MAX4840AEXT+T

The MAX4840AEXT+T is an overvoltage-protection controller with status FLAG in 6 pin SC-70 package. It is an overvoltage protection IC that protect low-voltage systems against voltages of up to +28V. If the input voltage exceeds the overvoltage trip level, the device turn off the low-cost external n-channel FET to prevent damage to the protected components. An internal charge pump eliminates the need for external capacitors and drives the FET gate for a simple, robust solution. the MAX4840A has a 5.8V overvoltage threshold and undervoltage-lockout threshold of 3.25V. In addition to the single FET configuration, the devices can be configured with back-to-back external FETs to prevent currents from being back-driven into the adapter. On power-up, the device waits for 50ms before driving GATE high. Fault indication output is held low for an additional 50ms after GATE goes high before deasserting. It has an open-drain Fault indication output, it asserts immediately to an overvoltage fault.

• Supply voltage range is 1.2V to 28V
• Operating temperature range from -40°C to 85°C
• ±15KV ESD protected input
• Shutdown pin to turn off the device
• Supply current is 80µA

Applications

Power Management, Portable Devices

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party