MAX4865 Datasheet | Maxim Integrated

Description The MAX4864L/MAX4865L/MAX4866L/MAX4867/ MAX4865/MAX4866 overvoltage protection controllers protect low-voltage systems against high-voltage faults up to +28V, and negative voltages down to -28V. These devices drive a low-cost plementary MOSFET. If the input voltage exceeds the overvoltage threshold, these devices turn off the n-channel MOSFET to prevent damage to the protected ponents. If the input voltage drops below ground, the devices turn off the p-channel MOSFET to prevent damage to the protected ponents. An internal charge pump eliminates the need for external capacitors and drives the MOSFET GATEN for a simple, robust solution. The overvoltage thresholds are preset to +7.4V (MAX4864L), +6.35V (MAX4865L), +5.8V (MAX4866L), and +4.65V (MAX4867). When the input voltage drops below the undervoltage lockout (UVLO) threshold, the devices enter a low-current standby mode (8.5µA). Also in shutdown (EN set to logic-high), the current is reduced further (0.4µA). The MAX4864L/MAX4865L/MAX4866L have a +2.85V UVLO threshold, and the MAX4867 has a +2.5V UVLO threshold. The MAX4865/MAX4866 have a 4.15V UVLO threshold. In addition, a ±15k V ESD protection is provided to the input when bypassed with a 1µF capacitor to ground. All devices are offered in a small 6-pin SOT23 and a 6-pin, 2mm x 2mm µDFN package, and are specified for operation over the -40°C to +85°C temperature range. Features - Overvoltage Protection Up to +28V - Reverse Polarity Protection Down to -28V - Preset Overvoltage (OV) Trip Level (7.4V, 6.35V, 5.8V, 4.65V) - Drive Low-Cost plementary MOSFET - Internal 50ms Startup Delay - Internal Charge Pump - 8.5µA Standby Current (In UVLO Mode) - 0.4µA Shutdown Current - Overvoltage Fault FLAG Indicator - 6-Pin (2mm x 2mm) µDFN and 6-Pin SOT23 Packages MAX4864L/MAX4865L/MAX4866L/MAX4867/MAX4865/MAX4866 Ordering Information PART MAX4864LEUT-T MAX4864LELT MAX4865LEUT-T MAX4865LELT MAX4866LEUT-T MAX4866LELT MAX4867EUT-T MAX4867ELT PINPACKAGE 6 SOT23-6 6...