A7801 DC-DC CONVERTER LOW NOISE, REGULATED CHARGE PUMP
(400kHz) switched capacitor voltage doubler. It
produce a regulated output voltage from a 2.5V to 5.5V input with up to 250mA of output current. Low external parts count (one flying capacitor and two small bypass capacitors at VIN and VOUT) make the
A7801 ideally suited for small, battery-powered
applications.
A new charge-pump architecture maintains
constant switching frequency to zero load and
reduces both output and input ripple. The A7801 have thermal shutdown capability and can survive a continuous short circuit from VOUT to GND. Built-in soft-start circuitry prevents excessive inrush current
during start-up.
High switching frequency enables the use of small
ceramic capacitors. A low current shutdown feature disconnects the load from VIN and reduces quiescent current to <1uA.
The A7801 is available in SOT-26 package.
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[ White LED Backlighting ][ Li-Ion Battery Backup Supplies ][ Local 3V to 5V Conversion ][ Smart Card Readers ][ PCMCIA Local 5V Supplies ] |
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Datasheet |
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Halogen free 、 RoHS |
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Please see the document for details |
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SOT-26 |
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English Chinese Chinese and English Japanese |
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JAN 2015 |
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REV1.0 |
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630 KB |
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