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參數(shù)資料
| 型號(hào)： | A8904SLP-T |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, 1.4 A, PDSO28 |
| 封裝： | 1.20 MM HEIGHT, LEAD FREE, TSSOP-28 |
| 文件頁數(shù)： | 1/18頁 |
| 文件大?。?/td> | 736K |
| 代理商： | A8904SLP-T |
Description
The A8904 is a 3-phase brushless DC motor controller/driver
designed for applications where accurate control of high-speed
motors is required. The three half-bridge outputs are low
on-resistance, N-channel DMOS devices capable of driving up
to 1.2A.TheA8904 provides complete, reliable, self-contained
back EMF sensing, motor start-up, 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,
start-up current limit, sleep mode, direction, and diagnostic
modes.
The A8904 is fabricated in the Allegro BCD (Bipolar CMOS
DMOS) process, an advanced mixed-signal technology that
combines bipolar, analog, and digital CMOS, with DMOS
power devices.
The device is provided in a 24-pin wide-body SOIC package,
with 4 internally-fused leads for enhanced thermal dissipation
(package LB), and a thin (<1.2 mm overall height), 28-pin
TSSOP package with an exposed thermal pad Package LP).
Both packages are lead (Pb) free, with 100% matte tin leadframe
plating.
26301.5G
Features and Benefits
Pin-for-pin replacement for A8902CLBA
Start-up commutation circuitry
Sensorless commutation circuitry
Option of external sector data tachometer signal
Option of external speed control
Oscillator operation up to 20 MHz
Programmable overcurrent limit
Transconductance gain options: 500 mA/V or 250 mA/V
Programmable watchdog timer
Directional control
Serial port interface
TTL-compatible inputs
System diagnostics data-out ported in real time
Dynamic braking through serial port or external terminal
3-Phase Brushless DC Motor Controller/Driver
with Back EMF Sensing
Packages:
Functional Block Diagram
Not to scale
A8904
24-pin SOICW
with internally fused pins
(LB package)
28-pin TSSOP
with exposed thermal pad
(Package LP)
CURRENT
CONTROL
CENTERTAP
C WD
OSC
SECTOR
DATA
FILTER
C ST
C RES
BRAKE
OUT A
OUT B
OUTC
COMMUTATION
DELAY
COMMUT
A
TION
LOGIC
C D1
C D2
WATCHDOG
TIMER
BLANK
FCOM
OUT A
OUT B
OUTC
LOAD
SUPPLY
V
BB
CHARGE
PUMP
FREQUENCY-
LOCKED LOOP
SERIAL PORT
MUX
DATA IN
TSD
R
S
VDD
LOGIC
SUPPLY
START-UP
OSC.
BOOST
CHARGE
PUMP
BRAKE
GROUND
SEQUENCE
LOGIC
CHIP
SELECT
CLOCK RESET
DATA OUT
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| A8904SLPTR | 功能描述:IC CTRLR/DRVR DC MOTOR 28TSSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 電機(jī)和風(fēng)扇控制器，驅(qū)動(dòng)器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 應(yīng)用:直流電機(jī)驅(qū)動(dòng)器，步進(jìn)電機(jī)驅(qū)動(dòng)器 評(píng)估套件:- 輸出數(shù):1 或 2 電流 - 輸出:750mA 電壓 - 負(fù)載:10 V ~ 40 V 電源電壓:4.5 V ~ 5.5 V 工作溫度:-20°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-BFSOP（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:24-SOP 包裝:Digi-Reel® 其它名稱:MTS62C19A-HS105DKR |
| A8904SLPTR-T | 功能描述:IC CTRLR/DRVR DC MOTOR 28TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電機(jī)和風(fēng)扇控制器，驅(qū)動(dòng)器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 應(yīng)用:直流電機(jī)驅(qū)動(dòng)器，步進(jìn)電機(jī)驅(qū)動(dòng)器 評(píng)估套件:- 輸出數(shù):1 或 2 電流 - 輸出:750mA 電壓 - 負(fù)載:10 V ~ 40 V 電源電壓:4.5 V ~ 5.5 V 工作溫度:-20°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-BFSOP（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:24-SOP 包裝:Digi-Reel® 其它名稱:MTS62C19A-HS105DKR |
| A8905CLB | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER WITH BACK-EMF SENSING |
| A8906CLB | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:BIDIRECTIONAL 3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER WITH BACK-EMF SENSING |
| A8909CLB | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER WITH BACK-EMF SENSING AND POWER DMOS OUTPUTS |
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