TPS2051B-Q1

ACTIVE

Automotive 0.5A loading, 2.7-5.5V, 105mΩ 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) 1 Operating temperature range (°C) -40 to 125 Enable Active High Number of switches 1 TI functional safety category Functional Safety-Capable Current limit accuracy at 1 A 0.25 Rating Automotive
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) 1 Operating temperature range (°C) -40 to 125 Enable Active High Number of switches 1 TI functional safety category Functional Safety-Capable Current limit accuracy at 1 A 0.25 Rating Automotive
SOIC (D) 8 29.4 mm² 4.9 x 6
  • 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 2
    • Device CDM ESD classification level C6
    • Device MM ESD classification level M0
  • 105-mΩ high-side MOSFET
  • 500-mA continuous current
  • Thermal and short-circuit protection
  • Accurate current limit: 0.75 A (minimum), 1.25 A (maximum)
  • Operating range: 2.7 V to 5.5 V
  • 0.6-ms typical rise time
  • Undervoltage lockout
  • Deglitched fault report (OC)
  • No OC glitch during power up
  • Maximum standby supply current: 1 µA (single, dual) or 2 µA (triple, quad)
  • Bidirectional switch
  • UL recognized under file number E169910
  • 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 2
    • Device CDM ESD classification level C6
    • Device MM ESD classification level M0
  • 105-mΩ high-side MOSFET
  • 500-mA continuous current
  • Thermal and short-circuit protection
  • Accurate current limit: 0.75 A (minimum), 1.25 A (maximum)
  • Operating range: 2.7 V to 5.5 V
  • 0.6-ms typical rise time
  • Undervoltage lockout
  • Deglitched fault report (OC)
  • No OC glitch during power up
  • Maximum standby supply current: 1 µA (single, dual) or 2 µA (triple, quad)
  • Bidirectional switch
  • UL recognized under file number E169910

The TPS20xxB-Q1 power-distribution switches are intended for applications where heavy capacitive loads and short circuits are likely to be encountered. These devices incorporate 105-mΩ N-channel MOSFET power switches for power-distribution systems that require multiple power switches in a single package. Each switch is controlled by a logic enable input. 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 device limits 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 that the switch remains off until valid input voltage is present. This power-distribution switch is designed to set current limit at 1 A (typical).

The TPS20xxB-Q1 power-distribution switches are intended for applications where heavy capacitive loads and short circuits are likely to be encountered. These devices incorporate 105-mΩ N-channel MOSFET power switches for power-distribution systems that require multiple power switches in a single package. Each switch is controlled by a logic enable input. 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 device limits 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 that the switch remains off until valid input voltage is present. This power-distribution switch is designed to set current limit at 1 A (typical).

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Technical documentation

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Type Title Date
* Data sheet TPS20xxB-Q1 Current-Limited Power-Distribution Switches datasheet (Rev. D) PDF | HTML 09 Oct 2020
Functional safety information TPS2051B-Q1 Functional Safety FIT Rate and FMD PDF | HTML 10 Jun 2021

Design & development

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

Evaluation board

TPS2051BEVM — TPS2051B Evaluation Module

TheTPS2051BEVM provides a means for the user to evaluate quickly the functionality and electrical performance of the TPS2051B. All inputs and outputs are brought out to test points for control and monitoring. Allpassive components are included on the EVM for device operation. The input pin should (...)

User guide: PDF
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Simulation model

TPS2051B TINA-TI Transient Reference Design

SLVM517.TSC (649 KB) - TINA-TI Reference Design
Simulation model

TPS2051B TINA-TI Transient Spice Model

SLVM518.ZIP (36 KB) - TINA-TI Spice Model
Simulation model

TPS2051B Unencrypted PSpice Transient Model Package (Rev. A)

SLVM382A.ZIP (31 KB) - PSpice Model
Package Pins CAD symbols, footprints & 3D models
SOIC (D) 8 Ultra Librarian

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