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LM5045MH Datasheet(PDF) 25 Page - Texas Instruments

Part # LM5045MH
Description  Full-Bridge PWM Controller with Integrated MOSFET Drivers
PDF  38 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

LM5045MH Datasheet(HTML) 25 Page - Texas Instruments

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1.25V
20 PA
0.4V
SHUTDOWN
OVP
1.25V
STANDBY
VPWR
5V
R1
R2
R3
LM5045
STANDBY
UVLO
20 PA
OVP
LM5045
1.25V
20 PA
STANDBY
VPWR
5V
R1
R2
UVLO
LM5045
1.25V
20 PA
SHUTDOWN
VPWR
R1
R2
STANDBY
0.4V
LM5045
www.ti.com
SNVS699G – FEBRUARY 2011 – REVISED MARCH 2013
Figure 23. Basic UVLO Configuration
Figure 24. Basic OVP Configuration
Figure 25. UVLO/OVP Divider
The UVLO and OVP can also be set together using a 3 resistor divider ladder as shown in Figure 25. R1 is
calculated as explained in the basic UVLO divider selection. Using the same values, as in the above two
examples, for the UVLO and OVP set points, R1 and R3 remain the same at 100kΩ and 1.5kΩ. The R2 is 2.7kΩ
obtained by subtracting R3 from 4.2kΩ.
Remote configuration of the controller’s operational modes can be accomplished with open drain device(s)
connected to the UVLO pin as shown in Figure 26.
Copyright © 2011–2013, Texas Instruments Incorporated
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Product Folder Links: LM5045



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