TPS22945DCKR TPS22945DCKR Ethernet Switch IC Power Distribution ULTRA-SM,LOW RON, 2A SGL CH LOAD SWITCH

TPS22945DCKR TPS22945DCKR Ethernet Switch IC Power Distribution ULTRA-SM,LOW RON, 2A SGL CH LOAD SWITCH

1 Features

• Input Voltage Range: 1.62 V to 5.5 V

• Low ON resistance

  • – rON =0.4ΩatVIN =5.5V

  • – rON =0.5ΩatVIN =3.3V

  • – rON =0.6ΩatVIN =2.5V

  • – rON =0.8ΩatVIN =1.8V

• Minimum Current Limit: 40 mA or 100 mA

• Undervoltage Lockout (UVLO)

• Thermal Shutdown

• Shutdown Current < 1 μA

• Fast Current Limit Response Time

• Fault Blanking

• Auto Restart

• 1.8-V Compatible Control Input Thresholds

• ESD Performance Tested Per JESD 22

  • – 4000-V Human-Body Model (A114-B, Class II)

  • – 1000-V Charged-Device Model (C101)

• Tiny SC-70 (DCK) Package

• UL Recognized Component (UL File 169910)

• Evaluated to IEC 60950-1, Ed 2, Am1, Annex CC, Test Program 2 with CB Report

2 Applications

• Low-Current Sensor Protection

• HDMI Connector Protection

• Notebooks

• PDAs

• GPS Devices

• MP3 Players

• Peripheral Ports

3 Description

The TPS22941/2/3/4/5 load switches provide protection to systems and loads in high-current conditions. The devices contain a 0.4-Ω current- limited P-channel MOSFET that can operate over an input voltage range of 1.62 V to 5.5 V. Current is prevented from flowing when the MOSFET is off. The switch is controlled by an on/off input (ON), which is capable of interfacing directly with low-voltage control signals. The TPS22941/2/3/4/5 includes thermal shutdown protection that prevents damage to the device when a continuous over-current condition causes excessive heating by turning off the switch.

These devices provide an integrated, robust solution to provide current limiting the output current to a safe level by switching into a constant-current mode when the ouptut load exceeds the current-limit threshold. The OC logic output asserts low during overcurrent, undervoltage, or overtemperature conditions. These additional features make the TPS22941/2/3/4/5 an ideal solution for applications where current limiting is necessary.

This family of devices are available in a SC70-5 (DCK) package. It is characterized for operation over the free-air temperature range of –40°C to 85°C.

Device Information