Hot-selling TPS22945DCKR Low-input-voltage Current-limited Load Switches With Shut Off And Auto- Restart Feature SC70-5

Product Descriptions

The TPS2294x load switches provide protection to systems and loads in high-current conditions. The devices contain a 400-mΩ 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 TPS2294x includes thermal shutdown protection that prevents damage to the device when a continuous over-current condition causes excessive heating by turning off the switch.

When the switch current reaches the maximum limit, the TPS22941/2/3/4/5 operates in a constant-current mode to prohibit excessive currents from causing damage. TPS22941/3 has a current limit of 40 mA and TPS22942/4/5 has a current limit of 100 mA.

For the TPS22941/2/5, if the constant current condition still persists after 10ms, these parts shut off the switch and pull the fault signal pin (OC) low. The TPS22941/2/5, have an auto-restart feature that turns the switch on again after 80 ms if the ON pin is still active. A current limit condition on the TPS22943 and on the TPS22944 immediately pull the fault signal pin low (OC pin) and the part remains in the constant-current mode until the switch current falls below the current limit.

The TPS2294x is available in a SC70-5 (DCK) package. It is characterized for operation over the free-air temperature range of –40°C to 85°C.

Product Features

• Input Voltage Range: 1.62 V to 5.5 V

• Low ON resistance

– rON = 0.4 Ω at VIN = 5.5 V

– rON = 0.5 Ω at VIN = 3.3 V

– rON = 0.6 Ω at VIN = 2.5 V

– rON = 0.8 Ω at VIN = 1.8 V

• Minimum Current Limit: 40 mA or 100 mA

• Undervoltage Lockout

• 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

Product Applications

• Low-Current Sensor Protection

• HDMI Connector Protection

• Notebooks

• PDAs

• GPS Devices

• MP3 Players

• Peripheral Ports

Product Specification

Product Photos

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