ULQ2003A-Q1_15 Datasheet, PDF (11/25 Pages) Texas Instruments – High-Voltage High-Current Darlington Transistor Arrays

www.ti.com
9 Application and Implementation
ULQ2003A-Q1, ULQ2004A-Q1
SGLS148E – DECEMBER 2002 – REVISED DECEMBER 2015
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
9.1 Application Information
Typically, the ULQ200xA-Q1 device drives a high-voltage or high-current (or both) peripheral from an MCU or
logic device that cannot tolerate these conditions. This design is a common application of ULQ200xA-Q1 device,
driving inductive loads. This includes motors, solenoids and relays. Figure 15 shows an example of driving
multiple inductive loads.
9.2 Typical Application
3.3-V Logic
3.3-V Logic
3.3-V Logic
ULQ2003A-Q1
IN1
OUT1
IN2
OUT2
IN3
OUT3
IN4
OUT4
IN5
IN6
IN7
GND
OUT5
OUT6
OUT7
COM
V_SUP
V_SUP
Figure 15. ULQ2003A-Q1 Device as Inductive Load Driver
9.2.1 Design Requirements
For this design example, use the parameters listed in Table 1 as the input parameters.
Table 1. Design Parameters
DESIGN PARAMETER
GPIO voltage
Coil supply voltage
Number of channels
Output current (R_COIL)
Duty cycle
EXAMPLE VALUE
3.3 V or 5 V
12 V to 48 V
7
20 mA to 300 mA per channel
100%
Copyright © 2002–2015, Texas Instruments Incorporated
Submit Documentation Feedback
11
Product Folder Links: ULQ2003A-Q1 ULQ2004A-Q1