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參數(shù)資料
| 型號： | L6243D |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 運(yùn)動控制電子 |
| 英文描述： | VOICE COIL MOTOR CONTROLLER, 2.5 A, PDSO28 |
| 封裝： | SO-28 |
| 文件頁數(shù)： | 9/12頁 |
| 文件大?。?/td> | 2162K |
| 代理商： | L6243D |
FUNCTIONAL DESCRIPTION (continued)
Function
Description
VCC input
This is the Power Supply input.
POWER FAIL
THRESH
Input for the VCC supply monitor. The Threshold can be externally set via a voltage divider.
VCC SENSE OUT
Output
TTL compatible signal indicating the VCC supply has dropped below the POWER FAIL
THRESHOLD.
LOGIC SUPPLY
SENSE input
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.
5V FILTER input
This pin allows for the application of filter circuitry in order to avoid false triggering.
PARK POWER
input
This input is used during the Power Down/Power Fail Parking operation. When the supply goes
down, a typical Spindle Driver 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 rectified and filtered across an external PARKING
CAPACITOR.
PROGRAMMABLE
PARK VOLTAGE
input
Used to set the voltage applied to the VCM during an Automatic Parking Operation.
PARK
input
Logic signal asserted low, activates parking.
POWER ON
RESET output
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.
POWER ON
RESET DELAY
input
The intent of 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 in the PARK
mode.
Once the delay has timed out, the POWER ON RESET will 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.
WRITE DISABLE
output
Becomes asserted a few microseconds prior to the assertion of POWER ON RESET.
Internal 30k Pullup to LSS.
ENABLE
input
This signal originates 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 parking operation is automatic and takes priority over the
ENABLE function. Only at the end of the POWER ON RESET DELAY will the ENABLE input
become active. If active parking is desired, it will be accomplished under control of the VIN
signal, otherwise it is an automatic function at power down.
VREF input
The reference voltage input is basically that voltage, at which the output current is zero.
ERROR AMP IN
input
Inverting input of error amplifier. The non inverting one is internally tied to Vref.
Open collector output.
ERROR AMP OUT
output
Error amplifier output pin.
OUTPUT A power
output
Voice Coil power output.
OUTPUT B power
output
Voice Coil power output.
SENSE AMP IN
A/B
signal input
Sense amplifier input pins. The sense resistor is connected across these pins.
SENSE AMP OUT
signal output
Output pin of sense amplifier.
AMPOUT
output
Output of an internal op-amp for general application.
AMP+ input
General purpose op-amp non inverting input.
AMP- input
General purpose op-amp inverting input.
L6243-L6243D
6/12
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PDF描述 |
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| L6245 | VOICE COIL MOTOR CONTROLLER, 1.5 A, PQFP64 |
| L6254 | DISK DRIVE MOTOR CONTROLLER, 2.1 A, PQFP44 |
| L6258E | STEPPER MOTOR CONTROLLER, 1.5 A, PDSO36 |
| L6275 | VOICE COIL MOTOR CONTROLLER, 2.1 A, PQFP44 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6243DS | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:VOICE COIL MOTOR DRIVER |
| 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:STMicroelectronics 功能描述:5V HARD DISK DRIVE POWER COMBO |
| L6246 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:12V VOICE COIL MOTOR DRIVER |
| L624F | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:THYRISTOR MODULE|BRIDGE|HALF-CNTLD|CA|480V V(RRM)|42.5A I(T) |
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