Datasheet > ISL6524

ISL6524

更新时间： 2024-11-27 22:57:23

品牌	Logo	应用领域
英特矽尔 - INTERSIL		控制器
页数	文件大小	规格书
16页	442K
描述
VRM8.5 PWM and Triple Linear Power System Controller

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ISL6524 数据手册

ISL6524

Data Sheet

April 18, 2005

FN9015.3

VRM8.5 PWM and Triple Linear Power

Sys tem Controller

Features

• Provides 4 Regulated Voltages

- Microprocessor Core, AGTL+ Bus, AGP Bus Power,

and North/South Bridge Core

The ISL6524 provides the power control and protection for

four output voltages in high-performance microprocessor

and computer applications. The IC integrates one PWM

controller and three linear controllers, as well as the

monitoring and protection functions into a 28-pin SOIC

package. The PWM controller regulates the microprocessor

core voltage with a synchronous-rectified buck converter.

One linear controller supplies the computer system’s AGTL+

1.2V bus power. The other two linear controllers regulate

power for the 1.5V AGP bus and the 1.8V power for the chip

set core voltage and/or cache memory circuits.

• Drives N-Channel MOSFETs

• Linear Regulator Drives Compatible with both MOSFET

and Bipolar Series Pass Transistors

• Simple Single-Loop Control Design

- Voltage-Mode PWM Control

• Fast PWM Converter Transient Response

- High-Bandwidth Error Amplifier

- Full 0% to 100% Duty Ratio

The ISL6524 includes an Intel VRM8.5 compatible, TTL

5-input digital-to-analog converter (DAC) that adjusts the

microprocessor core-targeted PWM output voltage from

1.050V to 1.825V in 25mV steps. The precision reference and

voltage-mode control provide ±1% static regulation. The linear

regulators use external N-channel MOSFETs or bipolar NPN

pass transistors to provide fixed output voltages of 1.2V ±3%

• Excellent Output Voltage Regulation

- Core PWM Output: ±1% Over Temperature

- All Other Outputs: ±3% Over Temperature

• VRM8.5 TTL-Compatible 5-Bit DAC Microprocessor Core

Output Voltage Selection

- Wide Range - 1.050V to 1.825V

), 1.5V ±3% (V

) and 1.8V ±3% (V ).

OUT2

OUT3

OUT4

• Power-Good Output Voltage Monitors

- Separate delayed VTT Power Good

The ISL6524 monitors all the output voltages. A delayed-

rising VTT (V output) Power Good signal is issued

OUT2

• Overcurrent Fault Monitor

before the core PWM starts to ramp up. Another system

Power Good signal is issued when the core is within ±10% of

the DAC setting and all other outputs are above their under-

voltage levels. Additional built-in overvoltage protection for

the core output uses the lower MOSFET to prevent output

voltages above 115% of the DAC setting. The PWM

- Switching Regulator Doesn’t Require Extra Current

Sensing Element, Uses MOSFET’s r

DS(ON)

• Small Converter Size

- Constant Frequency Operation

- 200kHz Internal Oscillator

controllers’ overcurrent function monitors the output current

by using the voltage drop across the upper MOSFET’s

DS(ON)

• Pb-Free Available (RoHS Compliant)

Applications

, eliminating the need for a current sensing resistor.

•

Motherboard Power Regulation for Computers

Pinout

ISL6524 (SOIC) TOP VIEW

Ordering Information

DRIVE2

28 VCC

TEMP.

PKG.

PART NUMBER

ISL6524CB*

RANGE (°C)

0 to 70

PACKAGE

28 Ld SOIC

DWG. #

FIX

VID3

27 UGATE

26 PHASE

25 LGATE

24 PGND

23 OCSET

M28.3

ISL6524CBZ*

(See Note)

0 to 70

28 Ld SOIC

(Pb-free)

VID2

VID1

ISL6524CBZA*

(See Note)

0 to 70

28 Ld SOIC

(Pb-free)

M28.3

VID0

VID25

PGOOD

VTTPG

VSEN1

ISL6524EVAL1

Evaluation Board

21 FB

*Add “-T” suffix for tape and reel.

20 COMP

19 VSEN3

18 DRIVE3

17 GND

NOTE: Intersil Pb-free 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.

FAULT/RT 10

VSEN2 11

SS24 12

SS13 13

16 VAUX

15 DRIVE4

VSEN4 14

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

1-888-INTERSIL or 1-888-352-6832 | Intersil (and design) is a registered trademark of Intersil Americas Inc.

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

12 3 4 5 6 7...16

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与ISL6524相关器件

型号	品牌	获取价格	描述	数据表
ISL6524A	INTERSIL	获取价格	VRM8.5 PWM and Triple Linear Power System Controller
ISL6524ACB	INTERSIL	获取价格	VRM8.5 PWM and Triple Linear Power System Controller
ISL6524ACB	RENESAS	获取价格	SWITCHING CONTROLLER, 215kHz SWITCHING FREQ-MAX, PDSO28, PLASTIC, MS-013-AE, SOIC-28
ISL6524ACB-T	INTERSIL	获取价格	VRM8.5 PWM and Triple Linear Power System Controller
ISL6524ACB-T	RENESAS	获取价格	SWITCHING CONTROLLER, 215kHz SWITCHING FREQ-MAX, PDSO28, PLASTIC, MS-013-AE, SOIC-28
ISL6524ACBZ	INTERSIL	获取价格	VRM8.5 PWM and Triple Linear Power System Controller
ISL6524ACBZ	RENESAS	获取价格	VRM8.5 PWM and Triple Linear Power System Controller; SOIC28; Temp Range: 0° to 70
ISL6524ACBZA-T	INTERSIL	获取价格	VRM8.5 PWM and Triple Linear Power System Controller
ISL6524ACBZA-T	RENESAS	获取价格	VRM8.5 PWM and Triple Linear Power System Controller; SOIC28; Temp Range: 0° to 70
ISL6524ACBZ-T	INTERSIL	获取价格	VRM8.5 PWM and Triple Linear Power System Controller

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