CHANNEL DRIVER DMOS OUTPUT BREAKDOWN PRECISE OUTPUT ENERGY OUTPUT

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CHANNEL DRIVER DMOS OUTPUT BREAKDOWN PRECISE OUTPUT ENERGY OUTPUT

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L6451
CHANNEL DRIVER
DMOS OUTPUT BREAKDOWN PRECISE OUTPUT ENERGY OUTPUT PROTECTION WITH CLAMPING DIODES VERY QUIESCENT CURRENT PACKAGE: PLCC44
MULTIPOWER TECHNOLOGY
DESCRIPTION L6451 realized Multipower Technology which combines isolated DMOS power transistors with CMOS Bipolar circuits same using mixed technology been possible optimize logic circuitry power stage achieve best possible performances. Intended used Printer Applications lines selectable decoder/driver, L6451 device driver advantages power CMOS inputs logic, with high current high voltage DMOS outputs capable sustaining maximum 40V. system power output drivers locked using chip enable function; enable inputs available different driver banks. BLOCK DIAGRAM (case bit)
PLCC44
internal power-on system implemented order avoid wrong output commutation during supply voltage transients. Using mask option during manufacturing allows different decoding. Control energy delivered print head made means special circuitry. driver outputs capable withstanding contact discharge ±8kV with biased.
December 2000
L6451
PLCC44 CONNECTION (Top view)
L6451
ABSOLUTE MAXIMUM RATINGS
Symbol VOUT VCLAMP IOUT IPEAK Tamb Tstg Output Voltage Output Clamping Voltage Output Continuous Current Output Peak Current (with duty cycle 4µs) Junction Temperature Logic Supply Voltage Input Voltage Range Operating Temperature Range Storage Temperature Range Parameter Value -0.3V +0.3 Unit
FUNCTIONS
Name OUT0 OUT27 CLAMP Logic Supply. Logic Power Ground. DMOS Outputs. This connected power supply voltage head resistors. Each output DMOS have their drain connected with anode protection diode, cathodes protection diodes connected clamp pin. order have device supplied, CLAMP needs connected power. Decoder inputs. logic input these pins enables outputs selected decoder inputs. logic high enable chip. Function
INA, INB, INC, COM1, COM2 CHIP ENABLE
THERMAL DATA
Symbol j-amb Parameter Thermal Resistance Junction-Ambient Max. Value Unit °C/W
device mounted PCB.
L6451
D.C. ELECTRICAL CHARACTERISTICS Tamb 25°C, Vclamp (unless otherwise specified).
Symbol VCLAMP VOUT Parameter Logic Supply Voltage Clamping Voltage Level Input Voltage High Level Input Current Level Input Current High Level Input Current Logic Supply Current Output Saturation Voltage (Independent from output conditions) D.C. 0.4A D.C. 0.5A D.C. 0.4A D.C. 0.5A 25°C 90°C D.C.: 0.4A 25°C 90°C D.C.: 0.5A ±0.2 ±0.25 Test Condition Min. 4.75 -1.2 -200 Typ. Max. 5.25 Unit
Output saturation absolute voltage variation around typ. values extended temperature ranges
A.C. ELECTRICAL CHARACTERISTICS Tamb 25°C,
Symbol Toff Twout Signal Name INA, INB, INC, COMn INA, INB, INC, COMn COM1,2,3,4 COM1,2,3,4 Parameter Time HOLD Time TURN Time TURN Time Rise Time Fall Time Output Pulse Width Maximum allowable variation output power transmitted each driver resistive load Maximum allowable variation output power transmitted each driver resistive load Vclamp Twin 3.5µs IOUT 0.5A VCLAMP IOUT 0.5A, 90°C IOUT 0.5A, 90°C Test Condition Min. Twin Typ. Max. Unit
L6451
Figure Timing Waveforms
OUTPUT SELECTION Decoder Truth Table
(LSB) OUTPUTS 0.27 1.26 2.25 3.24 4.23 5.22 6.21 7.20 8.19 9.18 10.17 11.16 12.15 13.14
L6451
Figure Application Circuit
L6451
MIN. 1.16 1.14 14.99 1.27 12.7 0.46 0.71 0.101 0.046 0.045 17.4 16.51 3.65 2.59 0.68 0.590 0.050 0.500 0.018 0.028 0.004 TYP. MAX. 17.65 16.65 4.57 2.74 MIN. 0.685 0.650 0.144 0.165 0.102 0.027 0.630 inch TYP. MAX. 0.695 0.656 0.146 0.180 0.108
DIM.
OUTLINE MECHANICAL DATA
PLCC44
L6451
Information furnished believed accurate reliable. However, STMicroelectronics assumes responsibility consequences such information infringement patents other rights third parties which result from use. license granted implication otherwise under patent patent rights STMicroelectronics. Specification mentioned this publication subject change without notice. This publication supersedes replaces information previously supplied. STMicroelectronics products authorized critical components life support devices systems without express written approval STMicroelectronics. logo registered trademark STMicroelectronics 2000 STMicroelectronics Printed Italy Rights Reserved STMicroelectronics GROUP COMPANIES Australia Brazil China Finland France Germany Hong Kong India Italy Japan Malaysia Malta Morocco Singapore Spain Sweden Switzerland United Kingdom U.S.A. http://www.st.com

CHANNEL DRIVER DMOS OUTPUT BREAKDOWN PRECISE OUTPUT ENERGY OUTPUT

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