LTC3883 Datasheet, PDF (50/112 Pages) Linear Technology – Single Phase Step-Down DC/DC Controller with Digital Power System Management

LTC3883/LTC3883-1
Applications Information
Table 12. VOUT_CFG
R_TOP (kΩ)
0 or Open
10
10
16.2
16.2
20
20
20
20
24.9
24.9
24.9
24.9
24.9
30.1
30.1
Open
R_BOTTOM (kΩ)
Open
23.2
15.8
20.5
17.4
17.8
15
12.7
11
11.3
9.09
7.32
5.76
4.32
3.57
1.96
0
V_OUT (V)
NVM
See VTRIM
3.3
3.1
2.9
2.7
2.5
2.3
2.1
1.9
1.7
1.5
1.3
1.1
0.9
0.7
0.5
Table 13. VTRIM_CFG
R_TOP (kΩ)
0 or Open
10
10
16.2
16.2
20
20
20
20
24.9
24.9
24.9
24.9
24.9
30.1
30.1
Open
R_BOTTOM (kΩ)
Open
23.2
15.8
20.5
17.4
17.8
15
12.7
11
11.3
9.09
7.32
5.76
4.32
3.57
1.96
0
V_TRIM (mV)
CHANGE TO
V_SET VOLTAGE
0
99
86.625
74.25
61.875
49.5
37.125
24.75
12.375
–12.375
–24.75
–37.125
–49.5
–61.875
–74.25
–86.625
–99
V_OUT (V)
IF V_OUT HAS
10kΩ/23.3kΩ
NVM
NVM
NVM
NVM
NVM
NVM
5.5
5.25
5
4.75
4.5
4.25
4
3.75
3.63
3.5
3.46
Table 14. FREQ_CFG (Phase Based on Falling Edge of SYNC)
R_TOP (kΩ)
0 or Open
R_BOTTOM (kΩ)
Open
FREQUENCY (kHz)
NVM
10
23.2
250
10
15.8
250
16.2
20.5
250
16.2
17.4
425
20
17.8
425
20
15
425
20
12.7
500
24.9
11.3
500
24.9
9.09
575
24.9
7.32
575
24.9
5.76
575
24.9
4.32
650
30.1
3.57
650
30.1
1.96
650
Open
0
External Clock
θ_SYNC TO θ₀
NVM
0
120
180
0
120
180
0
180
0
120
180
0
120
180
0
DESCRIPTION
NVM
2-Phase
3-Phase
2-Phase
2-Phase
3-Phase
2-Phase
2-Phase
2-Phase
2-Phase
3-Phase
2-Phase
2-Phase
3-Phase
2-Phase
2-Phase
3883f
50