MIC79110_13 datasheet(2/16 Pages) MICREL

2 / 16 page

Micrel, Inc.

MIC79110

September 23, 2013

Revision 2.1

Ordering Information

Part Number

Marking

Code(1)

Voltage

Junction Temperature Range

Package

MIC79110-4.2YML

L942

4.2V

–40° to +125°C

10-Pin 3mm × 3mm DFN

MIC79110YML

L9AA

Adjustable

–40° to +125°C

10-Pin 3mm × 3mm DFN

1. Pb-Free “Y” indicator is added to the device mark after logo.

Pin Configuration

Fixed Output

10-Pin 3mm × 3mm DFN (ML)

Adjustable Output

10-Pin 3mm × 3mm DFN (ML)

Pin Description

Pin Number

Pin Name

Pin Function

Shutdown Input. Logic HIGH = Off; Logic LOW = On.

RSET

Current limit: Sets constant current limit via an external resistor to ground.

IRSET = (0.2V/RSET) × 1000.

SNS

(Fixed voltage only): Sense output, connect directly to battery.

ADJ

(Adjustable voltage only): Feedback input.

BAT

Battery Terminal. Connect to single-cell lithium-ion battery.

5, 6

VIN

Input supply pin.

ACHG

Analog Charge Indicator Output: Current source who’s output current is equal to 1/1000 of the

BAT pin current.

DEOC

Digital End-of-Charge Output: N-Channel open-drain output. LOW indicates charging, a current

that is higher than the programmed current set by REOC is charging the battery. When the current

drops to less than the current set by REOC, the output goes high impedance, indicating end-of-

charge.

REOC

End-of-Charge Set: Sets end-of-charge current threshold via an external resistor to ground.

IEOC = (0.2V/ REOC) × 1000.

GND

Ground

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