Datasheet

LTC3589/LTC3589-1/
LTC3589-2
25
3589ff
For more information www.linear.com/3589
Table 9. Inductors for Step-Down Switching Regulators 2 and 3
MANUFACTURERS PART NUMBER
VALUE
(µH) DCR ()
MAX DC
CURRENT (A) SIZE (mm) W × L × H
Coilcraft XPL4020-102ML
XPL4020-152ML
XPL4020-472ML
1.0
1.5
4.7
0.029
0.036
0.130
4.00
3.60
1.90
4.2 × 4.2 × 2.0
4.2 × 4.2 × 2.0
4.2 × 4.2 × 2.0
Cooper SD14-1R2-R
SD14-3R2-R
SD25-3R3-R
1.2
3.2
3.3
0.034
0.066
0.038
3.35
2.00
2.21
5.2 × 5.2 × 1.45
5.2 × 5.2 × 1.45
4.8 × 4.8 × 2.5
Sumida CDRH5D16NP-4R7N
CDRH38D16RHPNP-3R3M
4.7
3.3
0.064
0.059
2.05
1.46
5.6 × 5.6 × 1.8
4.2 × 4.2 × 1.8
TDK VLF5014ST-2R2N2R3
VLCF5020T-2R7N2R2-1
VLCF5020T-3R3N2R0-1
2.2
2.7
3.3
0.073
0.083
0.096
2.3
2.2
2
4.8 × 4.6 × 1.4
5.0 × 5.0 × 2.0
5.0 × 5.0 × 2.0
TOKO 1124BS-2R4N
1124BS-3R3N
2.4
3.3
0.065
0.074
2.30
2.10
4.5 × 4.7 × 1.8
4.5 × 4.7 × 1.8
Tokin H-DI-0520-3R3
H-DI-0520-4R7
H-DI-0630-3R8
H-DI-0630-4R7
3.3
4.7
3.8
4.7
0.062
0.090
0.040
0.043
2.00
1.80
2.00
1.90
5.3 × 5.3 × 2.0
5.3 × 5.3 × 2.0
6.3 × 6.3 × 3.0
6.3 × 6.3 × 3.0
Wurth 744043004
744052002
7440530047
744042003
7440430022
4.7
2.5
4.7
3.3
2.2
0.052
0.030
0.030
0.055
0.023
1.55
2.4
2.4
1.95
2.5
5.0 × 5.0 × 3.0
5.8 × 5.8 × 1.8
5.8 × 5.8 × 2.8
4.8 × 4.8 × 1.8
4.8 × 4.8 × 2.8
operaTion
Figure 4. Buck-Boost Switching Regulator Application Circuit
3589 F04
P
VIN4
BB_OUTSW4AB SW4CD
A
B C
D
PWM
CONTROL
0.8V
EN
MODE
BB_FB
R1 22µF
R2
–
+