ISL9305IRTHWCNLZ-T(2010) View Datasheet(PDF) - Intersil

Part Name

Description

Manufacturer

ISL9305IRTHWCNLZ-T
(Rev.:2010)

3MHz Dual 1.5A Step-Down Converters and Dual Low-Input LDOs with I2C Compatible Interface

Intersil 

ISL9305H

Pin Descriptions (Continued)

PIN NUMBER

(TQFN)

11

12

13

14

15

16

E-PAD

NAME

FB2

VINDCD2

SW2

GNDDCD2

GNDDCD1

SW1

E-PAD

DESCRIPTION

Feedback pin for DCD2, connect external voltage divider resistors between DCD2 output, this pin and ground. For

fixed output versions, connect this pin directly to the DCD2 output.

Input voltage for buck converter DCD2.

Switching node for DCD2, connect to one terminal of the inductor.

Power ground for DCD2.

Power ground for DCD1.

Switching node for DCD1, connect to one terminal of the inductor.

Exposed Pad. Connect to system ground.

Block Diagram

DCDPG

PGOOD WITH

1~200ms

DELAY TIME

UVLO

VREF

OSC

SDAT

SCLK

I2C

INTERFACE

SHORT

CIRCUIT

PROTECTION

ANALOG/LOGIC

CIRCUIT INPUT

DCD1

BUCK

CONVERTER

OVERCURRENT

PROTECTION

DCD2

BUCK

CONVERTER

THERMAL

SHUTDOWN

LDO1

300mA

LDO2

300mA

VINDCD1

1.5µH

SW1

FB1

GNDDCD1

VINDCD2

1.5µH

SW2

FB2

GNDDCD2

VINLDO1

VOLDO1

VINLDO2

VOLDO2

GNDLDO

10µF

10µF

10µF

10µF

1µF

10µF

1µF

10µF

3

FN7724.0

November 8, 2010

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