ltm4615 Linear Technology Corporation, ltm4615 Datasheet - Page 19

• Manufacturer Part Number: ltm4615
• Description: Triple Output, Low Voltage Dc/dc ?module Regulator
• Manufacturer: Linear Technology Corporation

APPLICATIONS INFORMATION
Table 4. Output Voltage Response vs Component Matrix (Refer to Figure 12) 0A to 2.5A Load Step Typical Measured Values
C
CERAMIC VENDORS
TDK
Murata
TDK
Murata
*Bulk capacitance is optional if V
OUT1
V
(V)
1.2
1.2
1.2
1.2
1.5
1.5
1.5
1.5
1.8
1.8
1.8
2.5
2.5
2.5
3.3
OUT
AND C
V
100μF
OUT1
1.2V
6.3V
(CERAMIC)
4A
10μF ×2
10μF ×2
10μF ×2
10μF ×2
10μF ×2
10μF ×2
10μF ×2
10μF ×2
10μF ×2
10μF ×2
10μF ×2
10μF ×2
10μF ×2
10μF ×2
10μF ×2
OUT2
C
IN
22μF
6.3V
C
22μF
6.3V
OUT1
(BULK)*
100μF
100μF
100μF
100μF
100μF
100μF
100μF
100μF
100μF
100μF
100μF
100μF
100μF
100μF
None
VALUE
22μF 6.3V
22μF 16V
100μF 6.3V
100μF 6.3V
C
IN
*FAIR-RITE 0805 2508056007Y6
IF MORE FILTERING REQUIRED
IN
1.2V
R
10k
FB1
C
has very low input impedance.
Figure 12. Typical 3V to 5.5V
OUT1
100μF , 22μF ×2
100μF , 22μF ×2
100μF , 22μF ×2
100μF , 22μF ×2
100μF , 22μF ×2
(CER) EACH
L1 0.2μH*
22μF ×1
22μF ×1
22μF ×1
22μF ×1
22μF ×1
22μF ×1
22μF ×1
22μF ×1
22μF ×1
22μF ×1
10k
R3
AND C
10μF
PGOOD1
C12
V
IN
OUT2
PART NUMBER
C3216X7SOJ226M
GRM31CR61C226KE15L
C4532X5R0J107MZ
GRM32ER60J107M
10μF
6.3V
C
IN1
PGOOD1
V
FB1
COMP1
TRACK1
RUN/SS1
LDO_IN
EN3
BOOST3
C
(POSCAP) EACH
OUT1
OUT1
GND1
V
220μF
220μF
220μF
220μF
220μF
220μF
150μF
150μF
150μF
None
None
None
None
None
None
IN1
AND C
LTM4615
GND2
OUT2
IN
, 1.5V and 1.2V at 4A and 1V at 1A Design
V
IN
3V TO 5.5V
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
GND3
V
I
TH
LDO_OUT
IN2
RUN/SS2
C
BULK VENDORS
Sanyo POSCAP
Sanyo POSCAP
C
Sanyo POSCAP
PGOOD2
PGOOD3
TRACK2
COMP2
OUT1
IN
V
OUT2
BULK VENDORS
FB2
FB3
V
3.3
3.3
3.3
3.3
3.3
3.3
(V)
AND C
5
5
5
5
5
5
5
5
5
C
10μF
6.3V
IN
IN2
R6
10k
DROOP
PGOOD2
OUT2
1V LOW NOISE AT 1A
V
(mV)
IN
33
25
33
25
30
28
30
27
34
30
30
50
33
50
50
PGOOD3
V
OUT3
10k
V
R4
OUT3
PEAK-TO-PEAK
DEVIATION
VALUE
150μF 10V
220μF 4V
VALUE
100μF 10V
R5
3.32k
68
50
68
50
60
60
60
56
68
60
60
90
60
95
90
C11
10μF
6.3V
RECOVERY
R
5.76k
TIME (μs)
FB2
11
10
11
11
10
10
12
12
12
10
10
12
12
9
8
22μF
6.3V
22μF
6.3V
PART NUMBER
10TPD150M
4TPE220MF
PART NUMBER
10CE100FH
LOAD STEP
LTM4615
4615 F12
(A/μs)
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
C
100μF
6.3V
V
1.5V
4A
OUT2
OUT2
19
(kΩ)
5.76
5.76
5.76
5.76
3.92
3.92
3.92
2.37
2.37
2.37
1.62
R
10
10
10
10
FB
4615f