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LM5145 Datasheet(PDF) 53 Page - Texas Instruments

Part # LM5145
Description  LM5137 4V to 80V, 100% Duty Cycle Capable, Dual-Channel, Synchronous Buck DC/DC Controller
PDF  74 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

LM5145 Datasheet(HTML) 53 Page - Texas Instruments

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8.2.3.3 Application Curves
Output Current (A)
0
5
10
15
20
70
75
80
85
90
95
100
VIN = 36V
VIN = 48V
VIN = 60V
25°C ambient temperature
Figure 8-21. Efficiency vs IOUT, PFM/SYNC Tied Low
2ms/DIV
EN 1V/DIV
VOUT 2V/DIV
IOUT 5A/DIV
PG1 1V/DIV
VIN = 48V, VEN1 = VEN2
10A resistive load
Figure 8-22. Enable ON and OFF Characteristic
1ms/DIV
VIN 20V/DIV
VOUT 2V/DIV
IOUT 5A/DIV
PG1 1V/DIV
VIN stepped to 48V
10A resistive load
Figure 8-23. Start-Up Characteristic
1ms/DIV
VIN 10V/DIV
VOUT 2V/DIV
PG1 1V/DIV
VIN ramped to 65V
10A resistive load
Figure 8-24. Prebiased Start-Up Characteristic
100µs/DIV
VIN 5V/DIV
VOUT 2V/DIV
IOUT 5A/DIV
PG1 1V/DIV
VIN decreasing from 48V
10A resistive load
Figure 8-25. Shutdown Characteristic
1µs/DIV
SW1 10V/DIV
SW2 10V/DIV
VIN = 48V
10A load
Figure 8-26. Switch-node Voltages
www.ti.com
LM5137
SNVSCU3 – OCTOBER 2025
Copyright © 2025 Texas Instruments Incorporated
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Product Folder Links: LM5137



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