Datasheet > AAT2687

AAT2687

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
ANALOGICTECH		转换器集成电源管理电路
页数	文件大小	规格书
20页	3577K
描述
PMIC Solution for 24V Systems with 2 High Performance Step-Down Converters

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AAT2687 数据手册

PRODUCT DATASHEET

AAT2687

SystemPower

PMIC Solution for 24V Systems with 2 High Performance Step-Down Converters

General Description

Features

•

The AAT2687 provides two independently regulated DC

outputs; consisting of a high voltage step-down regula-

tor and a low input voltage low dropout (LDO) regulator.

The PMIC is optimized for low-cost 12V adapter inputs,

making the device the ideal system-on-a-chip power

solution for consumer communications equipment.

2-Output Step-Down Converters:

Channel 1 Step-Down: V_IN1= 6V to 24V

▪

•

V_OUT1Adjustable from 1.5V to 5.5V

I_OUT1up to 4.5A

High Switching Frequency

Voltage Mode Control

PWM Fixed Frequency for Low-Ripple

Channel 1 is a step-down regulator with an input voltage

range 6.0 to 24V, providing up to 4.5A output current.

490kHz fixed switching frequency allows small L/C filter-

ing components. Channel 1 utilizes voltage mode control

configured for optimum performance across the entire

output voltage and load range.

Channel 2 (LDO): V_IN2= 2.7V to 5.5V

▪

•

I_OUT2up to 600mA

1V Dropout Voltage at 600mA

High Accuracy ±1.5%

•

Small Solution Size

System On a Chip

Ultra-small External L/C

Shutdown Current <35μA

▪

Channel 2 is a low-dropout (LDO) regulator providing up

to 600mA output current. The device provides extremely

low output noise, low quiescent current and excellent

transient response.

•

Independent Enable Pins

Programmable Over-Current Protection

Over-Temperature Protection

Internal Soft Start

4x5mm 24-Pin TQFN Low Profile Thermally Enhanced

Package

The controller includes integrated cycle-by-cycle over-

current protection, soft-start and over-temperature dis-

able features. Independent input and enable pins pro-

vide maximum design flexibility.

•

-40°C to 85°C Temperature Range

The AAT2687 is available in the Pb-free, 4x5mm 24-pin

TQFN package. The rated operating temperature range is

-40°C to 85°C.

Applications

•

DSL and Cable Modems

Notebook Computers

Satellite Settop Box

Wireless LAN Systems

Typical Application

V_OUT1

3.3V/4.5A

LX1

4.7µH 5.3A

0.1µF

BST

C10

R2 C4

2k 220nF

8.87k

2.2nF

BAS16

VL1

IN1

450

RS1

OS1

C14

2.2µF

V_IN1

6.0V - 24.0V

22µF 22µF 22µF

FB1

COMP1

2.2nF

3.92K

AAT2687

150pF

1.8V/600mA

EN1

1.96k

OUT2

IN2

V_OUT2

V_IN2

C12

2.2µF

C13

2.2µF

220µF 1µF

EN2 GND

25V

TQFN45-24

w w w . a n a l o g i c t e c h . c o m

2687.2008.06.1.0

12 3 4 5 6 7...20

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与AAT2687相关器件

型号	品牌	描述	获取价格	数据表
AAT2687IFK-AI-T1	ANALOGICTECH	PMIC Solution for 24V Systems with 2 High Performance Step-Down Converters	获取价格
AAT2688	ANALOGICTECH	4.5A PMIC Solution for 12V Adapter Systems with 2-Output High Performance Step-Down Conver	获取价格
AAT2688IFK-AI-T1	ANALOGICTECH	4.5A PMIC Solution for 12V Adapter Systems with 2-Output High Performance Step-Down Conver	获取价格
AAT2689	ANALOGICTECH	PMIC Solution for 12V Adapter Systems with 2-Output High Performance Step-Down Converters	获取价格
AAT2689IRN-AI-T1	ANALOGICTECH	PMIC Solution for 12V Adapter Systems with 2-Output High Performance Step-Down Converters	获取价格
AAT2713	ANALOGICTECH	Low Noise Dual 600mA Step-Down Converter with Synchronization	获取价格

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