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ULQ2003A-Q1 Folha de dados(PDF) 18 Page - Texas Instruments

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Nome de Peças ULQ2003A-Q1
Descrição Electrónicos  ULN200x, ULQ200x High-Voltage, High-Current Darlington Transistor Arrays
PDF  41 Pages
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Fabricante Electrônico  TI1 [Texas Instruments]
Página de início  http://www.ti.com
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ULQ2003A-Q1 Folha de dados(HTML) 18 Page - Texas Instruments

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8.3 System Examples
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ULN2002A
P-MOS
Output
VSS
V
Figure 8-4. P-MOS to Load
ULQ2003A
Lam
Test
TTL
Output
VCC
V
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Figure 8-5. TTL to Load
VDD
V
ULN2004A
ULQ2004A
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CMOS
Output
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Figure 8-6. Buffer for Higher Current Loads
VCC
V
RP
ULQ2003A
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TTL
Output
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Figure 8-7. Use of Pullup Resistors to Increase
Drive Current
8.4 Power Supply Recommendations
This device does not need a power supply. However, the COM pin is typically tied to the system power supply.
When this is the case, it is very important to ensure that the output voltage does not heavily exceed the COM
pin voltage. This discrepancy heavily forward biases the fly-back diodes and causes a large current to flow into
COM, potentially damaging the on-chip metal or over-heating the device.
8.5 Layout
8.5.1 Layout Guidelines
Thin traces can be used on the input due to the low-current logic that is typically used to drive ULN2003A device.
Take care to separate the input channels as much as possible, as to eliminate crosstalk. TI recommends thick
traces for the output to drive whatever high currents that may be needed. Wire thickness can be determined by
the current density of the trace material and desired drive current.
ULN2002A, ULN2003A, ULN2003AI
ULQ2003A, ULN2004A, ULQ2004A
SLRS027S – DECEMBER 1976 – REVISED JUNE 2024
www.ti.com
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Copyright © 2024 Texas Instruments Incorporated
Product Folder Links: ULN2002A ULN2003A ULN2003AI ULQ2003A ULN2004A ULQ2004A



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