ISL9111, ISL9111A

FN7602 Rev.4.00

Page 4 of 15

Jun 4, 2012

Pin Configurations

FIXED (5.0V/3.3V/3.0V)

(6 LD SOT-23)

TOP VIEW

ADJUSTABLE OUTPUT

(6 LD SOT-23)

TOP VIEW

VOUT

5

VIN

FAULT

SW

GND

EN

1

2

3

4

6

VOUT

5

VIN

FB

SW

GND

EN

1

2

3

4

6

Pin Descriptions

FIXED (5.0V, 3.3V, 3.0V)

PIN NUMBER

ADJUSTABLE OUTPUT

PIN NUMBER

SYMBOL

PIN DESCRIPTION

1

1

SW

The SW pin is the switching node of the power converter. Connect one terminal of

the inductor to the SW pin and the other to power input.

22

GND

System ground

3

3

EN

The EN pin is an active-high logic input for enabling the device. When asserted high,

the boost function begins. When asserted low, the device is completely disabled,

and current is blocked from flowing from the SW pin to the output and vice versa.

This pin should be tied either high to enable the device or low to disable.

4-

FAULT

Fault output; outputs logic LOW under a number of fault conditions (see Table 1 on

page 10).

-

4

FB

Feedback pin of the converter. Connect voltage divider resistors between VOUT, FB

and GND for desired output. See Figures 3A, 4A, and 5A.

5

5

VOUT

Device output

6

6

VIN

Device input supply pin. Connect a 4.7µF ceramic capacitor to the power ground.