuit and 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
  • 135-m -Maximum (5-V Input) High-Side MOSFET Switch
  • 500 mA Continuous Current
  • Short-Circuit and 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

The TPS2041 and TPS2051 power distribution switches are intended for applications where heavy capacitive loads and short circuits are likely to be encountered. The TPS2041 and the TPS2051 are 135-m N-channel MOSFET high-side 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 TPS2041 and TPS2051 limit the output current to a safe level by switching into a constant-current mode, pulling the overcurrent (OC\) 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 TPS2041 and TPS2051 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., TPS2041DR)

The TPS2041 and TPS2051 power distribution switches are intended for applications where heavy capacitive loads and short circuits are likely to be encountered. The TPS2041 and the TPS2051 are 135-m N-channel MOSFET high-side 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 TPS2041 and TPS2051 limit the output current to a safe level by switching into a constant-current mode, pulling the overcurrent (OC\) 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 TPS2041 and TPS2051 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., TPS2041DR)

Download View video with transcript Video

Similar products you might be interested in

open-in-new Compare alternates
Same functionality with different pin-out to the compared device
TPS2051B ACTIVE 0.5A loading, 2.7-5.5V, 70mΩ USB power switch, active-high This product offers same functionality with output discharge, reverse blocking and lower 1 ku price.

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 4
Type Title Date
* Data sheet TPS2041, TPS2051 - Power-Distribution Switches datasheet (Rev. A) 14 Oct 1998
Certificate US-36986-UL Certificate of Compliance IEC 62368-1 12 Mar 2021
Technical article How to design an infrared thermometer quickly PDF | HTML 07 Apr 2020
Application note TPS202x/3x And TPS204x/5x USB Power Distribution 16 Oct 1998

Design & development

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

Reference designs

TIDA-00226 — 32-bit ARM® Cortex™-M4F MCU based Small form factor Serial-to-Ethernet Converter

Serial communications have been widely used in grid infrastructure equipments. But the limitation of transmission distance and bandwidth of serial communication leads to demand for a more flexible and high-speed method to meet modern smart grid network migration. Ethernet has been accepted as an (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDM-TM4C129CAMERA — Camera Reference Design for ARM® Cortex®-M Microcontrollers (MCUs)

This design implements a network camera with a QVGA display panel and an embedded web server for remote monitoring.  With a memory footrpint of 250KB for the web server, there is ample memory available on the TM4C129x microcontroller for additional customizations.
Design guide: PDF
Schematic: PDF
Reference designs

CC2531EM-IOT-HOME-GATEWAY-RD — ZigBee Home Automation Gateway reference design

A gateway is a bridge that connects wireless devices to the Internet. This Linux-based Home Automation Gateway enables remote monitoring and control of ZigBee® powered nodes and devices inside the home. This gateway reference design includes ZigBee Home Automation (HA 1.2) certified software (...)
Test report: PDF
Schematic: PDF
Reference designs

TIDM-CONNECTED-ETHERNET — Connected Ethernet, USB, and LCD Reference Design

This reference design will demonstrate several Ethernet- and LCD-enabled applications such as remote sensor monitoring, Ethernet configuration via web-based and LCD dashboards and aware applications that interface with weather websites.
Design guide: PDF
Schematic: PDF
Package Pins Download
SOIC (D) 8 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos