L6243D STMicroelectronics, L6243D Datasheet
L6243D
Specifications of L6243D
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L6243D Summary of contents
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... Enable input low will disable the device by forcing the outputs into a tristate mode. Power Fail Monitors for the logic and power supplies in- itiate an automatic parking sequence during a power failure. A resistor programmed parking voltage enables a constant velocity head retract. L6243 L6243D 1/12 ...
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... L6243-L6243D PIN CONNECTION (Top view) PLCC-44 GND 7 ERROR AMP INPUT 8 ERROR AMP OUTPUT 9 OP AMP -INPUT 10 OP AMP +INPUT 11 OP AMP OUTPUT 12 GND 13 WRITE DISABLE OUTPUT 14 POWER ON RESET OUTPUT 15 PARK VOLTAGE PROGRAM 16 GND 17 SO 24+2+2 ERROR AMP INPUT ERROR OUTPUT WRITE DISABLE OUTPUT ...
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... Output for write disable. Low will disable the writing mode. AMP– Inverting input of the additional op amp. AMP+ Non-inverting input of the additional op amp. AMPOUT Output of the additional op amp. Parameter = 70 C) for L6243 for L6243D 2 copper area on board Function L6243-L6243D Value Unit 18 V ...
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... L6243-L6243D ELECTRICAL CHARACTERISTICS (V Symbol Parameter V Supply Range S I Quiescent Drain Current d T Thermal Shutdown Junction j Temperature ERROR AMPLIFIER I Input Bias Current b I Input Offset Current OS V Input Offset Voltage OS Gv Large Signal Open Loop Voltage Gain GBW Gain Bandwidth G Minimum Voltage Gain ...
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... The deassertion of the ENABLE signal causes the machine to move into Tristate desired to perform an active Parking function, the PARK input must be driven low by the external hard- ware, or the the VCM can be driven to the Park position via the ERROR AMP IN control voltage L6243-L6243D Typ. Max. Unit 4.60 4. ...
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... L6243-L6243D FUNCTIONAL DESCRIPTION (continued) Function V input This is the Power Supply input. CC POWER FAIL Input for the V supply monitor. The Threshold can be externally set via a voltage divider. CC THRESH V SENSE OUT TTL compatible signal indicating the V CC Output THRESHOLD. LOGIC SUPPLY This input is used to monitor the Five Volt Logic Supply for the external control and other support SENSE input IC’ ...
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... Power on Reset and Write Disable outputs change from low to high level. Falling edges of Figure 1: Application Circuit (The pinout refers to the L6243) L6243-L6243D Write Disable and Power on Reset are delayed (typ order to disable the writing on the disk before the Power on Reset is activated. An addi- ...
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... L6243-L6243D Figure 2: Waveforms 8/12 ...
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... THERMAL CHARACTERISTICS Figure 3: R vs. Dissipated Power th (j-amb) L6243-L6243D Figure 4: R vs. Dissipated Power th (j-amb) 9/12 ...
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... L6243-L6243D PLCC44 PACKAGE MECHANICAL DATA DIM. MIN. TYP. A 17.4 B 16.51 C 3.65 D 4.2 d1 2.59 d2 0.68 E 14.99 e 1.27 e3 12.7 F 0. 1.16 M1 1.14 10/12 mm MAX. MIN. 17.65 0.685 16.65 0.650 3.7 0.144 4.57 0.165 2.74 0.102 16 0.590 0.101 inch TYP. MAX. 0.695 0.656 ...
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... F 7 MAX. MIN. 2.65 0.3 0.004 0.49 0.014 0.32 0.009 0.5 45 (typ.) 18.1 0.697 10.65 0.394 7.6 0.291 1.27 0.016 8 (max.) L6243-L6243D inch TYP. MAX. 0.104 0.012 0.019 0.013 0.020 0.713 0.419 0.050 0.65 0.299 0.050 11/12 ...
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... L6243-L6243D Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specification mentioned in this publication are subject to change without notice ...