L6452

Rise Time :
Fall Time :
Supply Voltage - Max :
Supply Voltage - Min :
Supply Current :
Maximum Power Dissipation :
Product :
Mounting Style : SMD/SMT
Maximum Operating Temperature : + 70 C
Packaging : Tray
Type : Dual 13 X 16 Matrix Head Ink Jet Driver
Package / Case : PQFP-100


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


Pinout




Specifications

Symbol	Parameter	Value	Unit
Vc	Power line supply voltage	14	V
Vr	Address line supply voltage	14	V
Va	Analog supply voltage	14	V
Vdd	Logic supply voltage	6	V
Vstep_up	Driving voltage of power DMOS stage	28	V
Vin	Logic input voltage range	-0.3 to Vdd+0.3	V
Iout	Output continuous current	0.5	A
Tj	Junction temperature	150	°C
Tamb	Operating temperature range	0 to 70	°C
Tstg	Storage temperature range	-55 to 150	°C

Description

L6452 is a device designed to drive two 13x16 matrix ink jet printheadsin 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 driving capability). The driver can control two printheads, but only one is active at a time. The address scanning counter is included and can be disabled to allow a different scanning scheme. In order to avoid output activation during the supply transient, an internal power-up system is implemented.

As supporting function, L6452 is capable of sensing the head silicon temperature and to electrically check each nozzle.

L6452 is also integrating a thermal protection.