Texas Instruments High-Side Power Distribution Switch 5.5V 1A SOT-23-5

The Texas Instruments Single Current Limited Power Distribution Switch is engineered for applications where heavy capacitive loads and short-circuits are likely to be encountered. This advanced device incorporates a 70mΩ N-channel MOSFET power switch, making it an ideal choice for power-distribution systems that require multiple power switches. Each switch is controlled by a logic enable input, providing precise operational control.

Gate drive is supplied by an internal charge pump, designed to control the power-switch rise and fall times to minimise current surges during switching, and it requires no external components. In the event of an output load exceeding the current-limit threshold or a short circuit, the device limits the output current to a safe level by switching into a constant-current mode, pulling the over-current logic output low. Furthermore, if continuous heavy overloads or short-circuits increase power dissipation and cause the junction temperature to rise, a thermal protection circuit shuts off the switch to prevent damage.

Key Features

• 70mΩ High-side MOSFET
• 500mA Continuous current
• Thermal and short-circuit protection
• Accurate current limit (0.75A minimum, 1.25A maximum)
• 2.7V to 5.5V Operating range
• 0.6ms Typical rise time
• Under-voltage lockout
• Deglitched fault report (OC)
• No OC glitch during power up
• 1µA Maximum standby supply current
• Green product and no Sb/Br