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EN2340QI Datasheet, PDF (16/23 Pages) Enpirion, Inc. – 204A Voltage Mode Synchronous Buck PWM
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EN2340QI
PVIN
VOUT
CA (pF)
Low VOUT Ripple
CIN = 1 x 22µF/1206
COUT = 2 x 47µF/1206
RA= 180/(Vout0.5) kΩ
RCA
(kΩ)
Nominal
Ripple
(mV)
Nominal
Deviation
(mV)
(Note 7)
RA (kΩ)
Smallest Solution Size
CIN = 1 x 22µF/1206
COUT = 2 x 22µF/0805
CA (pF)
RCA
(kΩ)
Nominal
Ripple
(mV)
Nominal
Deviation
(mV)
(Note 7)
≤1.0V
10
30
≤5
≤47
75
27
0.1
≤10
≤34
1.2V
12
27
6
48
43
39
0.1
13
33
1.5V
15
27
5
53
56
39
0.1
15
38
14V
1.8V
22
27
6
54
56
39
0.1
18
41
2.5V
27
24
8
55
51
39
0.1
26
59
3.3V
39
18
11
63
51
33
0.1
35
63
5.0V
47
8.2
18
97
75
22
5.1
42
115
≤1.0V
18
22
≤4
≤48
27
47
0.1
≤10
≤35
1.2V
22
22
5
49
75
47
0.1
13
37
1.5V
27
20
5
53
75
47
0.1
15
38
12V
1.8V
33
20
6
54
75
47
0.1
17
44
2.5V
47
18
7
54
56
47
0.1
25
59
3.3V
56
15
10
66
51
39
0.1
32
63
5.0V
56
10
16
99
75
22
5.1
39
128
≤1.0V
33
18
≤3
≤45
27
82
0.1
≤9
≤35
1.2V
39
18
4
46
30
100
0.1
13
39
1.5V
47
18
5
54
30
100
0.1
14
43
10V
1.8V
56
16
6
56
30
100
0.1
17
50
2.5V
68
12
7
57
75
56
0.1
26
70
3.3V
82
10
9
68
56
47
0.1
30
83
5.0V
100
4.3
14
98
75
33
5.1
33
140
≤1.0V 100
8.2
≤3
≤51
100
100
0.1
≤10
≤41
1.2V
100
8.2
4
51
100
100
0.1
12
43
1.5V
100
8.2
4
54
100
100
0.1
14
46
8.0V
1.8V
100
8.2
5
57
100
100
0.1
16
53
2.5V
100
8.2
6
64
91
82
0.1
23
71
3.3V
100
8.2
8
70
75
56
0.1
25
85
5.0V
100
8.2
10
110
75
56
5.1
30
127
≤1.0V 100
8.2
≤3
≤60
100
100
0.1
≤9
≤46
1.2V
100
8.2
4
63
100
100
0.1
12
51
6.6V
1.5V
1.8V
100
100
8.2
8.2
4
5
65
100
100
0.1
14
56
68
100
100
0.1
16
61
2.5V
100
8.2
5
75
100
100
0.1
19
83
3.3V
100
8.2
6
85
91
82
0.1
22
106
≤1.0V 100
8.2
≤3
≤73
100
100
0.1
≤9
≤56
1.2V
100
8.2
3
75
100
100
0.1
11
63
5V
1.5V
100
8.2
4
76
100
100
0.1
13
70
1.8V
100
8.2
4
80
100
100
0.1
13
78
2.5V
100
8.2
4
88
100
100
0.1
14
98
Table 6:RA, CA, and RCA Values for Various PVIN/VOUT Combinations: Low VOUT Ripple vs. Smallest Solution Size. See
Figure 11. Use the equations in Figure 11 to calculate RA (for low VOUT ripple option) and RB.
Note 7: Nominal Deviation is for a 2A load transient step.
Note 8: For compensation values of output voltage in between the specified output voltages, choose compensation values
of the lower output voltage setting.
06878
October 9, 2013
www.altera.com/enpirion, Page 16
Rev E
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