Micrel, Inc.

MIC79110

September 23, 2013

2

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

1

SD

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

2

RSET

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

3

SNS

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

3

ADJ

(Adjustable voltage only): Feedback input.

4

BAT

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

5, 6

VIN

Input supply pin.

7

ACHG

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

BAT pin current.

8

DEOC

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

charge.

9

REOC

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

10

GND

Ground