Circuits, devices, methods and systems to secure power-up for battery operating devices even with low current chargers and to execute other performances

A mobile electronic device for use with a rechargeable battery and with energy from a battery charger, the device comprising:

• a powering circuit having an electrical energy input, a charging output and a voltage output;
• a functional electronic circuit coupled to the voltage output of said powering circuit, said functional electronic circuit subject to operational interruption if said functional electronic circuit uses more current to usefully operate than is available from said powering circuit, said functional electronic circuit having a power management circuit with a control input;
• and
• an anti-crash loop mechanism having input sense lines coupled to said charging output and said voltage output of said powering circuit and said mechanism having a control line output to activate and inactivate said control input of said power management circuit, said mechanism operable to detect a condition indicative of such operational interruption of the functional electronic circuit from at least one of said input sense lines and free of any input from said functional electronic circuit and to consequently inactivate said control input of said power management circuit, said mechanism further operable thereafter to determine, independent of any charger detection, that a sufficient charging at the charging output has occurred and to signal a power-good determination via said control line output to said control input of said power management circuit to enable operation by said functional electronic circuit.