L6452 datasheet(1/16 Pages) STMICROELECTRONICS

Numer części	L6452

Szczegółowy opis	DUAL 13X16 MATRIX HEAD INK JET DRIVER

PDF	16 Pages

Scroll/Zoom	100%

Producent	STMICROELECTRONICS [STMicroelectronics]

Strona internetowa	http://www.st.com

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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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