1

®

FN6449.0

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

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Copyright Intersil Americas Inc. 2007. All Rights Reserved

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PRELIMINARY*

ISL8601

Single-Phase, PMBus-Enabled PWM

Controller with Integrated FET Drivers

The ISL8601 is a single-phase PWM controller with integrated

MOSFET drivers utilizing analog voltage mode control. The

ISL8601 features extensive PMBus compliance that enables

rapid and flexible power supply design and comprehensive

product evaluation and testing. Exceptional flexibility in the

customization of operating parameters and system monitoring

functions is provided via the large PMBus command set. The

Inductor DCR current sensing. Programmable temperature

compensation for sensed current values is provided to ensure

PMBus commands for the ISL8601 can also be programmed

via external resistors, bringing the power and flexibility of

PMBus into low-cost power supply systems.

Pinout

ISL8601

(40 LD 6x6 QFN)

Features

• Input Voltage Range: +1.8V to 13.2V

• VBIAS Voltage Range: +4.5V to 13.2V

• Minimum Output Voltage: +0.5V

• ±1.0% System Accuracy Over the Range of -40°C to

+85°C When Using the 0.8V Reference

• Internal Reference Voltage Programmable from 0.4V to

0.9V in 4mV Steps

• Integrated 2A to 4A MOSFET Drivers

• External Frequency Synchronization

• Selectable Phase Delay: 0°, 90°, 120°, 180°, 240°, or 270°

Sensing

• Voltage Feedforward Compensation

• Extensive PMBus Compliance

• Broad PMBus Programmability Including Output Voltage,

Overvoltage Threshold, Overcurrent Threshold,

Overtemperature Threshold, Switching Frequency, Turn-

On and Turn-Off

• PMBus Monitoring of Load Current, Input Voltage, Output

Voltage and Temperature

• Resistor Programming of Select PMBus Parameters

• Operating Frequency Range: 200kHz to 2MHz

• Internal and External Temperature Measurement

• Overvoltage, Undervoltage and Overtemperature

Protection

• Low-Side and High-Side Overcurrent Protection

• Programmable Supply Sequencing and Tracking

• Digital Soft-Start with Multiple Soft-Start Modes

• Multiple Programmable Fault-Handling Modes

• Multiple Prebiased Startup Options

• Differential Remote Voltage Sensing

• Power-Good Output with Programmable Delay

Applications

• Ethernet Routers and Switches

• Point-of-Load Modules

• Industrial Power Management

Ordering Information

PART NUMBER TEMP RANGE (°C)

PACKAGE

PKG. DWG. #

ISL8601IRZ

-40 to +85

40 Ld 6x6 QFN L40.6x6

NOTE: Intersil Pb-free plus anneal products employ special Pb-free

material sets; molding compounds/die attach materials and 100%

matte tin plate termination finish, which are 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.

1

40

2

3

4

5

6

7

8

9

10

30

29

28

27

26

25

24

23

22

21

39 38 37 36 35 34 33 32 31

11 12 13 14 15 16 17 18 19 20

RGND

PGND

LGATE

PVCC

PHASE

UGATE

BOOT

HSOC

DGND

PGOOD

ROSC

ISENSN

ISENSP

N/C

N/C

LSOC

AGND

C25A

SS

COMP

GND

BOTTOM

SIDE PAD

Data Sheet

*All functional details and specifications are preliminary and subject to change

March 23, 2007