System and method for low power start-up circuit for bandgap vol

Details System and method for low power start-up circuit for bandgap vol System and method for low power start-up circuit for bandgap vol

1998-09-30

2000-07-04

Han, Y. J.

Electricity: power supply or regulation systems

Self-regulating

Using a three or more terminal semiconductive device as the...

363 49, G05F 316, H02M 7122

Patent

active

060843888

ABSTRACT:
A start-up circuit with lower current requirements than a conventional start-up circuit is disclosed. The start-up circuit may achieve lower current requirements by reducing the current of the start-up circuit to approximately zero when the bandgap circuit reaches a predetermined value. For example, the start-up circuit may peak at a current of 3.3 micro Amps in order to ensure that the bandgap circuit reaches the predetermined voltage. Thereafter, the current for the start-up circuit may be reduced to approximately zero once the bandgap circuit no longer requires the start-up circuit.

REFERENCES:
patent: 4340851 (1982-07-01), Nishikawa
patent: 4839535 (1989-06-01), Miller
patent: 5712776 (1998-01-01), Palara et al.
patent: 5867013 (1999-02-01), Yu

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