LTC3600 LINER [Linear Technology], LTC3600 Datasheet - Page 13

• Manufacturer Part Number: LTC3600
• Description: 15V, 1.5A Synchronous Rail-to-Rail Single Resistor
• Manufacturer: LINER [Linear Technology]

APPLICATIONS INFORMATION
In most applications, the input capacitor is merely required
to supply high frequency bypassing, since the impedance to
the supply is very low. A 22μF ceramic capacitor is usually
enough for these conditions. Place this input capacitor as
close to V
Inductor Selection
Given the desired input and output voltages, the inductor
value and operating frequency determine the ripple current:
Table 1. Inductor Selection Table
INDUCTOR
IHLP-1616BZ-11 Series
IHLP-2020BZ-01 Series
FDV0620 Series
MPLC0525L Series
HCP0703 Series
RLF7030 Series
WE-TPC 4828 Series
ΔI
L
=
IN
⎛
⎝ ⎜
pin as possible.
f
V
SW
OUT
L
⎞
⎠ ⎟
⎛
⎝ ⎜
1−
INDUCTANCE
V
V
OUT
(μH)
1.0
2.2
4.7
2.2
3.3
4.7
5.6
6.8
2.2
3.3
4.7
1.5
2.2
1.5
2.2
3.3
4.7
6.8
8.2
1.5
2.2
3.3
4.7
6.8
1.2
1.8
2.2
2.7
3.3
3.9
4.7
IN
1
1
1
1
1
⎞
⎠ ⎟
(mΩ)
DCR
18.9
45.6
79.2
108
113
139
8.8
9.6
24
61
95
18
37
51
68
16
24
40
14
18
28
37
54
64
12
20
31
45
17
20
23
27
30
47
52
9
MAX CURRENT
3.25
2.35
2.15
1.72
1.55
(A)
4.5
1.7
4.2
3.3
2.8
2.5
2.4
5.7
3.2
2.8
6.4
5.2
4.1
5.5
4.5
6.4
6.1
5.4
4.1
3.4
2.8
3.1
2.7
2.5
11
7
4
9
8
6
4
Lower ripple current reduces core losses in the inductor,
ESR losses in the output capacitors, and output voltage
ripple. Highest efficiency operation is obtained at low
frequency with small ripple current. However, achieving
this requires a large inductor. There is a trade-off between
component size, efficiency and operating frequency.
A reasonable starting point is to choose a ripple current
that is about 40% of I
current occurs at the highest V
current does not exceed a specified maximum, the induc-
tance should be chosen according to:
L =
DIMENSIONS
4.3 × 4.7
4.3 × 4.7
4.3 × 4.7
5.4 × 5.7
5.4 × 5.7
5.4 × 5.7
5.4 × 5.7
5.4 × 5.7
5.4 × 5.7
6.7 × 7.4
6.7 × 7.4
6.7 × 7.4
6.7 × 7.4
6.2 × 5.4
6.2 × 5.4
6.2 × 5.4
6.9 × 7.3
6.9 × 7.3
6.9 × 7.3
6.9 × 7.3
6.9 × 7.3
6.9 × 7.3
4.8 × 4.8
4.8 × 4.8
4.8 × 4.8
4.8 × 4.8
4.8 × 4.8
4.8 × 4.8
4.8 × 4.8
⎛
⎜
⎝
7 × 7.3
7 × 7.3
7 × 7.3
7 × 7.3
7 × 7.3
7 × 7.3
7 × 7.3
(mm)
f
SW
V
OUT
ΔI
L(MAX)
OUT(MAX)
HEIGHT
(mm)
2.5
2.5
2.5
3.2
3.2
3.2
3.2
3.2
3.2
2.8
2.8
2.8
2.8
2.8
2.8
2.8
2
2
2
2
2
2
2
2
2
2
2
2
2
3
3
3
3
3
3
3
⎞
⎟ 1−
⎠
⎛
⎜
⎝
. Note that the largest ripple
IN
V
. To guarantee that ripple
Vishay
www.vishay.com
Toko
www.toko.com
NEC/Tokin
www.nec-tokin.com
Cooper Bussmann
www.cooperbussmann.com
TDK
www.tdk.com
Würth Elektronik
www.we-online.com
IN(MAX)
V
OUT
MANUFACTURER
LTC3600
⎞
⎟
⎠
13
3600fb