RT3661AB
Table 3. SET1 Pin Setting for VDDNB Controller AI Gain Ratio, VDD Controller QR Threshold
SET1 Pin Setting Voltage
Min
7.84
213.2
315.88
418.56
623.92
726.6
829.28
1034.64
1137.32
1240
1445.36
1548.04
Typical
50
250
350
450
650
750
850
1050
1150
1250
1450
1550
R
R
D
V
SET1_IR
�½
80μ
U
R
U
R
D
Max
92.16
286.8
384.12
481.44
676.08
773.4
870.72
1065.36
1162.68
1260
1454.64
1551.96
mV
Unit
AI_VDDNB
QR Threshold
(VDD)
Disable
25%
20mV
25mV
Disable
50%
20mV
25mV
Disable
100%
20mV
25mV
Disable
0LL
20mV
25mV
Table 4. TSEN Pin Setting for the Frequency of VDD/VDDNB Controller, VDD Controller Initial Offset and
PHOCP Setting Ratio
R
D
V
TSEN_DIV
�½
3.2
TSEN Pin Setting Voltage
Frequency
R
U
R
D
(VDD/VDDNB)
Min
6.75
57.25
208.75
259.25
410.75
461.25
612.75
663.25
814.75
865.25
1016.75
1067.25
1218.75
1269.25
1420.75
1471.25
Typical
25
75
225
275
425
475
625
675
825
875
1025
1075
1225
1275
1425
1475
Max
43.25
92.75
241.25
290.75
439.25
488.75
637.25
686.75
835.25
884.75
1033.25
1082.75
1231.25
1280.75
1429.25
1478.75
Unit
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
400kHz
300kHz
Initial Offset
(VDD)
VDD PHOCP
Setting Ratio
(Percentage of
OCP_SPIKE)
150%
200%
150%
200%
150%
200%
150%
200%
150%
200%
150%
200%
150%
200%
150%
200%
25mV
0mV
25mV
50mV
25mV
0mV
25mV
50mV
(M : Phase Number)
PHOCP_TH = OCP_SPIKE × (PHOCP Setting Ratio) / M
Copyright © 2019 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS3661AB-05
May
2019
www.richtek.com
9
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