The constant current TPS2552/53 and latch-off TPS2552-1/53-1 provide at least a 50 percent improvement in current limit accuracy compared to competing solutions. The TPS2552/3 devices limit the output current to a safe level by switching into a constant-current mode when the output load exceeds the current-limit threshold while the TPS2552-1/3-1 turns the switch off completely during over-current events. The enhanced accuracy of the TPS2552/53 also enables the device to be used as a simple circuit-breaking or current-limiting solution for a wide range of applications outside of consumer end equipment, including optical modules and low current management rails in telecommunications systems.
Key Features
+/-6% current-limit accuracy at 1.3 A.
Meets USB current-limiting requirements.
Adjustable current limit from 75 mA to 1,300 mA.
Constant current (TPS2552/3) and latch-off (TPS2552-1/3-1) versions.
Compatible with TPS2550/1.
Wide, 2.5-V to 6.5-V input range.
Fast 2-uS over-current response.
-40 degree C to 85 degree C operating temperature range.
Key Benefits
No need to over-design power supply for inaccurate switch.
Eases USB power implementation.
Single device used across platforms, with just a resistor change.
Fault behavior can be optimized for different designs.
Easy upgrade path from existing TPS2550/1 products.
Same product allows protection for 2.5-V, 3.3-V and 5-V rails.
Switch response fast enough to protect power supply.
Temperature range meets most commercial and industrial requirements.
Small package options save board space.
