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L6452 Datasheet(PDF) 1 Page - STMicroelectronics |
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L6452 Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 16 page  DRIVES TWO 13X16 MATRIX HEADS HEAD TEMPERATURE SENSING POWER UP SYSTEM ELECTRICAL NOZZLE CHECK 8 BIT A/D 5 BIT D/A ± 4KV ESD PROTECTED OUTPUTS DESCRIPTION L6452 is a device designed to drive two 13x16 matrix ink jet printheads in printer applications. The output stage is able to source simultaneously 400 mA on each of the 16 power lines (columns) with a duty cycle of 33% in normal printing and 66% in head pre-heating. On the address lines (rows), the load is only capacitive (MOS FET driv- ing capability). The driver can control two print- heads, but only one is active at a time. The ad- dress scanning counter is included and can be disabled to allow a different scanning scheme. In order to avoid output activation during the sup- ply transient, an internal power-up system is im- plemented. As supporting function, L6452 is capable of sens- ing the head silicon temperature and to electri- cally check each nozzle. The device is also integrating a thermal protec- tion. March 1999 ® PRINT HEAD DRIVER PRINT HEAD TEMPERATURE CONTROL POWER & LOGICAL SUPPLIES CONTROL LINES A/D & PRINT HEAD TEMPERATURE CONTROL LINES ANALOG INPUTS PRINT HEAD A PRINT HEAD B D97IN523 13 ADDRESS LINES CHANNEL B 16 POWER LINES 13 ADDRESS LINES CHANNEL A Figure 1. Block Diagram PQFP100 L6452 DUAL 13X16 MATRIX HEAD INK JET DRIVER 1/16 |
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