- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄383236 > L6243DS (意法半導(dǎo)體) VOICE COIL MOTOR DRIVER PDF資料下載
參數(shù)資料
| 型號(hào)： | L6243DS |
| 廠商： | 意法半導(dǎo)體 |
| 元件分類(lèi)： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | VOICE COIL MOTOR DRIVER |
| 中文描述： | 音圈電機(jī)驅(qū)動(dòng) |
| 文件頁(yè)數(shù)： | 6/12頁(yè) |
| 文件大小： | 113K |
| 代理商： | L6243DS |
FUNCTIONAL DESCRIPTION
(continued)
Function
V
CC
input
POWER FAIL
THRESH
V
CC
SENSE OUT
Output
LOGIC SUPPLY
SENSE input
Description
This is the Power Supply input.
Input for the V
CC
supply monitor. The Threshold can be externally set via a voltage divider.
TTL compatible signal indicating the V
CC
supply has dropped below the POWER FAIL
THRESHOLD.
This input is used to monitor the Five Volt Logic Supply for the external control and other support
IC’s. The LOGIC SUPPLY SENSE operates independently of the 12V Power Supply. When a
5V supply failure is detected a POWER ON RESET is generated.
This pin allows for the application of filter circuitry in order to avoid false triggering.
This input is used during the Power Down/Power Fail Parking operation. When the supply goes
down, a typical SpindleDriver Circuit automatically tristates its output stages. During this time
the spindle motor spins freely and the stored energy is used to drive the VCM to the park
position. The generated BEMF is rectifiedand filtered across an external PARKING
CAPACITOR.
Used to set the voltage applied to the VCM during an Automatic Parking Operation.
5V FILTER input
PARK POWER
input
PROGRAMMABLE
PARK VOLTAGE
input
PARK
POWER ON
RESET output
POWER ON
RESET DELAY
input
input
Logic signal asserted low, activatesparking.
Indicates an error condition to the external control and support circuitry. A Logic Supply Fail
condition automatically initiates a POWER ON RESET. Internal 30k Pullup to LSS.
The intentof this input is to provide a time delay at power up. During this time, the POWER ON
RESET line will be asserted (low).A POWER ON RESET, will hold the system inthe PARK
mode.
Once the delay has timed out, the POWER ON RESETwill be removed to allow the
external system to assume control. When applied in a Disk Drive Application, the POWER ON
RESET DELAY will be required to have a minimum duration which will ensure that the
Read/Write Heads can be fully parked.
Becomes asserted a few microseconds prior to the assertion of POWER ON RESET.
Internal 30k Pullup to LSS.
This signaloriginates at the external controller and, when asserted, allows the VCM Drivers to
operate. When deasserted the VCM Driver is forced into Tristate mode. During a POWER ON
RESET condition however, the parkingoperation is automatic and takes priority over the
ENABLE function. Only at the end of the POWER ON RESETDELAY will the ENABLE input
become active. If active parking is desired, it will be accomplished under control of the V
IN
signal, otherwise it is an automatic function at power down.
The reference voltage input is basically that voltage, at which the output current is zero.
Inverting input of erroramplifier. The non invertingone is internallytied to V
ref
.
Open collector output.
Error amplifier output pin.
WRITE DISABLE
output
ENABLE
input
V
REF
input
ERROR AMP IN
input
ERROR AMP OUT
output
OUTPUT A power
output
OUTPUT B power
output
SENSE AMP IN
A/B
signal input
SENSE AMP OUT
signal output
AMPOUT
AMP+ input
AMP- input
Voice Coil power output.
Voice Coil power output.
Sense amplifier input pins. The sense resistor is connected across these pins.
Output pin of sense amplifier.
output
Output of an internalop-amp for general application.
General purpose op-amp non inverting input.
General purpose op-amp inverting input.
L6243-L6243D
6/12
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| L6245 | 5V HARD DISK DRIVE POWER COMBO |
| L6246 | 12V VOICE COIL MOTOR DRIVER |
| L6254 | 12V DISK DRIVE SPINDLE & VCM, POWER & CONTROL “COMBO” |
| L6256 | 12V COMBO |
| L6258E | PWM CONTROLLED - HIGH CURRENT DMOS UNIVERSAL MOTOR DRIVER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6244923 | 制造商: 功能描述: 制造商:undefined 功能描述: |
| L6245 | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:5V HARD DISK DRIVE POWER COMBO |
| L6246 | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:12V VOICE COIL MOTOR DRIVER |
| L624F | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:THYRISTOR MODULE|BRIDGE|HALF-CNTLD|CA|480V V(RRM)|42.5A I(T) |
| L625 | 制造商:Lufkin 功能描述:25' Ultralok Tape Measure 制造商:Lufkin 功能描述:LUFKIN 25 FEET ULTRALOK TAPE MEASURE, COLOR: HI-VIZ ORANGE, WIDTH: 1 , FEATURES: ONE PIECE SLIDE LOCK HOLDS BLADE FIRMLY AT ANY LENGTH, BUILT-IN SHOCK ABSORBER CUSHIONS BLADE RETURN & PROTECTS END HOOK, FEET, INCH MARKS & STUD MARKIN |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。