Claims
- 1. A charge/discharge control circuit comprising:
- reference voltage generating means for outputting a reference voltage by receiving a voltage supplied from a battery;
- voltage dividing means connected to the battery for dividing a voltage of the battery into a plurality of divided voltages;
- error amplifying means for receiving the reference voltage and at least one of the plurality of divided voltage outputs from the voltage dividing means and for amplifying voltages representative of the differences between the reference voltage and the plurality of divided voltages; and
- current limiting means for limiting a consumption current through the error amplifying means in response to a current limiting signal.
- 2. The charge/discharge control circuit according to claim 1; wherein the error amplifying means comprises a multi-input error amplifier, and the current limiting means comprises a current limiting transistor connected in series with the multi-input error amplifier.
- 3. The charge/discharge control circuit according to claim 1; wherein the error amplifying means comprises a plurality of error amplifiers for receiving the reference voltage and the plurality of divided voltages.
- 4. The charge/discharge control circuit according to claim 1; wherein the error amplifying means comprises a plurality of error amplifiers for receiving the reference voltage and the plurality of divided voltages, respectively, and the current limiting means comprises a common current limiting transistor connected in series with the plurality of error amplifiers.
Priority Claims (18)
Number |
Date |
Country |
Kind |
4-313515 |
Nov 1992 |
JPX |
|
5-3561 |
Jan 1993 |
JPX |
|
5-51110 |
Mar 1993 |
JPX |
|
5-52476 |
Mar 1993 |
JPX |
|
5-56208 |
Mar 1993 |
JPX |
|
5-57563 |
Mar 1993 |
JPX |
|
5-57564 |
Mar 1993 |
JPX |
|
5-62259 |
Mar 1993 |
JPX |
|
5-62260 |
Mar 1993 |
JPX |
|
5-65758 |
Mar 1993 |
JPX |
|
5-67132 |
Mar 1993 |
JPX |
|
5-94677 |
Apr 1993 |
JPX |
|
5-120198 |
May 1993 |
JPX |
|
5-126238 |
May 1993 |
JPX |
|
5-220279 |
Sep 1993 |
JPX |
|
5-223647 |
Sep 1993 |
JPX |
|
5-224186 |
Sep 1993 |
JPX |
|
5-261285 |
Oct 1993 |
JPX |
|
Parent Case Info
The present application is a divisional of prior U.S. application Ser. No. 08/816,196, filed on Mar. 12, 1997, now U.S. Pat. No. 5,841,265, which is hereby incorporated by reference, and priority thereto for common subject matter is hereby claimed.
US Referenced Citations (9)
Foreign Referenced Citations (4)
Number |
Date |
Country |
0458716 |
Nov 1991 |
EPX |
0512340 |
Nov 1992 |
EPX |
0525744 |
Feb 1993 |
EPX |
63-132783 |
Aug 1988 |
JPX |
Non-Patent Literature Citations (5)
Entry |
Mead et al., "Intro to VLSI Systems", 1980, p. 51. |
Grebene, "Bipolar and MOS Analog Integrated Circuit Design", p. 142. (No Date). |
Patent Abstracts of Japan, vol. 17, No. 473 (E-1423) Aug. 27, 1993. |
Patent Abstracts of Japan, vol. 17, No. 13 (E-1304) Jan. 11, 1993. |
Ruska, "Microelectronics Processing: An Intro to the Manufacture of Integrated Circuits", 1987, pp. 105-108. |
Divisions (1)
|
Number |
Date |
Country |
Parent |
816196 |
Mar 1997 |
|