MAX1686/MAX1686H
19-1376; Rev 1; 12/98
3V to 5V Regulating Charge Pumps for SIM Cards
General Description
The MAX1686 provides power for dual-voltage subscriber ID module (SIM) cards in portable applications such as GSM cellular phones. Designed to reside in the portable unit (cellular phone handset), the 1MHz charge pump converts a 2.7V to 4.2V input to ...