TPS22942

5.5V，0.2A，400mΩ，100mA 限流低电平有效负载开关

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.

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Input Voltage Range: 1.62 V to 5.5 V

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Low ON resistance

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rON = 0.4 Ω at VIN = 5.5 V

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rON = 0.5 Ω at VIN = 3.3 V

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rON = 0.6 Ω at VIN = 2.5 V

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rON = 0.8 Ω at VIN = 1.8 V

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Minimum Current Limit: 40 mA or 100 mA

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Undervoltage Lockout UVLO

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Thermal Shutdown

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Shutdown Current < 1 µA

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Fast Current Limit Response Time

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Fault Blanking

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Auto Restart

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1.8-V Compatible Control Input Thresholds

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ESD Performance Tested Per JESD 22

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4000-V Human-Body Model

A114-B, Class II

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1000-V Charged-Device Model C101

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Tiny SC-70 DCK Package

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UL Recognized Component UL File 169910

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Evaluated to IEC 60950-1, Ed 2, Am1, Annex CC,

Test Program 2 with CB Report