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MFG:ST Package Cooled:PLCC
Part Number: L6243
MFG: ST
Package Cooled: PLCC
Description: The L6243/D is a Bipolar IC developed for use in Hard Disk Head Actuator positioning applications. The...
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L6243
-
Suppliers
DataSheet
General Description
L6243 General Description
The L6243/D is a Bipolar IC developed for use in Hard Disk Head Actuator positioning applications. The Power Op-Amp Output Bridge, Differential Amplifier, and Error Amplifier, are controlled by TTL/CMOS, input compatible, Digital Logic, and an Analog Current Control Voltage. A simple RC compensation network, tied to the output of the Error Amp, will configure the system to work as a Transconductance Amplifier to drive a Voice Coil Motor in LinearMode.
Additional features include Power On Reset Delay, Enable and Park, as well as a general purpose Operational Amplifier. A logic low at the Park input activates the parking function. Holding the Enable input low will disable the device by forcing the outputs into a tristate mode. Power Fail Monitors for the logic and power supplies initiate an automatic parking sequence during a power failure. A resistor programmed parking voltage enables a constant velocity head retract.
L6243 Maximum Ratings
|
Symbol |
Parameter |
Value |
Unit |
|
VS |
Supply Voltage |
18 |
V |
|
VIN |
Input Voltage |
0.3V to VS |
|
|
VID |
Differential Input Voltage |
±VS |
|
|
IO |
DC Output Current |
2 |
A |
|
IP |
Peak Output Current (non repetitive) |
2.5 |
A |
|
Ptot |
Total Power Dissipation (Tamb = 70°C) for L6243 for L6243D |
2 1.2 |
W W |
|
Tstg |
Storage and Junction Temperature |
-55 to +150 |
°C |
L6243 Features
·12V/5V OPERATION
·PARKING FUNCTION FOR HARD DISK HEAD ACTUATOR
·OUTPUT CURRENT UP TO 2A DC, 2.5A PEAK
·LOW SATURATION VOLTAGE
·LOGIC AND POWER SUPPLY MONITOR
·LINEAR CONTROL
·THERMAL PROTECTION
·ENABLE FUNCTION
·CURRENT SENSE RESISTOR CONNECTIONS
·PARKING FUNCTION FOR HARD DISK HEAD ACTUATOR
·OUTPUT CURRENT UP TO 2A DC, 2.5A PEAK
·LOW SATURATION VOLTAGE
·LOGIC AND POWER SUPPLY MONITOR
·LINEAR CONTROL
·THERMAL PROTECTION
·ENABLE FUNCTION
·CURRENT SENSE RESISTOR CONNECTIONS
L6243 Connection Diagram
L6243
PDF/DataSheet Download
- Datasheet: L6243
- File Size: 116241 KB
- Manufacturer: STMICROELECTRONICS [STMicroelectronics]
- Click here to Download
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