ISL9112IRTNZ datasheet(2/20 Pages) INTERSIL

Part #	ISL9112IRTNZ

Description	1.2A High Efficiency Buck-Boost Regulators

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Manufacturer	INTERSIL [Intersil Corporation]

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ISL9110, ISL9112

2

FN7649.2

July 13, 2012

Block Diagram

Pin Configurations

ISL9110

(12 LD TDFN)

TOP VIEW

ISL9112

(12 LD TDFN)

TOP VIEW

OSC

ERROR

AMP

PVIN

PWM

CONTROL

PVIN

MONITOR

LX1

VREF

REF

VOUT

5

4

2

LX2

GATE

DRIVERS

& ANTI-

SHOOT THRU

6

VIN

THERMAL

SHUTDOWN

I2C

CURRENT

DETECT

1

VOUT

MONITOR

9

EN

12 FB

3 PGND

11

GND

EN

VOUT

CLAMP

8

BAT

10

MODE/SYNC

7

8

SCL

SDA

7 PG

VOLTAGE

PROG.

EN

SOFT

DISCHARGE

VOUT

PVIN

PGND

FB

GND

LX1

LX2

VIN

EN

MODE/SYNC

1

2

3

4

5

6

7

8

9

10

11

12

PG

BAT

ISL9110

PAD

SCL

SDA

ISL9112

PAD

VOUT

PVIN

PGND

FB

GND

LX1

LX2

VIN

EN

MODE/SYNC

1

2

3

4

5

6

7

8

9

10

11

12

Pin Descriptions

PIN # ISL9110 ISL9112

DESCRIPTION

1

VOUT

Buck/boost output. Connect a 10µF

capacitor to PGND.

2

LX2

Inductor connection, output side.

3

PGND

Power ground for high switching current.

4

LX1

Inductor connection, input side.

5

PVIN

Power input. Range: 1.8V to 5.5V. Connect a

10µF capacitor to PGND.

6

VIN

Supply input. Range: 1.8V to 5.5V.

7PG

-

Open drain output.

Provides output-power-good status.

-SCL

Logic input, I2C clock.

8BAT

-Open drain output.

Provides input-power-good status.

-

SDA

Logic I/O, open drain, I2C data.

9

EN

Logic input, drive high to enable device.

10

MODE /

SYNC

MODE /

SYNC

Logic input, high for auto PFM mode. Low for

forced PWM operation.

Ext. clock sync input. Range: 2.75MHz to

3.25MHz.

11

GND

Analog ground pin.

12

FB

Voltage feedback pin.

PAD

Exposed pad; connect to PGND.

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ISL9112IRTNZ Datasheet(PDF) 2 Page - Intersil Corporation

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