DESCRIPTION

· The RS31211/212/309/311 devices are active circuit protection devices with an integrated MOSFET used to limit current and voltage to safe levels during fault conditions.

· The current limit level can be set with a resistor between ILM and ground, and the typical current limit accuracy is ±7.5%.

· The device has over voltage protection feature which limits the output voltage to a fixed level when over voltage fault occurs.

· To limit the inrush current during device turn-on, the rising slew rate of output voltage can be set by a capacitor between dVdt and ground.

· The device also offers EN on/off control and input UVLO features.

· The device is available in WSON 8 pins, 2x2 mm package.

FEATURES

· RS31211 - 3.3V eFuse, RS31212 - 5V eFuse, RS31309 – 2.97V to 18V input, RS31311 - 12V eFuse.

· Integrated 34mΩ Pass MOSFET.

· Adjustable 0.5A to 4A current limit.

· Adjustable output slew rate.

· Enable with adjustable input UVLO threshold.

· Fixed over-voltage clamp: 3.8V for RS31211, 5.7V for RS31212 and 13.7V for RS31311.

· Built-in over temperature protection.

· UL 2367 Recognized.

· Safe during single point failure test (IEC 62368-1).

· Small 2x2mm WSON package.

· RoHS compliant and Green.

APPLICATIONS

· Hot-swap, hot-plug.

· PCI and PCIe cards.

· Adapter powered devices.

· HDD and SSD drivers.

· Industrial system.