Datasheet > EL7551CU-T13

EL7551CU-T13

更新时间： 2024-11-04 22:09:35

品牌	Logo	应用领域
英特矽尔 - INTERSIL		稳压器
页数	文件大小	规格书
9页	150K
描述
Monolithic 1Amp DC:DC Step-down Regulator

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EL7551CU-T13 数据手册

EL7551

Data Sheet

January 24, 2002

FN7291

Monolithic 1Amp DC:DC Step-down

Regulator

Features

• Integrated synchronous MOSFETs and current mode

controller

The EL7551 is an integrated,

synchronous step-down regulator with

output voltage adjustable from 1.0V to

• 1A continuous output current

• Up to 95% efficiency

3.8V. It is capable of delivering 1A continuous current at up

to 95% efficiency. The EL7551 operates at a constant

frequency pulse width modulation (PWM) mode, making

external synchronization possible. Patented on-chip

resistorless current sensing enables current mode control,

which provides cycle-by-cycle current limiting, over-current

protection, and excellent step load response. The EL7551 is

available in a fused-lead 16-pin QSOP package. With proper

external components, the whole converter fits into a less

• 4.5V to 5.5V input voltage

• Adjustable output from 1V to 3.8V

• Cycle-by-cycle current limit

• Precision reference

• ±0.5% load and line regulation

• Adjustable switching frequency to 1.2MHz

• Oscillator synchronization possible

• Internal soft start

than 0.4 in area. The minimal external components and

small size make this EL7551 ideal for desktop and portable

applications.

The EL7551 is specified for operation over the -40°C to

+85°C temperature range.

• Over temperature protection

• Under voltage lockout

• 16-pin QSOP package

Pinout

EL7551

(16-PIN QSOP)

TOP VIEW

Applications

• DSP, CPU Core and IO Supplies

• Logic/Bus Supplies

• Portable Equipment

SGND PGND 16

C3 C4

0.1µF 270pF

• DC:DC Converter Modules

• GTL + Bus Power Supply

COSC

VDD

PGND

VIN

VREF 15

FB 14

0.1µF

39Ω

2.37kΩ

1kΩ

VDRV 13

LX 12

10µH

Ordering Information

(3.3V,1A)

10µF

ceramic

47µF

LX 11

0.1µF

PART NUMBER

PACKAGE TAPE & REEL

PKG. NO.

MDP0040

VIN

VHI 10

(4.5V-5.5V)

EL7551CU

16-Pin QSOP

PGND 9

EL7551CU-T7

EL7551CU-T13

7”

13”

Manufactured under U.S. Patent No. 57,323,974

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...9

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EL7554IREZ	INTERSIL	获取价格	Monolithic 4 Amp DC-DC Step-Down Regulator

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