- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄375161 > A8983CJT (Allegro MicroSystems, Inc.) Switches; Leaded Process Compatible:Yes PDF資料下載
參數(shù)資料
| 型號： | A8983CJT |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | Switches; Leaded Process Compatible:Yes |
| 中文描述： | 主軸 |
| 文件頁數(shù)： | 1/2頁 |
| 文件大?。?/td> | 38K |
| 代理商： | A8983CJT |
8983
SPINDLE & VOICE-COIL
ACTUATION MANAGER/DRIVER
DISCONTINUED PRODUCT
Logic Supply Voltage V
CC(D)
6.0 V
Operating Temperature Range,
T
A
......................................
0
°
C to +70
°
C
— FOR REFERENCE ONLY
I
Back-EMF Circuitry Eliminates Hall-Effect Sensors
I
Adaptive Commutation Delay Programmable via Serial Port
I
Programmable Slew Rate (soft switching) Eliminates Snubbers
I
Intrinsic Ground Clamp and Flyback Diodes
and/or forced cooling.
Dwg. PP-060
SPINDLE & VOICE-COIL
ACTUATION MANAGER/DRIVER
The A8983CJT provides for complete spindle and voice coil power
electronics for small form-factor HDDs (hard disk drives). The large-
scale integration and use of advanced DABiC (digital/analog-BiCMOS)
merged technologies result in minimum power dissipation, minimum
The spindle driver system incorporates a three-phase MOS power
driver and a back-EMF sensing motor commutation scheme. A pat-
ented circuit eliminates the need for an external current-sense resistor,
achieving additional headroom. Intrinsic ground clamp and flyback
diodes are also provided.
The voice-coil system incorporates a MOS H-bridge driver, sense
amplifier, error amplifier, and programmable retract circuitry.
The spindle and voice-coil control functions are supplemented by
an E
NERGY
M
ANAGER
, which efficiently channels available spindle
BEMF to protect the heads and the data disk during system power
supply failure. Active regeneration of spindle BEMF provides nearly
lossless conversion of spindle BEMF into supply voltage to operate the
voice coil motor for parking the heads. A dc-to-dc converter provides for
full power MOS r
DS(on)
performance at minimum supply voltages. In
addition, the E
NERGY
M
ANAGER
provides several energy-saving sleep
modes and latched fault states for undervoltage and serial port com-
manded fault.
The A8983CJT is supplied in a 64-lead low-profile quad flatpack for
surface-mount applications.
FEATURES
Voice Coil Motor Driver:
I
Low r
DS(on)
MOS Outputs
I
Zero Deadband
I
Externally Determined Transconductance, with Hi/Lo
Configuration Switched via Serial Port
I
Current Sensing with External Series Sense Resistor
I
Serial Port Programmable Actuator Retract Circuitry
Spindle Motor Controller/Driver:
I
Low r
DS(on)
MOS Outputs
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
ABSOLUTE MAXIMUM RATINGS
at T
A
= +25
°
C
Load Supply Voltage, V
CC(PWR)
............
7.0 V
Spindle Output Current, I
OUT(S)
..........
±
1.6 A
Voice-Coil Output Current, I
OUT(A)
......
±
0.9 A
D
2
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| A92 | TRANSISTOR（ PNP ） |
| A92-TO-92 | TRANSISTOR（ PNP ） |
| A94 | TRANSISTOR（ PNP ） |
| A94-TO-92 | TRANSISTOR（ PNP ） |
| AA1101F | Single Color Right Angle Type (3.0 X 2.0 mm) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| A8-99-111-0167 | 制造商:Southco 功能描述: |
| A8-99-111-0244 | 制造商:Southco 功能描述: |
| A89972-002 | 制造商:TE Connectivity 功能描述:ALIAS=A89972-002,5-1202067-2 - Bulk 制造商:TE Connectivity 功能描述:A89972-002 |
| A89LLD061X | 制造商:Panasonic Industrial Company 功能描述:CRT |
| A89LLD361X | 制造商:Panasonic Industrial Company 功能描述:CRT |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。