Datasheet

www.ti.com Using the Evaluation Board
Table 1. Component Values for SW1 and SW2
Ideal Resistor Common R Values Actual V
OUT
w/ Actual V
OUT
Feedback Capacitors
Values Com/R (V) Delta from
Target (V)
Target R1(KΩ) R2(KΩ) R1(KΩ) R2(KΩ) C1(pF) C2(pF)
V
OUT
(V)
0.8 120 200 121 200 0.803 0.002 15 none
Buck 1 Only
0.9 160 200 162 200 0.905 0.005 15 none
1 200 200 200 200 1 0 15 none
1.1 240 200 240 200 1.1 0 15 none
1.2 280 200 280 200 1.2 0 12 none
1.3 320 200 324 200 1.31 0.01 12 none
1.4 360 200 357 200 1.393 –0.008 10 none
Buck 1 and
1.5 400 200 402 200 1.505 0.005 10 none
Buck 2
1.6 440 200 442 200 1.605 0.005 8.2 none
1.7 427 178 432 178 1.713 0.013 8.2 none
1.8 463 178 464 178 1.803 0.003 8.2 none
1.9 498 178 499 178 1.902 0.002 8.2 none
2 450 150 453 150 2.01 0.01 8.2 none
2.1 480 150 475 150 2.083 –0.017 8.2 none
2.2 422 124 422 124 2.202 0.002 8.2 none
2.3 446 124 442 124 2.282 –0.018 8.2 none
2.4 471 124 475 124 2.415 0.015 8.2 none
2.5 400 100 402 100 2.51 0.01 8.2 none
2.6 420 100 422 100 2.61 0.01 8.2 none
2.7 440 100 442 100 2.71 0.01 8.2 33
2.8 460 100 464 100 2.82 0.02 8.2 33 Buck 2 Only
2.9 480 100 475 100 2.875 -0.025 8.2 33
3 500 100 499 100 2.995 -0.005 6.8 33
3.1 520 100 523 100 3.115 0.015 6.8 33
3.2 540 100 536 100 3.18 -0.02 6.8 33
3.3 560 100 562 100 3.31 0.01 6.8 33
3.4 580 100 576 100 3.38 -0.02 6.8 33
3.5 600 100 604 100 3.52 0.02 6.8 33
5
SNVA329D–March 2008–Revised April 2013 AN-1800 Evaluation Kit for LM26480 - Dual DC/DC Buck Regulators with
Dual Low-Noise Linear Regulators
Submit Documentation Feedback
Copyright © 2008–2013, Texas Instruments Incorporated