Datasheet > EN5311QI

EN5311QI

更新时间： 2025-07-14 06:57:15

品牌	Logo	应用领域
ENPIRION		稳压器电感器开关输出元件 PC
页数	文件大小	规格书
16页	290K
描述
1A Synchronous Buck Regulator With Integrated Inductor

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中文翻译

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EN5311QI 数据手册

EN5311QI

1A Synchronous Buck Regulator

With Integrated Inductor

RoHS Compliant

Halogen Free

Product Overview

Featuring Integrated Inductor Technology

The Ultra-Low-Profile EN5311QI is targeted to

applications where board area and profile are

critical. EN5311QI is a complete power

conversion solution requiring only two low cost

ceramic MLCC caps. Inductor, MOSFETS,

PWM, and compensation are integrated into a

tiny 5mm x 4mm x 1.1mm QFN package. The

EN5311QI is engineered to simplify design and

V_IN

UVLO

Thermal Limit

Current Limit

ENABLE

Soft Start

P-Drive

N-Drive

Logic

V_OUT

(-)

PWM

Comp

(+)

GND

to minimize layout constraints.

4 MHz

V_SENSE

Sawtooth

Generator

switching frequency and internal type III

compensation provides superior transient

Compensation

Network

response.

With a 1.1 mm profile, the

(-)

Switch

Error

Amp

V_FB

EN5311QI is ideal for space and height

constrained applications.

(+)

DAC

Voltage

Select

VREF

A 3-pin VID output voltage selector provides

seven pre-programmed output voltages along

with an option for external resistor divider.

Output voltage can be programmed on-the-fly

to provide fast, dynamic voltage scaling.

Package Boundry

VS0 VS1 VS2

Product Highlights

• Revolutionary Integrated Inductor

• 5mm x 4mm x1.1mm QFN package

• Very small total solution foot print*

• 4 MHz switching frequency

Typical Application Circuit

ENABLE

V_Sense

V_OUT

V_IN

V_in

V_out

V_FB

4.7μF

10μF

• Only two low cost MLCC caps required

• Designed for low noise/low EMI

• Very low ripple voltage; 5mV_p-pTypical

• High efficiency, up to 95%

V_S0

Voltage

Select

V_S1

V_S2

GND

• Wide 2.4V to 6.6V input range

• 1000mA continuous output current

• Less than 1 μA standby current.

• Excellent transient performance

• 3 Pin VID Output Voltage select

• External divider: 0.6V to V_IN-V_dropout

• 100% duty cycle capable

• Short circuit and over current protection

• UVLO and thermal protection

• RoHS compliant; MSL 3 260°C reflow

Figure 1. Typical application circuit.

Applications

• Area constrained applications

• Noise Sensitive Applications such as A/V

and RF

• LDO replacement for improved thermals

• Set top box/home gateway

• Smart phones, PDAs

• VoIP and Video phones

• Personal Media Players

*Optimized PCB Layout file downloadable from the Enpirion Website to assure first pass design success.

03799

11/24/2009

Rev:B

12 3 4 5 6 7...16

中文翻译

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与EN5311QI相关器件

型号	品牌	获取价格	描述	数据表
EN5311QI-E	ENPIRION	获取价格	1A Synchronous Buck Regulator With Integrated Inductor
EN5311QI-T	INTEL	获取价格	Switching Regulator/Controller, Voltage-mode, 1A, 4000kHz Switching Freq-Max, MQCC20
EN5312Q	ETC	获取价格	Fully Integrated Voltage Mode Synchronous Buck PWM DC-DC Converter Module
EN5312QI	ENPIRION	获取价格	1A Synchronous Buck Regulator With Integrated Inductor
EN5312QI	ALTERA	获取价格	Switching Regulator, Voltage-mode, 1A, 4000kHz Switching Freq-Max, 5 X 4 MM, 1.10 MM HEIGH
EN5312QI	INTEL	获取价格	元器件封装:20-QFN;
EN5319QI	INTEL	获取价格	Switching Regulator, Voltage-mode, 1.5A, CMOS, 4 X 6 MM, 1.10 MM HEIGHT, HALOGEN FREE AND
EN5319QI	ALTERA	获取价格	Switching Regulator, Voltage-mode, 1.5A, CMOS, 4 X 6 MM, 1.10 MM HEIGHT, HALOGEN FREE AND
EN5322QI	ENPIRION	获取价格	2 A Voltage Mode Synchronous Buck PWM DC-DC Converter with Integrated Inductor
EN5322QI	INTEL	获取价格	最小工作电压(V):2.4V;最大工作电压(V):5.5V;最大输出电流(A):2A;元器

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