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Product details

Parameters

Vin (Min) (V) 2.7 Vin (Max) (V) 5.5 Continuous current (Max) (A) 0.25 Current limit (A) 0.5 Enable Active Low Number of switches 4 Rating Catalog open-in-new Find other USB power switches & charging port controllers

Package | Pins | Size

SOIC (D) 16 59 mm² 9.9 x 6 open-in-new Find other USB power switches & charging port controllers

Features

  • 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

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Description

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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Technical documentation

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No results found. Please clear your search and try again. View all 6
Type Title Date
* Datasheet Current Limited Power-Distribution Switches datasheet (Rev. C) Jan. 15, 2008
Technical articles A New Understanding: Blast Motion redefines movement, tracking and training for athletes. Aug. 06, 2014
Technical articles Improving Fly-Buck Regulation Using Opto (Part-1) Jul. 15, 2014
Technical articles Altium and WEBENCH – together at last Jul. 12, 2014
Technical articles Using telemetry in point-of-load applications Jun. 24, 2014
User guides Four-Channel, Power-Distribution Switch EVM Mar. 07, 2007

Design & development

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

CAD/CAE symbols

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SOIC (D) 16 View options

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