8906 Datasheet

IC型號：
8906
PDF描述：
BIDIRECTIONAL 3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER W...
文件大小：
161.11KB
PDF頁數(shù)：
12頁
芯片廠家：
ALLEGRO

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8906

BIDIRECTIONAL 3-PHASE BRUSHLESS DC MOTOR

CONTROLLER/DRIVER WITH BACK-EMF SENSING

LOAD

SUPPLY

C D2

C WD

OUTA

GROUND

OUT B

OUT C

CENTERTAP

BRAKE

C RES

V BB

COMMUTATION

DELAY

C D1

DATA IN

CLOCK

CHIP SELECT

RESET

GROUND

DATA OUT

OSCILLATOR

LOGIC

SUPPLY

SECTOR

DATA

FILTER

Data Sheet

26301.4

SERIAL PORT

BOOST

CHARGE

PUMP

The A8906CLB is a bidirectional three-phase brushless dc motor

controller/driver. The three half-bridge outputs are low on-resistance n-

channel DMOS devices capable of driving up to 1 A. The A8906CLB

provides complete, reliable, self-contained back-EMF sensing motor

startup and running algorithms. A programmable digital frequency-

locked loop speed control circuit together with the linear current control

circuitry provides precise motor speed regulation.

A serial port allows the user to program various features and

modes of operation, such as the speed control parameters, rotational

direction, startup current limit, sleep mode, diagnostic modes, and

others.

The A8906CLB is fabricated in Allegro鈥檚 BCD (Bipolar CMOS

DMOS) process, an advanced mixed-signal technology that combines

bipolar, analog and digital CMOS, and DMOS power devices. The

A8906CLB is provided in a 24-lead wide-body SOIC batwing package.

It provides for the smallest possible construction in surface-mount

applications.

MUX

FLL

VDD

PRELIMINARY INFORMATION

Dwg. PP-040B

FEATURES

ABSOLUTE MAXIMUM RATINGS

at T

= +25

擄

Load Supply Voltage, V

. . . . . . . . . .

14 V

Output Current, I

OUT

. . . . . . . . . . . .

鹵

1.25 A

Logic Supply Voltage, V

. . . . . . . . .

6.0 V

Logic Input Voltage Range,

. . . . . . . . . . .

-0.3 V to V

+ 0.3 V

Package Power Dissipation, P

See Graph

Operating Temperature Range,

. . . . . . . . . . . . . . . . . .

擄

C to +70

擄

Junction Temperature, T

. . . . . . .

+150

擄

C鈥?/div>

Storage Temperature Range,

. . . . . . . . . . . . . . .

-55

擄

C to +150

擄

鈥?Fault conditions that produce excessive junction

temperature will activate device thermal shutdown

circuitry. These conditions can be tolerated, but

should be avoided.

Output current rating may be restricted to a value

determined by system concerns and factors.

These include: system duty cycle and timing,

ambient temperature, and use of any heatsinking

and/or forced cooling. For reliable operation, the

specified maximum junction temperature should

not be exceeded.

DMOS Outputs

Low

DS(on)

Startup Commutation Circuitry

Back-EMF Commutation Circuitry

Direction Control

Serial Port Interface

Frequency-Locked Loop Speed Control

Sector Data Tachometer Signal Input

Programmable Start-Up Current

Diagnostics Mode

Sleep Mode

Linear Current Control

Internal Current Sensing

Dynamic Braking Through Serial Port

Power-Down Dynamic Braking

System Diagnostics Data Out

Data Out Ported in Real Time

Internal Thermal Shutdown Circuitry

(Subject to change without notice)

March 1, 1999

Always order by complete part number, e.g.,

A8906CLB

標(biāo)準(zhǔn)包裝
100
類別
光電元件
家庭
LED - 墊片，支座
系列
-
顏色
黑
長度
0.240"（6.1mm）
LED
三引線
材質(zhì)
PVC
其它名稱
8906K

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描述

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3 Conductor Multi-Conductor Cable Black 16 AWG 250' (76.20m...

89063.35.01
89063.35.0...

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3 Conductor Multi-Conductor Cable Yellow 16 AWG 250' (76.20...

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