Datasheet > A8585

A8585

更新时间： 2022-02-26 11:16:34

品牌	Logo	应用领域
急速微 - ALLEGRO		/
页数	文件大小	规格书
35页	3628K
描述
Automotive AEC-Q100 qualified

阅读下载

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

A8585 数据手册

A8585

Wide Input Voltage, 2 A Buck

Regulator Family with Low IQ Mode

Description

Features and Benefits

The A8585 family is designed to provide the power supply

requirements of next generation car audio and infotainment

systems. The A8585 family provides all the control and

protection circuitry to produce a high current regulator with

±1.0% output voltage accuracy.

• Automotive AEC-Q100 qualified

• Withstands surge input to 40 VIN for load dump

• Operates down to 3.4 VIN (typ), 3.6 VIN (max) for idle

stop

• Utilizes pulse frequency modulation (PFM) for low IQ

mode

In PWM mode, the A8585 family employs current mode

control to provide simple compensation, excellent stability,

and fast transient response. In Low IQ mode, the A8585

family employs pulse frequency modulation (PFM) to draw

less than 33 µA from 12 V_INwhile supplying 5.0 V/40 µA.

When operational, theA8585 family operates down to at least

3.6V_IN(V_INfalling).TheselectableSleepmodefeatureallows

for very low standby current.

• Function options:

–Selectable PWM / Low IQ PFM mode, or

–ꢀSelectableꢀ10ꢀμAꢀSleepꢀmodeꢀ(automaticꢀPWMꢀ/ꢀLowꢀIQꢀ

PFM mode selection)

• Fixed output voltage options: 3.3 V or 5 V with ±1.0%

accuracy

• Delivers up to 2.0 A of output current

•ꢀIntegratedꢀ110ꢀmΩꢀhigh-sideꢀMOSFET

• Adjustable switching frequency from 300 to 550 kHz (to

605 kHz with sync)

• EMI Reduction Features:

–Frequency dithering

–Controlled switching node

• External synchronization capability

Features of the A8585 family include a programmable PWM

switching frequency. The regulator switching frequency can

be synchronized to an external clock. The A8585 has external

compensation to optimize stability and transient response for

a wide range of external components and applications. The

A8585 has a fixed soft start time of 5 ms.

Continued on the next page…

Package: 10-pin SOIC with exposed

thermal pad (suffix LK)

Applications:

• Automotive:

▫ꢀInstrumentꢀClusters

▫ꢀAudioꢀSystems

▫ꢀNavigation

• Home audio

• Network and telecom

• Industrial

▫ꢀHVAC

Not to scale

Typical Application Diagram

L_O

V_OUT

V_IN

VIN

C_BOOT

2 A/40 V

C_IN

C_O

47 nF

VIN

A8585-x

[A8585-2, -3

only]

BOOT

VOUT

GND

PWM/PFM [A8585, -1]

EN/SLEEP [A8585-2, -3]

R_PU

SYNC

R_FSET

FSET /SYNC_PWM

NPOR

COMP

C_P

R_Z

See table 2 for recommended component values

C_Z

A8585-DS

12 3 4 5 6 7...35

下载PDF

与A8585相关器件

型号	品牌	描述	获取价格	数据表
A8585KLKTR-1-T	ALLEGRO	Automotive AEC-Q100 qualified	获取价格
A8585KLKTR-2-T	ALLEGRO	Automotive AEC-Q100 qualified	获取价格
A8585KLKTR-3-T	ALLEGRO	Automotive AEC-Q100 qualified	获取价格
A8585KLKTR-T	ALLEGRO	Automotive AEC-Q100 qualified	获取价格
A8586	ALLEGRO	Output voltage adjustable from 0.8 to 30 V	获取价格
A8586-1	ALLEGRO	Output voltage adjustable from 0.8 to 30 V	获取价格