TPS2049

ACTIVE

0.1A loading, 2.7-5.5V, 400mΩ USB power switch, active-low

Product details

Product type Fixed current limit, Power switch Vin (min) (V) 2.7 Vin (max) (V) 5.5 Continuous current (max) (A) 0.15 Current limit (A) 0.15 Operating temperature range (°C) -40 to 125 Enable Active Low Number of switches 1 Current limit accuracy at 1 A 0.5 Rating Catalog
Product type Fixed current limit, Power switch Vin (min) (V) 2.7 Vin (max) (V) 5.5 Continuous current (max) (A) 0.15 Current limit (A) 0.15 Operating temperature range (°C) -40 to 125 Enable Active Low Number of switches 1 Current limit accuracy at 1 A 0.5 Rating Catalog
SOIC (D) 8 29.4 mm² 4.9 x 6
  • 100-mA Continuous Current
  • 600-m High-Side MOSFET
  • Thermal and Short-Circuit Protection
  • Operating Range: 2.7 V to 5.5 V
  • 0.6-ms Typical Rise Time
  • Undervoltage Lockout
  • Deglitched Fault Report (OC)
  • 43 µA Quiescent Supply Current
  • 1-µA Maximum Standby Supply Current
  • SOIC-8 Package
  • Ambient Temperature Range: -40°C to 85°C
  • 2 µS Response Time to Short Circuit

  • 100-mA Continuous Current
  • 600-m High-Side MOSFET
  • Thermal and Short-Circuit Protection
  • Operating Range: 2.7 V to 5.5 V
  • 0.6-ms Typical Rise Time
  • Undervoltage Lockout
  • Deglitched Fault Report (OC)
  • 43 µA Quiescent Supply Current
  • 1-µA Maximum Standby Supply Current
  • SOIC-8 Package
  • Ambient Temperature Range: -40°C to 85°C
  • 2 µS Response Time to Short Circuit

The TPS2049 power-distribution switch is intended for applications where heavy capacitive loads and short circuits are likely to be encountered. This device incorporates a 600-m N-channel MOSFET power switch for power-distribution systems that require only one power distribution path. The 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 2.7V.

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 (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. This power-distribution switch is designed to set current limit at 150mA typically.

The TPS2049 power-distribution switch is intended for applications where heavy capacitive loads and short circuits are likely to be encountered. This device incorporates a 600-m N-channel MOSFET power switch for power-distribution systems that require only one power distribution path. The 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 2.7V.

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 (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. This power-distribution switch is designed to set current limit at 150mA typically.

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Technical documentation

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Type Title Date
* Data sheet Single-Channel 100ma Power Switch datasheet (Rev. A) 31 Jul 2015
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Selection guide USB Type-A Power Switch and Charging Controller Selector Guide (Rev. F) 24 May 2018
EVM User's guide Single Channel Power-Distribution Switch EVM (Rev. B) 17 Dec 2007

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SOIC (D) 8 View options

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