Sharp UX-2200CM Manuale Utente
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.
–
22
–
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.
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