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EN2390QI Datasheet, PDF (15/21 Pages) Enpirion, Inc. – 9A Voltage Mode Synchronous Buck PWM
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EN2390QI
Best Performance
Cin = 2 x 22uF/1206
Cout = 3 x 47uF/0805 + 2 x 22uF/0805
(Vout≤3.3V)
Cout = 2 x 47uF/1206 + 2 x 22uF/0805
(Vout>3.3V)
Smallest Solution Size
Cin = 2 x 22uF/1206
Vout ≤ 1.8V, Cout = 2x47uF (0805)-6.3V
3.3V > Vout > 1.8V, Cout = 2x47uF (1206)-
10V
PVIN VOUT
RA
(KΩ)
CA
(pF)
RCA
(KΩ)
Nominal
Ripple
(mV)
Nominal
Deviation
(mV)
RA
(KΩ)
CA
(pF)
RCA
(KΩ)
Nominal Nominal
Ripple Deviation
(mV)
(mV)
0.9V 200 39 16
12
91
75
18 8.2
15
93
1.2V 200 33 15
13
96
75
18 8.2
21
104
1.5V 200 27 13
14
109
75
18 8.2
27
110
14V 1.8V 200 22 12
16
116
75
18 8.2
35
120
2.5V 200 18 8.2
20
143
75
15 8.2
54
150
3.3V 200 12 4.3
30
196
75
10 8.2
81
215
5.0V 200 5.6 0
46
295
75
12 8.2
106
305
0.9V 200 47 12
11
97
75
27 5.1
15
96
1.2V 200 39 10
12
106
75
27 5.1
21
104
1.5V 200 33 9.1
13
113
75
27 5.1
27
112
12V 1.8V 200 27 7.5
15
123
75
27 5.1
34
130
2.5V 200 22 3.9
18
149
75
22 5.1
52
162
3.3V 200 15 0
26
198
75
15 5.1
77
221
5.0V 200 6.8 0
39
306
75
18 5.1
96
313
0.9V 200 56 7.5
10
101
75
56
2
15
99
1.2V 200 47 6.2
11
113
75
56
2
20
107
1.5V 200 47 4.3
12
116
75
39
2
26
122
10V 1.8V 200 39 3.0
13
121
75
39
2
33
126
2.5V 200 27 0
16
157
75
33
2
50
169
3.3V 200 18 0
23
216
75
22
2
71
241
5.0V 200 8.2 0
34
333
75
22
2
82
290
0.9V 200 82 3.3
9
110
75 100 0
15
108
1.2V 200 68 1.6
10
115
75 100 0
20
113
1.5V 200 56 0
10
123
75
82
0
25
122
8.0V 1.8V 200 47 0
11
132
75
68
0
31
136
2.5V 200 39 0
14
160
75
47
0
46
183
3.3V 200 27 0
20
210
75
33
0
62
253
5.0V 200 12 0
25
338
75
33
0
62
301
0.9V 200 100 0
8
117
75 100 0
14
121
1.2V 200 82 0
8
124
75 100 0
19
128
6.6V
1.5V
1.8V
200 82
200 68
0
0
9
9
130
75 100 0
24
138
142
75 100 0
29
149
2.5V 200 47 0
12
175
75
68
0
41
188
3.3V 200 33 0
16
222
75
47
0
53
239
0.9V 200 150 0
7
132
75 100 0
13
152
1.2V 200 120 0
7
138
75 100 0
18
161
5V
1.5V
1.8V
200 120 0
200 100 0
8
8
142
75 100 0
22
177
154
75 100 0
25
183
2.5V 200 68 0
9
185
75 100 0
33
216
3.3V 200 47 0
12
231
75
68
0
36
265
Table 5: RA, CA, and RCA Values for Various PVIN/VOUT Combinations: Low VOUT Ripple vs. Smallest Solution Size. Use
the equations in Figure 6 to calculate RA (for low VOUT ripple option) and RB.
Note 6: Nominal Deviation is for a 9A load transient step.
Note 7: For compensation values of output voltage in between the specified output voltages, choose compensation values
of the lower output voltage setting.
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