Maxim's new ultra-low quiescent current, high-voltage, low-dropout (LDO) linear regulators are designed for harsh automotive environments. The MAX15006/7 can operate from a cold-crank voltage as low as 4 V and withstand load-dump transients as high as 45 V. Both devices deliver up to 50 mA of output current and have an ultra-low 10 μA (typ) quiescent current at no load. An internal p-channel pass transistor keeps the quiescent current as low as 90 μA (typ), even with a 50 mA load. Additionally, the MAX15007 consumes only 3 μA of quiescent current in shutdown. The MAX15006/MAX15007 include robust short-circuit protection. The output of each regulator can be shorted to ground for an indefinite duration, even with an input voltage as high as 40 V. In addition, both devices include thermal shutdown. They are specified for operation over the -40 to +125°C and are available in 3,3 V or 5 V output versions. These devices come in 6-pin TDFN or 8-pin SO.
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