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UX-2200CMU/CMC
FO-2150CMU/CMC
Name Function
VDD 5V Logic Supply.
GND Logic and Power Ground.
OUT0 to OUT27 DMOS Output.
CLAMP This pin has to be connected to the power supply voltage of the head resistors.
Each of the output DMOS have their drain connected with the anode of a protection
diode, all the cathodes of the protection diodes are connected to the clamp pin. In order
to have the device supplied, the CLAMP pin needs to be connected to the power.
INA, INB, INC, IND
Decoder inputs.
COM1, COM2 A low logic input on these pins enables the outputs selected by the decoder inputs.
CHIP ENABLE A logic high enable the chip.
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3. Description
The L6451 is realized in Multipower BCD Technology which combines isolated DMOS power transistors with CMOS
and Bipolar circuits on the same IC. By using mixed technology it has been possible to optimize the logic circuitry
and the power stage to achieve the best possible performances.
Intended to be used in ink jet Printer Applications as 4 to 28 (2x14) lines selectable decoder/driver,the L6451 device
driver has the advantages of low power CMOS input and logic, with 28 high current and high voltage DMOS outputs
capable of sustaining a maximum of 40V.
On system power up the output drivers are locked out using the chip enable function : two enable inputs are
available for the different driver banks.
An internal power-on system is implemented in order to avoid wrong output commutation during the supply voltage
transients.
Using a mask option during manufacturing allows a different decoding.
Control of the energy delivered to the print head is made by means of a special circuitry.
All driver outputs are capable of withstanding a contact discharge of ±8kV with the IC biased.
4. Absolute Maximum Ratings
5. Pin Functions
Symbol Parameter Value Unit
VOUT Output voltage 40 V
VCLAMP Output Clamping Voltage 40 V
IOUT Output Continuous Current 0.8 A
IPEAK Output Peak Current (with duty cycle = 10% TON = 4µs) 2 A
TJ Junction Temperature 150 °C
VDD Logic Supply Voltage 7 V
VIN Input Voltage Range
-0.3V to Vs +0.3
V
TAMB Operating Temperature Range 0 to 70 °C
TSTG Storage Temperature Range -55 to 150 °C