LM5145 datasheet(52/70 Pages) TI

Part #	LM5145

Description	LM5148 80-V, Synchronous, Buck DC/DC Controller with Ultra-Low IQ and Dual Random Spread Spectrum

PDF	70 Pages

Scroll/Zoom	100%

Manufacturer	TI [Texas Instruments]

Direct Link	http://www.ti.com

Logo

52 / 70 page

9.2.4.3 Application Curves

Load Current (A)

100

VIN = 8 V

VIN = 12 V

VIN = 18 V

VIN = 24 V

3.3-V output

Figure 9-40. Efficiency vs IOUT

Load Current (A)

0.001

0.01

0.1

10 20

100

VIN = 8 V

VIN = 12 V

VIN = 18 V

VIN = 24 V

3.3-V output

Figure 9-41. Efficiency vs IOUT, Log Scale

1 ms/DIV

VIN 5V/DIV

VOUT 1V/DIV

IOUT 10A/DIV

VIN step to 12 V

20-A load

Figure 9-42. VIN Start-Up Characteristic

1 ms/DIV

EN 2V/DIV

VOUT 1V/DIV

IOUT 10A/DIV

VIN = 12 V

20-A load

Figure 9-43. ENABLE ON and OFF Characteristic

100 µs/DIV

VOUT 200 mV/DIV

IOUT 10 A/DIV

VIN = 12 V

FPWM

Figure 9-44. Load Transient, 5 A to 15 A

100 µs/DIV

VOUT 500 mV/DIV

IOUT 10 A/DIV

VIN = 12 V

FPWM

Figure 9-45. Load Transient, 0 A to 20 A

LM5148

SNVSC01 – FEBRUARY 2023

www.ti.com

Submit Document Feedback

Product Folder Links: LM5148

LM5145 Datasheet(PDF) 52 Page - Texas Instruments

LM5145 Datasheet(HTML) 52 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70

Datasheet Download

Link URL