EL7556AC

更新时间： 2024-11-05 04:40:27

品牌	Logo	应用领域
ELANTEC		/
页数	文件大小	规格书
13页	249K
描述
Programmable CPU Power Supply Unit

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EL7556AC 数据手册

EL7556AC

Programmable CPU Power Supply Unit

Features

General Description

• EL7556C Pin Compatible

• Improved Temperature and

Voltage Ranges

• 6A Continuous Load Current

• Precision Internal 1% Reference

• 1.0V to 3.8V Output Voltage

• Internal Power MOSFETs

• >90% Efficiency

The EL7556AC is an adjustable synchronous DC:DC switching regu-

lator optimized for a 5V input and 1.0-3.8V output. By combining

integrated NMOS power FETS with a fused-lead package the

EL7556AC can supply up to 6A continuous output current without the

use of external power devices or discrete heat sinks, thereby minimiz-

ing design effort and overall system cost.

On chip resistorless current sensing is used to achieve stable, highly

efficient, current-mode control. The EL7556AC also incorporates the

VCC2DET function to directly interface with the Intel P54 and P55

microprocessors. Depending on the state of VCC2DET the output

voltage is internally preset to 3.50V or a user adjustable voltage using

two external resistors. In both internal and external feedback modes

the active-high PWRGD output indicates when the regulator output is

within ±10% of the programmed voltage. An on-board sensor moni-

tors die temperature (OT) for over-temperature conditions and can be

connected directly to OUTEN to provide automatic thermal shutdown.

Adjustable oscillator frequency and slope compensation allow added

flexibility in overall system design.

• Synchronous Switching

• Adjustable Slope Compensation

• Over Temperature Indicator

• Pulse by Pulse Current Limiting

• Operates up to 1MHz

• 1.5% Typical Output Accuracy

• Adjustable Oscillator w/Sync

• Remote Enable/Disable

• Intel P54 and P55 Compatible

• VCC2DET Interface

• Internal Soft Start

Connection Diagram

Applications

• PC Motherboards

• Local high power CPU supplies

• 5V to 1.0V DC-DC Conversion

• Portable Electronics/Instruments

• P54 and P55 Regulators

100Ω

150Ω

FB1

CREF

FB2 28

CP 27

0.1µF

C 5

1µF

150pF

CSLOPE C2V 26

C11

• GTL+ Bus Power Supply

C8 220pF

68Ω

COSC

VDD

VIN

VSS 25

VHI 24

LX 23

0.22µF

5Ω

C 6 68Ω

Ordering Information

0.1µF

VSSP

VIN

LX 22

Part No

Temp. Range

Package

Outline #

2.5µH

C12

LX 21

EL7556ACM -40°C to +85°C 28-Lead SOIC

MDP0027

OUT

C10

1mF

660µF

0.1µF

VSSP

LX 20

10 VSSP

11 VSSP

12 VSSP

VSSP 19

VSSP 18

TEST 17

1µF

Connect to VSSP for

external feedback

VCC2DET

PWRGD

14 OUTEN

OT 15

EL7556AC

C3, C4, C5, C6, C7 C8 - ceramic

C5, C11 - ceramic or tantalum

C9 - Sprague 594D337X10010R2T 2X330µF

C10 - Sprague 594D337X10010R2T 3X330µF

L1 - Pulse Engineering, PE-53681

D1-D4: BAT54S fast diode

Manufactured under U.S. Patents No. 5,723,974 and No. 5,793,126

Note: All information contained in this data sheet has been carefully checked and is believed to be accurate as of the date of publication; however, this data sheet cannot be a “controlled document”. Current revisions, if any, to these

specifications are maintained at the factory and are available upon your request. We recommend checking the revision level before finalization of your design documentation.

12 3 4 5 6 7...13

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与EL7556AC相关器件

型号	品牌	获取价格	描述	数据表
EL7556ACM	ELANTEC	获取价格	Programmable CPU Power Supply Unit
EL7556B	INTERSIL	获取价格	Integrated Adjustable 6 Amp Synchronous Switcher
EL7556BC	ELANTEC	获取价格	Integrated Adjustable 6 Amp Synchronous Switcher
EL7556BCM	ELANTEC	获取价格	Integrated Adjustable 6 Amp Synchronous Switcher
EL7556BCM	INTERSIL	获取价格	Integrated Adjustable 6 Amp Synchronous Switcher
EL7556BCM-T13	ELANTEC	获取价格	Integrated Adjustable 6 Amp Synchronous Switcher
EL7556BCM-T13	INTERSIL	获取价格	Integrated Adjustable 6 Amp Synchronous Switcher
EL7556CM	ELANTEC	获取价格	Switching Regulator, Current-mode, 9A, 140kHz Switching Freq-Max, PDSO28, SOIC-28
EL7556D	INTERSIL	获取价格	Integrated Adjustable 6 Amp Synchronous Switcher
EL7556DCM	INTERSIL	获取价格	Integrated Adjustable 6 Amp Synchronous Switcher

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