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參數(shù)資料
| 型號： | L6275 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 5V DISK DRIVE SPINDLE & VCM, POWER & CONTROL “COMBO” |
| 中文描述： | 5V的磁盤驅(qū)動器主軸 |
| 文件頁數(shù)： | 1/17頁 |
| 文件大?。?/td> | 109K |
| 代理商： | L6275 |
GENERAL
5V (+/-10%) OPERATION.
REGISTERBASED ARCHITECTURE
MINIMUMEXTERNAL COMPONENTS
BICMOS+ VERTICAL DMOS(1.5mm)
VCM DRIVER
1.5ADRIVECAPABILITY
0.9
TOTAL BRIDGEIMPEDANCE AT 25
°
C
LINEARMODE
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
0.8
TOTAL BRIDGEIMPEDANCE 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
5V MONITORING WITH EXTERNAL SET
TRIPPOINTSAND HYSTERESIS
POWERUP/DOWN SEQUENCING
LOW VOLTAGESENSE
3.3V INPUTLOGICCOMPATIBILITY
THERMAL SHUTDOWN AND PRETHERMAL
WARNING
SYSTEM CLOCK WATCHDOG
DESCRIPTION
The L6275 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: L6275
L6275
5V DISK DRIVE SPINDLE & VCM, POWER
& CONTROL“COMBO”
PRODUCT PREVIEW
BICMOS TECHNOLOGY
1/17
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6278-1.2 | 制造商:STMicroelectronics 功能描述:ELECTRONIC COMPONENT |
| L6280 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:THREE CHANNELS MULTIPOWER DRIVER SYSTEM |
| L6281B12D | 制造商:ST MICRO 功能描述:New |
| L6282-3.2E | 制造商:STMicroelectronics 功能描述:L6282-3.2E |
| L6283-1.2 | 制造商:STMicroelectronics 功能描述:ELECTRONIC COMPONENT |
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