High voltage input protection controller provides inrush current limiting and overcurrent protection for modular and battery-powered systems. The controller operates from 4 V to 60 V supplies and drives external P-channel FETs for current limiting and low voltage drop reverse supply protection. Adjustable current limit, foldback limiting, analog undervoltage and overvoltage protection, power-good output, and fault output functions are integrated. The device is specified over a −40°C to +125°C operating temperature range and is offered in 16-lead 3 mm × 3 mm LFCSP and 16-lead QSOP packages.
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| Product Type | High voltage input protection current-limiting controller |
| Supply Voltage Range | 4 to 60V |
| Quiescent Current | 360 typ, 500 maxµA |
| Undervoltage Threshold | 1.0 typV |
| Undervoltage Threshold Hysteresis | 60 typmV |
| Overvoltage Threshold | 1.0 typV |
| Overvoltage Threshold Hysteresis | 30 typmV |
| VCAP Regulated Voltage | 3.6 typV |
| UVLO Rising Threshold | 3.4 typV |
| UVLO Falling Threshold | 3.0 typV |
| Current Sense Limit | 50 typmV |
| Overcurrent Sense Threshold | 100 typmV |
| Gate Drive Voltage | 12 typV |
| Reverse Protection FET Gate Drive Offset | 12 typV |
| Timer High Threshold | 2.0 typV |
| Timer Pull-Up Current | -20 typµA |
| Operating Temperature Range | -40 to +125°C |
| Package Options | 16-lead LFCSP 3 mm × 3 mm; 16-lead QSOP |
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