AAT2687IFK-AI-T1 Datasheet

IC型號(hào)：
AAT2687IFK-AI-T1
PDF描述：
PMIC Solution for 24V Systems with 2 High Performance Step-D...
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ANALOGICTECH

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PRODUCT DATASHEET

AAT2687

SystemPower

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

Features

鈥?2-Output Step-Down Converters:

鈻?/div>

Channel 1 Step-Down: V

IN1

= 6V to 24V

鈥?V

OUT1

Adjustable from 1.5V to 5.5V

鈥?I

OUT1

up to 4.5A

鈥?High Switching Frequency

鈥?Voltage Mode Control

鈥?PWM Fixed Frequency for Low-Ripple

鈻?/div>

Channel 2 (LDO): V

IN2

= 2.7V to 5.5V

鈥?I

OUT2

up to 600mA

鈥?1V Dropout Voltage at 600mA

鈥?High Accuracy 鹵1.5%

鈥?Small Solution Size

鈻?/div>

System On a Chip

鈻?/div>

Ultra-small External L/C

鈥?Shutdown Current <35渭A

鈥?Independent Enable Pins

鈥?Programmable Over-Current Protection

鈥?Over-Temperature Protection

鈥?Internal Soft Start

鈥?4x5mm 24-Pin TQFN Low Profile Thermally Enhanced

Package

鈥?-40擄C to 85擄C Temperature Range

General Description

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.

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 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.

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.

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

TQFN package. The rated operating temperature range is

-40擄C to 85擄C.

Applications

鈥?/div>

DSL and Cable Modems

Notebook Computers

Satellite Settop Box

Wireless LAN Systems

Typical Application

0.1碌F

BAS16

C14

2.2碌F

LX1

BST

VL1

RS1

OS1

IN1

FB1

3.92K

2.2nF

R2 C4

2k 220nF

4.7碌H 5.3A

C10

2.2nF

450

8.87k

22碌F 22碌F 22碌F

OUT1

3.3V/4.5A

IN1

6.0V - 24.0V

COMP1

AAT2687

EN1

IN2

220碌F

25V

C13

1碌F

25V

2.2碌F

IN2

OUT2

C12

2.2碌F

EN2 GND

TQFN45-24

OUT2

150pF

1.96k

1.8V/600mA

2687.2008.06.1.0

www.analogictech.com

現(xiàn)有數(shù)量
0現(xiàn)貨
價(jià)格
停產(chǎn)
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-
包裝
卷帶（TR）
產(chǎn)品狀態(tài)
停產(chǎn)
拓?fù)?/label>
降壓同步（1），線(xiàn)性（LDO）（1）
輸出數(shù)
2
頻率 - 開(kāi)關(guān)
490kHz
電壓/電流 - 輸出 1
1.5V ~ 5.5V，4.5A
電壓/電流 - 輸出 2
1.8V，600mA
電壓/電流 - 輸出 3
-
帶 LED 驅(qū)動(dòng)器
無(wú)
帶監(jiān)控器
無(wú)
帶定序器
無(wú)
電壓 - 供電
2.7V ~ 24V
工作溫度
-40°C ~ 85°C
安裝類(lèi)型
表面貼裝型
封裝/外殼
24-WFQFN 裸露焊盤(pán)
供應(yīng)商器件封裝
24-TQFN（4x5）

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