參數(shù)資料
型號(hào)： L6254
廠商： 意法半導(dǎo)體
英文描述： 12V DISK DRIVE SPINDLE & VCM, POWER & CONTROL “COMBO”
中文描述： 12V的磁盤驅(qū)動(dòng)器主軸
文件頁(yè)數(shù)： 1/17頁(yè)
文件大?。?/td> 109K
代理商： L6254
GENERAL
12V (
±
10%) OPERATION.
REGISTERBASED ARCHITECTURE
MINIMUMEXTERNAL COMPONENTS
BICMOS+ VERTICAL DMOS(1.5mm)
VCM DRIVER
1.5ADRIVECAPABILITY
0.9WTOTAL BRIDGE IMPEDANCE AT 25
°
C
LINEARMODE
PHASESHIFT MODULATION(PWM MODE)
INSTANTANEOUS, (GLICH FREE) SWITCH
BETWEEN THE 2 MODES
CLASS ABOUTPUT DRIVERS
ZEROCROSSOVERDISTORSION
14 BIT DAC DEFINE OUTPUT CURRENT
SELECTABLETRANSCONDUCTANCE
4 PROGRAMMABLEPARKINGVOLTAGE
DYNAMICBRAKE
SPINDLE DRIVER
2.0ADRIVECAPABILITY
0.8WTOTAL BRIDGE IMPEDANCE AT 25
°
C
BEMF, INTERNAL OR EXTERNAL, PROC-
ESSING
SENSOR-LESSMOTOR COMMUTATION
PROGRAMMABLE COMMUTATION PHASE
DELAY
LINEAR MODE AND CONSTANT TOFF PWM
OPERATIONMODE
INTERNAL FREQUENCY LOCKED LOOP
SPEED CONTROL (FLL)
BEMFRECTIFICATION DURINGRETRACT
BUILT-IN ALIGNAMENT&GOSTART-UP
INDUCTIVE SENSINGSTART UP OPTION
RESYNCHRONIZATION
DYNAMIC& REVERSEBRAKE
CONTROLLABLE OUTPUT SLEW RATE
OTHER FUNCTIONS
12V AND 5V MONITORINGWITH EXTERNAL
SET TRIPPOINTS AND HYSTERESIS
POWERUP/DOWN SEQUENCING
LOW VOLTAGESENSE
SLUG FOR POWERDISSIPATION
THERMAL SHUTDOWN AND PRETHERMAL
WARNING
DESCRIPTION
The L6254 integratesinto a single chip both spin-
dle and VCM controllers as well as power stages.
The device is designed for 12V diskdrive applica-
tion requiring up to 2.0A of spindle and 1.5A of
VCM peak currents.
A serialport with up to 25 MHz capabilityprovides
easy interface to the microprocessor. A register
controlled Frequency Locked Loop (FLL) allows
flexibility in setting the spindle speed. Integrated
BEMF processing, digital masking, digital delay,
and sequencingminimize the number of external
componentsrequired.
Power On Reset (POR) circuitry is included.Upon
detection of a low voltage condition, POR is as-
serted, the internal registers are reset, and spin-
dle power circuitry is tri-stated.The BEMF is recti-
fied
providing power for
followed by dynamicspindle braking.
The device is built in BICMOS technology allow-
ing dense digital/analog circuitry to be combined
with a highpower DMOS outputstage.
actuator retraction
This is preliminary information on a new product now in development. Details are subject to change without notice.
April 1999
TQFP44 (10x10mm)
ORDERING NUMBER: L6254
L6254
12V DISK DRIVE SPINDLE & VCM, POWER
& CONTROL“COMBO”
PRODUCT PREVIEW
BICMOS TECHNOLOGY
1/17
相關(guān)PDF資料
PDF描述
L6256 12V COMBO
L6258E PWM CONTROLLED - HIGH CURRENT DMOS UNIVERSAL MOTOR DRIVER
L6258EX PWM CONTROLLED - HIGH CURRENT DMOS UNIVERSAL MOTOR DRIVER
L6260 4.5 - 5.5V DISK DRIVER SPINDLE & VCM, POWER & CONTROL COMBO’S
L6268 12V DISK DRIVE SPINDLE & VCM, POWER & CONTROL “COMBO”
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L6256 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:12V COMBO
L6258 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:PWM controlled high current DMOS universal motor driver
L6258_07 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:PWM controlled high current DMOS universal motor driver
L6258A 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Stepper Motor Controller/Driver
L6258E 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 Dual Full Bridge RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube
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