CHANNEL DRIVER DMOS OUTPUT BREAKDOWN DECODER OPTIONS INCLUDED PRE

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CHANNEL DRIVER DMOS OUTPUT BREAKDOWN DECODER OPTIONS INCLUDED PRE

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L6450
CHANNEL DRIVER
DMOS OUTPUT BREAKDOWN DECODER OPTIONS INCLUDED PRECISE OUTPUT ENERGY OUTPUT PROTECTION WITH CLAMPING DIODES VERY QUIESCENT CURRENT PLCC44 PQFP44 10mm) DESCRIPTION L6450 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, L6450 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; four enable inBLOCK DIAGRAM (case bit)
MULTIPOWER TECHNOLOGY
PQFP44
PLCC44
puts available different driver banks. 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 withdstanding contact discharge ±8KV with biased.
March 1994
This advanced information product development undergoing evaluation. Details subject change without notice.
L6450
BLOCK DIAGRAM (case bit)
PQFP44 CONNECTION (Top view)
L6450
PLCC44 CONNECTION (Top view)
FUNCTIONS
Name OUT0 OUT27 CLAMP Logic Supply. Logic Power Ground. DMOS Outputs. This pins have connected power supply voltage head resistors, each output DMOS have their drain connected with anode protection diode, catodes protection diodes collected pins clamp. CLAMP pins connected power, device supplied. Decoder inputs. input shares with other input COM3, different functions selected Bench. logic input this pins enable outputs selected decoder inputs according logic level bench. input COM3 shares with other input IND, different functions selected Bench. logic high enable chip. Function
INA, INB, INC,
COM1, COM2, COM3, COM4
CHIP ENABLE
THERMAL DATA
Symbol j-amb Parameter Thermal Resistance Junction-Ambient Max. PQFP44 PLCC44 Unit °C/W
device mounted PCB.
L6450
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
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 (Indipendent from output conditions) D.C. 0.4A D.C. 0.5A D.C. 0.4A D.C. 0.5A ±0.2 ±0.25 -1.2 -200 Test Condition Min. 4.75 Typ. Max. 5.25 Unit
Output saturation absolute voltage variation around typ. values extended temperature ranges
25°C 90°C D.C.: 0.4A 25°C 90°C D.C.: 0.5A
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 Twin 3.5µs IOUT 0.5A VCLAMP IOUT 0.5A, 90°C IOUT 0.5A, 90°C Test Condition Min. Twin Typ. Max. Unit
L6450
Figure Timing Waveforms
OUTPUT SELECTION 1)Decoder Truth Table when BENCH HIGH; IND/COM3 selected input decoder ind; COM1 input enable OUT0 OUT13; COM2 Input Enable OUT14 OUT27
(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
2)Decoder Truth Table when BENCH LOW; IND/COM3 selected COM3 COM1: Input Enable OUT0 OUT6 COM2: Input Enable OUT7 OUT13 COM3: Input Enable OUT14 OUT20 COM4: Input Enable OUT21 OUT27
(LSB) OUTPUTS 7,27,
L6450
Figure Application Circuit
L6450
PQFP44 PACKAGE MECHANICAL DATA
DIM. MIN. 0.65 16.95 13.90 0.25 2.55 0.35 0.13 16.95 13.90 17.20 14.00 10.00 1.00 17.20 14.00 10.00 0.80 1.60 0°(min.), 7°(max.) 0.95 0.025 17.45 14.10 0.667 0.547 2.80 3.05 0.50 0.23 17.45 14.10 TYP. MAX. 3.40 0.0098 0.100 0.0138 0.005 0.667 0.547 0.677 0.551 0.394 0.039 0.677 0.551 0.394 0.0315 0.063 0.0374 0.687 0.555 0.110 0.120 0.0197 0.009 0.687 0.555 MIN. inch TYP. MAX. 0.134
0.10mm .004 Seating Plane
PQFP44
L6450
PLCC44 PACKAGE MECHANICAL DATA
DIM. 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
L6450
Information furnished believed accurate reliable. However, SGS-THOMSON Microelectronics assumes responsibility consequences such information infringement patents other rights third parties which result from use. license granted implication otherwise under patent patent rights SGS-THOMSON Microelectronics. Specifications mentioned this publication subject change without notice. This publication supersedes replaces information previously supplied. SGS-THOMSON Microelectronics products authorized critical components life support devices systems without express written approval SGS-THOMSON Microelectronics. 1994 SGS-THOMSON Microelectronics Rights Reserved SGS-THOMSON Microelectronics GROUP COMPANIES Australia Brazil France Germany Hong Kong Italy Japan Korea Malaysia Malta Morocco Netherlands Singapore Spain Sweden Switzerland Taiwan Thaliand United Kingdom U.S.A.

CHANNEL DRIVER DMOS OUTPUT BREAKDOWN DECODER OPTIONS INCLUDED PRE

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