First current-sharing LDOs target harsh environments

The 3-A TPS7H1101-SP and the 0.5-A TPS7H1201-HT are the first current-sharing LDO linear voltage regulators for harsh environments. The current-sharing feature allows designers to use two devices in parallel for twice the output current.

The LDOs feature input from 1.5 to 7-V, which allows voltage support for power rails below 3.3 V. Two TPS7H1101-SP LDOs used in parallel can output up to 6 A, while two TPS7H1201-HT LDOs can output up to 1 A. The LDOs feature 80% better thermal performance than similar solutions offered today. The TPS7H1101-SP LDO is QML Class V-qualified up to 125°C for harsh environments, such as high-reliability medical equipment, satellites and undersea cabling. The TPS7H1201-HT LDO is qualified up to 210°C for high-temperature applications, such as downhole drilling.