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ISL8560

DC/DC Power Switching Regulator

Intersil 

®

Data Sheet

September 19, 2008

ISL8560

FN9244.7

DC/DC Power Switching Regulator

The ISL8560 is a step down DC/DC power switching

regulator which accepts 9.0V to 60V input and provides a 2A

output current. The output voltage can be set in the range

between 1.21V and 55V by means of an external divider.

The device uses an internal power DMOS transistor with a

typical rDS(ON) of 0.19Ω to obtain very high efficiency and

high switching speed. A switching frequency in the range of

100kHz to 600kHz can be realized (the maximum power

dissipation of the various packages must be observed).

Notable features of this next generation of DC/DC converter

includes pulse-by-pulse current limit for FET protection,

hiccup mode for short circuit protection, voltage feedforward

regulation, Frequency SYNC, soft-start, low standby current

of 60µA typical in the disabled state, and thermal shut-down.

The device is available in a 20 Ld QFN package.

Ordering Information

PART

NUMBER

(Note)

PART

MARKING

TEMP.

RANGE

(°C)

PACKAGE

(Pb-Free)

PKG.

DWG. #

ISL8560IRZ ISL 8560IRZ -40 to +85 20 Ld 6x6 QFN L20.6x6B

ISL8560IRZ-T* ISL 8560IRZ -40 to +85 20 Ld 6x6 QFN L20.6x6B

*Please refer to TB347 for details on reel specifications.

NOTE: These Intersil Pb-free plastic packaged products employ

special Pb-free material sets, molding compounds/die attach

materials, and 100% matte tin plate plus anneal (e3 termination

finish, which is RoHS compliant and compatible with both SnPb and

Pb-free soldering operations). Intersil Pb-free products are MSL

classified at Pb-free peak reflow temperatures that meet or exceed

the Pb-free requirements of IPC/JEDEC J STD-020.

Features

• Voltage feedforward mode

• Step down DC/DC supporting up to 2A

• Input voltage range of 9.0V to 60V

• Internal reference of 1.21V ±1%

• Adjustable output voltage range of 1.21V to 55V

• Adjustable switching frequency 100kHz to 600kHz

• Frequency SYNC pin

• Zero load current operation

• Pulse-by-pulse mode current limit and Hiccup mode

• Low standby current of 60µA typical

• Thermal shut-down

• Load dump to 100V for 400ms

• Pb-Free (RoHS compliant)

Applications

• Industrial and automotive power supplies

• Portable computers

• Battery chargers

• Distributed power systems

Related Literature

• Technical Brief TB363 “Guidelines for Handling and

Processing Moisture Sensitive Surface Mount Devices

(SMDs)”

Pinout

ISL8560

(20 LD QFN)

TOP VIEW

20 19 18 17 16

LX 1

LX 2

BOOT 3

EN 4

VCC5 5

15 LX

14 SS

13 PGND

12 PGOOD

11 REF

6 7 8 9 10

1

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.

Copyright Intersil Americas Inc. 2007, 2008. All Rights Reserved

All other trademarks mentioned are the property of their respective owners.

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