MIC79110_07 datasheet(4/14 Pages) MICREL

4 / 14 page

Micrel, Inc.

MIC79110

October 2007

M9999-102507

Notes

Exceeding the absolute maximum rating may damage the device.

The device is not guaranteed to function outside its operating rating.

Dropout Voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value measured at 1V

differential. For outputs below 2.5V, dropout voltage is the input-to-output voltage differential with the minimum input voltage 2.5V. Minimum input

operating voltage is 2.5V.

VNOM denotes the nominal output voltage.

IRSET = (0.2V/RSET) × 1000

Output Current IEOC when Digital End-of-Charge output goes high impedance. Currents greater than IEOC, the DEOC output is low, currents lower

than IEOC, DEOC is high impedance.

IEOC = (0.2V/REOC) × 1000

ISOURCE is the current output from ACHG pin. A resistor to ground from the ACHG pin will program a voltage that is proportional to the output current.

Block Diagram

VIN

RSET

VREF

BAT

DEOC

GND

Li-Ion

ACHG

REOC

SNS

Current

Limit Set

End of

Charge

Detect

Current

Limit Sense

Shutdown

Control

Thermal

Protection

MIC79110 Block Diagram

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