Product details


Vin (Min) (V) 2.5 Vin (Max) (V) 6.5 Continuous current (Max) (A) 1.5 Current limit (A) 0.075 to 1.7 Product type Adjustable current limit, Power switch Operating temperature range (C) -40 to 125 Enable Active High Number of switches 1 TI functional safety category Functional Safety-Capable Rating Automotive open-in-new Find other USB power switches & charging port controllers

Package | Pins | Size

SOT-23 (DBV) 6 5 mm² 2.9 x 1.6 open-in-new Find other USB power switches & charging port controllers


  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C3B
  • Up to 1.5-A Maximum Load Current
  • ±6% Current-Limit Accuracy at 1.7 A (Typical)
  • Meets Universal Serial Bus (USB) Current-Limiting Requirements
  • Backwards Compatible With TPS2550/51 and TPS2551-Q1
  • Adjustable Current-Limit, 75 mA–1300 mA (Typical)
  • Constant-Current Version
  • Fast Overcurrent Response - 2-µs (Typical)
  • 85-mΩ High-Side MOSFET
  • Reverse Input-Output Voltage Protection
  • Operating Range: 2.5 V to 6.5 V
  • Built-in Soft-Start
  • 15 kV ESD Protection per IEC 61000-4-2 (With External Capacitance)
  • See the TI Switch Portfolio
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The TPS2553-Q1 power-distribution switch is intended for applications where precision current limiting is required or heavy capacitive loads and short circuits are encountered. It provides up to 1.5 A of continuous load current. This device offers a programmable current-limit threshold between 75 mA and 1.7 A (typical) via an external resistor. Current-limit accuracy as tight as ±6% can be achieved at the higher current-limit settings. The power-switch rise and fall times are controlled to minimize current surges during turn on and off.

The TPS2553-Q1 device limits the output current to a safe level by using a constant-current mode when the output load exceeds the current-limit threshold. An internal reverse-voltage comparator disables the power switch when the output voltage is driven higher than the input to protect devices on the input side of the switch. The FAULT output asserts low during overcurrent and reverse-voltage conditions.

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Technical documentation

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Type Title Date
* Data sheet TPS2553-Q1 Precision Adjustable Current-Limited Power-Distribution Switches datasheet (Rev. B) Apr. 29, 2020
Functional safety information TPS2553-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA Mar. 09, 2021
User guide TPS2553Q1EVM (HVL125A) Precision Current Limiting Switch User Guide Jul. 07, 2016
User guide Power-Distribution Switch with Adjustable Current-Limit EVM Oct. 08, 2008

Design & development

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Hardware development

document-generic User guide

The TPS2552/3DBVEVM and TPS2552/3DRVEVM are evaluation modules (EVM) for Texas Instruments’family of power-distribution switches with adjustable current-limit. These EVMs operate over a 2.5 V to 6.5 V range. An onboard jumper sets the output current-limit to either 0.5 A or (...)

document-generic User guide
The TPS2553-Q1 is an adjustable precision power distribution switch with short circuit current limiting. The device can provide up to 1.5A of contiuous load current, and has a pregrammable short circuit current limit between 75 mA and 1.7A. In addition to current limiting, the device also has (...)
  • Major pins of device broken out into onboard testpoints
  • Onboard jumpers for easily adjustable RILIM to change the short-circuit current-limit
  • Onboard jumpers to excersis the auto-retry functionality of the device
  • Onboard switch for manual control of the enable pin
  • Q200 qualified passives in EVM solution (...)

Design tools & simulation

SLVM425B.ZIP (47 KB) - PSpice Model

Reference designs

ADAS Sensor Interconnect Reference Design Board for Remote Camera and Radar Modules
TIDA-00271 The ADAS Sensor Interconnect Board is intended for applications where remote sensors like cameras, LIDAR or radar modules need to be connected to a central processing ECU. The board supports up to 3 coaxial and 1 LVDS twisted pair data inputs as well as 3 FMC cable and 1 board to board connector as (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
SOT-23 (DBV) 6 View options

Ordering & quality

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Support & training

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