| US 7,468,600 B2 | ||
| Voltage regulation unit with Zener diode and voltage regulation device thereof | ||
| Yung-Feng Lin, Dasi Township, Taoyuan County (Taiwan) | ||
| Assigned to Macronix International Co., Ltd., Hsinchu (Taiwan) | ||
| Filed on Nov. 20, 2007, as Appl. No. 11/984,585. | ||
| Application 11/984585 is a continuation of application No. 11/545571, filed on Oct. 11, 2006, granted, now 7,330,020. | ||
| Prior Publication US 2008/0100270 A1, May 01, 2008 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. G05F 3/04 (2006.01) | ||
| U.S. Cl. 323—312 | 4 Claims |
| 1. A controlling method applied in a voltage regulator, which is driven by a driving voltage provided by a charge pump, the
controlling method comprising:
generating a first current signal and a second current signal according to the driving voltage;
determining whether the voltage level of the driving voltage reaches a predetermined voltage level according to the second
current signal; and
generating a control signal according to the second current signal,
wherein, the control signal is fed back to the charge pump to control the charge pump.
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