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廬

ISL8107

Data Sheet

December 11, 2007

FN6605.0

Single-Phase Pulse-Width Modulation

(PWM) Controller with Integrated

High-Side Gate Drivers

The ISL8107 is a single phase, non-synchronous buck

controller with an integrated high-side MOSFET driver. The

controller operates from 9V to 75V input voltage range. The

internal 1.192V reference voltage has a tolerance of 鹵1%

over the industrial temperature range.

The ISL8107 employs voltage-mode control with

feedforward compensation to provide optimal transient

response and a constant loop gain over a wide input voltage

range. The switching frequency can be programmed from

100kHz to 600kHz by external resistor and capacitor. The

switching frequency can be synchronized to an external

clock signal through the SYNC pin.

The ISL8107 features programmable soft-start, hiccup mode

for short circuit protection, and over-temperature protection.

The overcurrent protection is implemented using MOSFET鈥檚

r

DS(ON)

sensing. This approach simplifies the implementation

without deteriorating the converter efficiency.

Features

鈥?Operates from +9V to +75V Bias Supply Voltage

鈥?+1.192V Internal Voltage Reference

- 鹵1% tolerance Over the Industrial Temperature Range

鈥?Programmable Switching Frequency 100kHz to 600kHz

鈥?Simple Single-Loop Voltage Mode Control

鈥?Voltage Feedforward Compensation

鈥?Switching Frequency Synchronization

鈥?Lossless, Programmable Overcurrent Protection

- Uses MOSFET鈥檚 r

DS(ON)

- Hiccup Mode

鈥?Integrated N-Channel MOSFET Gate Drivers

鈥?Programmable Soft-Start

鈥?Over-Temperature Protection

鈥?QFN (5x5) Package

- QFN compliant to JEDEC PUB95 MO-220 QFN - Quad

Flat No Leads - Product Outline

- QFN Near Chip Scale Package Footprint; Improves

PCB Efficiency, Thinner in Profile

鈥?Pb-free (RoHS compliant)

Pinout

ISL8107

(16 LD 5X5 QFN)

TOP VIEW

UGATE

PHASE

PVCC

BOOT

Applications

鈥?Test and Measurement Instruments

鈥?Routers and Switchers

鈥?Point of Load Modules

12

EN/SS

11

PGND

16

VFF

OCSET

VCC

SYNC

1

2

3

4

5

RT/CT

15

14

13

鈥?Distributed DC/DC Power Architecture

鈥?Industrial Applications

鈥?Telecom/Datacom Applications

10

PGOOD

9

6

SGND

7

FB

8

COMP

VBG

Ordering Information

PART

NUMBER

(Note)

ISL8107IRZ

PART

MARKING

ISL8107 IRZ

TEMP.

RANGE (擄C)

-40 to +85

-40 to +85

PACKAGE

(Pb-Free)

PKG.

DWG. #

16 Ld 5x5 QFN L16.5x5B

16 Ld 5x5 QFN L16.5x5B

Tape and Reel

ISL8107IRZ-T* ISL8107 IRZ

*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.

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. All Rights Reserved

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

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