Datasheet > ISL6537ACR-T

ISL6537ACR-T

更新时间： 2024-10-25 22:57:23

品牌	Logo	应用领域
英特矽尔 - INTERSIL		稳压器开关双倍数据速率控制器
页数	文件大小	规格书
15页	485K
描述
ACPI Regulator/Controller for Dual Channel DDR Memory Systems

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ISL6537ACR-T 数据手册

ISL6537A

Data Sheet

February 9, 2005

FN9143.3

ACPI Regulator/Controller for

Features

Dual Channel DDR Memory Systems

• Generates 5 Regulated Voltages

- Synchronous Buck PWM Controller for DDR V

- 3A Integrated Sink/Source Linear Regulator with

Accurate VDDQ/2 Divider Reference for DDR V

- PWM Regulator for GMCH Core

- LDO Regulator for CPU/GMCH V Termination

- LDO Regulator for DAC

The ISL6537A provides a complete ACPI compliant power

solution for up to 4 DIMM dual channel DDR/DDR2 Memory

systems. Included are both a synchronous buck controller to

DDQ

supply V

DDQ

during S0/S1 and S3 states. During S0/S1 state,

a fully integrated sink-source regulator generates an accurate

(V /2) high current V voltage without the need for a

DDQ

negative supply. A buffered version of the V

/2 reference is

. A second PWM controller, which requires

DDQ

• ACPI compliant sleep state control

• Glitch-free Transitions During State Changes

provided as V

REF

external MOSFET drivers, is available for regulation of the

GMCH Core voltage. An LDO controller is also integrated for

• Integrated V

Buffer

REF

the CPU V termination voltage regulation and the DAC.

• V

PWM Controller Drives Low Cost N-Channel

DDQ

The switching PWM controller drives two N-Channel

MOSFETs in a synchronous-rectified buck converter

topology. The synchronous buck converter uses voltage-

mode control with fast transient response. The switching

regulator provides a maximum static regulation tolerance of

±2% over line, load, and temperature ranges. The output is

user-adjustable by means of external resistors down to 0.8V.

MOSFETs

• 250kHz Constant Frequency Operation

- Both PWM controllers are Phase Shifted 180°

• Tight Output Voltage Regulation

- All Outputs: ±2% Over Temperature

• Fully-Adjustable Outputs with Wide Voltage Range: Down

to 0.8V supports DDR and DDR2 Specifications

An integrated soft-start feature brings all outputs into

regulation in a controlled manner when returning to S0/S1

state from any sleep state. During S0 the VIDPGD signal

• Simple Single-Loop Voltage-Mode PWM Control Design

• Fast PWM Converter Transient Response

• Under and Overvoltage Monitoring

indicates that the GMCH and CPU V termination voltage

is within spec and operational.

• OCP on the V

DDQ

• Integrated Thermal Shutdown Protection

• Pb-Free Available (RoHS Compliant)

Switching Regulator

All outputs, except VDAC, have undervoltage protection.

The switching regulator also has overvoltage and

overcurrent protection. Thermal shutdown is integrated.

Pinout

ISL6537A (QFN)

Applications

TOP VIEW

•

Single and Dual Channel DDR Memory Power Systems in

ACPI compliant PCs

•

28 27 26 25 24 23 22

Graphics cards - GPU and memory supplies

• ASIC power supplies

5VSBY

DRIVE3

FB3

• Embedded processor and I/O supplies

• DSP supplies

S3#

P12V

PWM4

GND

18 FB4

Ordering Information

TEMP. RANGE

PKG. DWG.

L28.6x6

DDR_VTT

VDDQ

COMP4

PART NUMBER

(°C)

PACKAGE

28 Ld 6x6 QFN

16 COMP

15 FB

ISL6537ACR

0 to 70

ISL6537ACRZ

(See Note)

28 Ld 6x6 QFN

(Pb-free)

10 11 12 13 14

*Add “-T” suffix to part number for tape and reel packaging.

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.

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

1-888-INTERSIL or 321-724-7143 | 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...15

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ISL6537ACR-T 替代型号

型号	品牌	替代类型	描述	数据表
ISL6537ACRZ-T	INTERSIL	类似代替	ACPI Regulator/Controller for Dual Channel DDR Memory Systems
ISL6537ACRZ	INTERSIL	类似代替	ACPI Regulator/Controller for Dual Channel DDR Memory Systems
ISL6537ACR	INTERSIL	类似代替	ACPI Regulator/Controller for Dual Channel DDR Memory Systems

与ISL6537ACR-T相关器件

型号	品牌	获取价格	描述	数据表
ISL6537ACRZ	INTERSIL	获取价格	ACPI Regulator/Controller for Dual Channel DDR Memory Systems
ISL6537ACRZA	INTERSIL	获取价格	ACPI Regulator/Controller for Dual Channel DDR Memory Systems
ISL6537ACRZA	RENESAS	获取价格	3.3A DUAL SWITCHING CONTROLLER, 280kHz SWITCHING FREQ-MAX, PQCC28, 6 X 6 MM, ROHS COMPLIAN
ISL6537ACRZA-T	RENESAS	获取价格	3.3A DUAL SWITCHING CONTROLLER, 280kHz SWITCHING FREQ-MAX, PQCC28, 6 X 6 MM, ROHS COMPLIAN
ISL6537ACRZ-T	INTERSIL	获取价格	ACPI Regulator/Controller for Dual Channel DDR Memory Systems
ISL6537ACRZ-TR5160	RENESAS	获取价格	Dual Switching Controller
ISL6537CR	INTERSIL	获取价格	ACPI Regulator/Controller for Dual Channel DDR Memory Systems
ISL6537CR-T	INTERSIL	获取价格	ACPI Regulator/Controller for Dual Channel DDR Memory Systems
ISL6537CRZ	INTERSIL	获取价格	ACPI Regulator/Controller for Dual Channel DDR Memory Systems
ISL6537CRZ-T	INTERSIL	获取价格	ACPI Regulator/Controller for Dual Channel DDR Memory Systems

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