Product
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TPS2051C
  • TPS2051C
  • TPS2051C

TPS2051C

ACTIVE

0.5A loading, 4.5-5.5V, 97mΩ USB power switch, active-high, output discharge, reverse blocking

Texas Instruments TPS2051C Product Info

1 April 2026 4

Parameters

Product type

Fixed current limit, Power switch

Rating

Catalog

Continuous current (max) (A)

0.5

Current limit (A)

0.85

Number of switches

1

Enable

Active High

Vin (max) (V)

5.5

Vin (min) (V)

4.5

Operating temperature range (°C)

-40 to 125

Current limit accuracy at 1 A

0.2

Package

SOT-23 (DBV)-5-8.12 mm² 2.9 x 2.8

Features

  • Single Power Switch Family
  • Pin-for-Pin With Existing TI Switch Portfolio
  • Rated Currents of 0.5 A, 1 A, 1.5 A, 2 A
  • ±20% Accurate, Fixed, Constant Current Limit
  • Fast Overcurrent Response: 2 µs
  • Deglitched Fault Reporting
  • Selected Parts With (TPS20xxC) and Without
    (TPS20xxC-2) Output Discharge
  • Reverse Current Blocking
  • Built-In Soft Start
  • Ambient Temperature Range: –40°C to 85°C
  • UL Listed and CB-File No. E169910
  • Single Power Switch Family
  • Pin-for-Pin With Existing TI Switch Portfolio
  • Rated Currents of 0.5 A, 1 A, 1.5 A, 2 A
  • ±20% Accurate, Fixed, Constant Current Limit
  • Fast Overcurrent Response: 2 µs
  • Deglitched Fault Reporting
  • Selected Parts With (TPS20xxC) and Without
    (TPS20xxC-2) Output Discharge
  • Reverse Current Blocking
  • Built-In Soft Start
  • Ambient Temperature Range: –40°C to 85°C
  • UL Listed and CB-File No. E169910

Description

The TPS20xxC and TPS20xxC-2 power-distribution switch family is intended for applications, such as USB, where heavy capacitive loads and short circuits are likely to be encountered. This family offers multiple devices with fixed current-limit thresholds for applications from 0.5 A to 2 A.

The TPS20xxC and TPS20xxC-2 family limits the output current to a safe level by operating in a constant-current mode when the output load exceeds the current limit threshold. This provides a predictable fault current under all conditions. The fast overload response time eases the burden on the main 5-V supply to provide regulated power when the output is shorted. The power-switch rise and fall times are controlled to minimize current surges during turnon and turnoff.

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