Startseite Energiemanagement USB Versorgungsschalter & Ladesteuerung

TPS2056A

AKTIV

2-Kanal-USB-Leistungsschalter, 0,25 A Laden, 2,7-5,5 V, 80 mΩ, Active-High

Produktdetails

Product type Fixed current limit, Power switch Vin (min) (V) 2.7 Vin (max) (V) 5.5 Continuous current (max) (A) 0.25 Current limit (A) 0.5 Operating temperature range (°C) 0 to 125 Enable Active High Number of switches 2 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) 0.25 Current limit (A) 0.5 Operating temperature range (°C) 0 to 125 Enable Active High Number of switches 2 Current limit accuracy at 1 A 0.5 Rating Catalog
SOIC (D) 8 29.4 mm² 4.9 x 6
  • 80-m High-Side MOSFET Switch
  • 250 mA Continuous Current Per Channel
  • Independent Thermal and Short-Circuit Protection With Overcurrent Logic Output
  • Operating Range: 2.7-V to 5.5-V
  • CMOS- and TTL-Compatible Enable Inputs
  • 2.5-ms Typical Rise Time
  • Undervoltage Lockout
  • 10 µA Maximum Standby Supply Current for Single and Dual (20 µA for Triple and Quad)
  • Bidirectional Switch
  • Ambient Temperature Range, 0°C to 85°C
  • ESD Protection

  • 80-m High-Side MOSFET Switch
  • 250 mA Continuous Current Per Channel
  • Independent Thermal and Short-Circuit Protection With Overcurrent Logic Output
  • Operating Range: 2.7-V to 5.5-V
  • CMOS- and TTL-Compatible Enable Inputs
  • 2.5-ms Typical Rise Time
  • Undervoltage Lockout
  • 10 µA Maximum Standby Supply Current for Single and Dual (20 µA for Triple and Quad)
  • Bidirectional Switch
  • Ambient Temperature Range, 0°C to 85°C
  • ESD Protection

The TPS2045A through TPS2048A and TPS2055A through TPS2058A power-distribution switches are intended for applications where heavy capacitive loads and short circuits are likely to be encountered.

These devices incorporate 80-m N-channel MOSFET high-side power switches for power-distribution systems that require multiple power switches in a single package. Each switch is controlled by an independent 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, these devices limit 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 the switch remains off until valid input voltage is present. These power-distribution switches are designed to current limit at 0.5 A.

The TPS2045A through TPS2048A and TPS2055A through TPS2058A power-distribution switches are intended for applications where heavy capacitive loads and short circuits are likely to be encountered.

These devices incorporate 80-m N-channel MOSFET high-side power switches for power-distribution systems that require multiple power switches in a single package. Each switch is controlled by an independent 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, these devices limit 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 the switch remains off until valid input voltage is present. These power-distribution switches are designed to current limit at 0.5 A.

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TPS2553D AKTIV Einstellbar von 0,075 – 1,7 A ILIMIT 2,5 - 6,5 V, 85-mΩ -USB-Leistungsschalter, Active-High This product offers similar functionality with single-channel adjustable current limit.

Technische Dokumentation

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Typ Titel Datum
* Data sheet Current Limited Power-Distribution Switches datasheet (Rev. C) 15 Jan 2008
EVM User's guide Two-Channel, Power-Distribution Switch EVM (Rev. A) 01 Jun 2012

Design und Entwicklung

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