1

®

FN6831.0

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

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ISL62386

High-Efficiency, Quad Output System

Power Supply Controller for Notebook

Computers

The ISL62386 controller generates supply voltages for

battery-powered systems. The ISL62386 includes two

pulse-width modulation (PWM) controllers, adjustable from

0.6V to 5.5V, and two linear regulators, LDO5 and LDO3,

that generate a fixed 5V output and a fixed 3.3V output

respectively. Each can deliver up to 100mA. The Channel 2

switching regulator will automatically take over the LDO5

load when programmed to 5V output. This provides a large

power saving and boosts efficiency. The ISL62386 includes

on-board power-up sequencing, one power-good (PGOOD)

output, digital soft-start, and an internal soft-stop output

discharge that prevents negative voltages on shutdown.

system with fast response to load transients. Light-load

efficiency is improved with period-stretching discontinuous

conduction mode (DCM) operation. To eliminate noise in

audio frequency applications, an ultrasonic DCM mode is

included, which limits the minimum switching frequency to

approximately 28kHz.

The ISL62386 is available in a 32 Ld 5x5 TQFN package,

and can operate over the extended temperature range

(-10°C to +100°C).

Features

• Fast Transient Response

• ±1% Output Voltage Accuracy: -10°C to +100°C

• Two Fully Programmable Switch-Mode Power Supplies

with Independent Operation

• Programmable Switching Frequency

• Integrated MOSFET Drivers and Bootstrap Diode

• Fixed +3.3V LDO Output with Enable Control

• Fixed +5V LDO with Automatic Switchover to SMPS2

• Internal Soft-Start and Soft-Stop Output Discharge

• Wide Input Voltage Range: +5.5V to +25V

• Full and Ultrasonic Pulse-Skipping Mode

• Power-Good Indicator

• Overvoltage, Undervoltage and Overcurrent Protection

• Thermal Monitor and Protection

• Pb-Free (RoHS Compliant)

Applications

• Notebook and Sub-Notebook Computers

• PDAs and Mobile Communication Devices

• 3-Cell and 4-Cell Li+ Battery-Powered Devices

• General Purpose Switching Buck Regulators

Pinout

ISL62386

(32 LD 5X5 TQFN)

TOP VIEW

Ordering Information

PART

NUMBER

(Note)

PART

MARKING

TEMP

RANGE

(°C)

PACKAGE

(Pb-Free)

PKG.

DWG. #

ISL62386HRTZ

62386 HRTZ -10 to +100 32 Ld 5x5 TQFN L32.5x5A

ISL62386HRTZ-T* 62386 HRTZ -10 to +100 32 Ld 5x5 TQFN L32.5x5A

*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.

FSET2

FCCM

AGND2

VCC

AGND1

LDO3EN

FSET1

PGOOD

BOOT2

LGATE2

PGND

LDO5

VIN

LDO3

LGATE1

BOOT1

1

2

3

4

5

6

7

8

24

23

22

21

20

19

18

17

32

31

30

29 28

27

26

25

9

1011

12 13

1415

16

THERMAL PAD

(AGND)

Data Sheet

February 4, 2009