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Part Number
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MAX1686H |
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Manufacturer
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Maxim Integrated |
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Description
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Charge Pumps |
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Published
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Oct 21, 2018 |
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Detailed Description
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MAX1686/MAX1686H
19-1376; Rev 1; 12/98
3V to 5V Regulating Charge Pumps for SIM Cards
General Description
The MAX1686...
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Datasheet
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MAX1686H
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Overview
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 regulated 5V output.
The MAX1686H has a nominal output voltage of 5.
0V, while the MAX1686 is set to 4.
75V to reduce SIMcard current drain.
The charge pump has only 45µA quiescent supply current, which reduces to 3µA when a 3V-capable SIM card is being powered and the charge pump is disabled.
An internal input/output shorting switch provid...
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