E-L6452 STMicroelectronics

L6452 Dual 13x16 Matrix Head Ink Jet Driver Features 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 PQFP100 Description L6452 is a device designed to drive two 13x16 matrix ink jet print heads in printer applications. In order to avoid output activation during the The output stage is able to source simultaneously supply transient, an internal power-up system is 400 mA on each of the 16 power lines (columns) implemented. with a duty cycle of 33% in normal printing and As supporting function, L6452 is capable of 66% in head pre-heating. On the address lines sensing the head silicon temperature and to (rows), the load is only capacitive (MOS FET electrically check each nozzle. driving capability). The driver can control two print heads, but only one is active at a time. The The device is also integrating a thermal address scanning counter is included and can be protection. disabled to allow a different scanning scheme. Order codes Part number Op. Temp range, CPackage Packing E-L6452 0 to 70 PQFP100 Tray L6452DIE8 0 to 70 DIE -- Rev 2 February 2006 1/22 www.st.com 22Contents L6452 Contents 1 Block diagrams . 3 2 Pin description 5 3 Electrical specifications 8 3.1 Absolute maximum ratings . 8 3.2 DC Electrical characteristics 8 3.3 Counter Truth Table 12 3.4 Decoder Truth Table . 13 4 Print Head Temperature Control Part 14 4.1 Introduction 14 4.2 Print Head Block Diagram (Figure 5.) 14 5 Package information 20 6 Revision history 21 2/22