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PDF LTM4602HV Data sheet ( Hoja de datos )
| Número de pieza | LTM4602HV | |
| Descripción | High Efficiency DC/DC uModule | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LTM4602HV (archivo pdf) en la parte inferior de esta página. Total 24 Páginas | ||
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FEATURES
■ Complete Switch Mode Power Supply
■ Wide Input Voltage Range: 4.5V to 28V
■ 6A DC, Typical 8A Peak Output Current
■ 0.6V to 5V Output Voltage
■ 1.5% Output Voltage Regulation
■ Ultrafast Transient Response
■ Parallel µModule™ DC/DC Converters
■ Current Mode Control
■ Pin Compatible with the LTM4600 and LTM4602
■ Up to 92% Efficiency
■ Programmable Soft-Start
■ Output Overvoltage Protection
■ Optional Short-Circuit Shutdown Timer
■ Pb-Free (e4) RoHS Compliant Package with Gold-Pad
Finish
■ Small Footprint, Low Profile (15mm × 15mm ×
2.8mm) LGA Package
U
APPLICATIO S
■ Telecom and Networking Equipment
■ Servers
■ Industrial Equipment
■ Point of Load Regulation
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
µModule is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners. Protected by U.S. Patents including 5481178,
6100678, 6580258, 5847554, 6304066.
LTM4602HV
6A, 28VIN High Efficiency
DC/DC µModule
DESCRIPTIO
The LTM®4602HV is a complete 6A, DC/DC step down
power supply with up to 28V input operation. Included
in the package are the switching controller, power FETs,
inductor, and all support components. Operating over
an input voltage range of 4.5V to 28V, the LTM4602HV
supports an output voltage range of 0.6V to 5V, set by
a single resistor. This high efficiency design delivers 6A
continuous current (8A peak), needing no heat sinks or
airflow to meet power specifications. Only bulk input and
output capacitors are needed to finish the design.
The low profile package (2.8mm) enables utilization of
unused space on the bottom of PC boards for high density
point of load regulation. High switching frequency and an
adaptive on-time current mode architecture enables a very
fast transient response to line and load changes without
sacrificing stability. Fault protection features include
integrated overvoltage and short circuit protection with
a defeatable shutdown timer. A built-in soft-start timer is
adjustable with a small capacitor.
The LTM4602HV is packaged in a thermally enhanced, com-
pact (15mm × 15mm) and low profile (2.8mm) over-molded
Land Grid Array (LGA) package suitable for automated
assembly by standard surface mount equipment. For the
4.5V to 20V input range version, refer to the LTM4602.
TYPICAL APPLICATIO
6A µModule Power Supply with 4.5V to 28V Input
VIN
4.5V TO 28V
ABS MAX
VIN VOUT
CIN LTM4602HV COUT
VOUT
2.5V
6A
VOSET
PGND SGND
31.6k
4602HV TA01a
Efficiency vs Load Current with 24VIN (FCB = 0)
90
80
70
60
50
40
30
20
10
0
0
1.2VOUT
1.5VOUT
1.8VOUT
2.5VOUT
3.3VOUT
3.3VOUT (1MHz)
1234
LOAD CURRENT (A)
5
6
4602HV G03
4602hvf
1
1 page  
LTM4602HV
TYPICAL PERFOR A CE CHARACTERISTICS (See Figure 22 for all curves)
3.3V Transient Response
Start-Up, IOUT = 0A
Start-Up, IOUT = 6A
(Resistive Load)
VOUT
50mV/DIV
IOUT
2A/DIV
20µs/DIV
3.3V AT 3A/µs LOAD STEP
COUT = 22µF, 6.3V CERAMIC
330µF, 4V SANYO POS CAP
VOUT
0.5V/DIV
VOUT
0.5V/DIV
4602HV G09
IIN
0.5A/DIV
VIN = 12V
200µs/DIV
VOUT = 1.5V
COUT = 1 × 22µF, 6.3V X5R
330µF, 4V SANYO POS CAP
4602HV G10
NO EXTERNAL SOFT-START CAPACITOR
IIN
0.5A/DIV
VIN = 12V
500µs/DIV
VOUT = 1.5V
COUT = 1 × 22µF, 6.3V X5R
330µF, 4V SANYO POS CAP
4602HV G11
NO EXTERNAL SOFT-START CAPACITOR
Short-Circuit Protection,
IOUT = 0A
Short-Circuit Protection,
IOUT = 6A
VOUT
0.5V/DIV
IIN
0.5A/DIV
VIN = 12V
20µs/DIV
VOUT = 1.5V
COUT = 1 × 22µF, 6.3V X5R
330µF, 4V SANYO POS CAP
4602HV G12
NO EXTERNAL SOFT-START CAPACITOR
VOUT
0.5V/DIV
IIN
0.5A/DIV
VIN = 12V
20µs/DIV
VOUT = 1.5V
COUT = 1 × 22µF, 6.3V X5R
330µF, 4V SANYO POS CAP
4602HV G13
NO EXTERNAL SOFT-START CAPACITOR
VIN to VOUT Stepdown Ratio
5.5
fADJ = OPEN
5.0
5V
4.5
4.0
3.5 3.3V
3.0
2.5V
2.5
2.0 1.8V
1.5 1.5V
1.0 1.2V
0.5
0
0
0.6V
5 10 15 20 25 28
VIN (V)
SEE FREQUENCY ADJUSTMENT DISCUSSION
FOR 12VIN TO 5VOUT AND 5VIN TO 3.3VOUT
CONVERSION
4602HV G14
4602hvf
5
5 Page 
LTM4602HV
APPLICATIO S I FOR ATIO
Table 2. Output Voltage Response Versus Component Matrix (Refer to Figure 17), 0A to 3A Step (Typical Values)
TYPICAL MEASURED VALUES
COUT1 VENDORS
TDK
PART NUMBER
C4532X5R0J107MZ (100UF,6.3V)
COUT2 VENDORS
SANYO POS CAP
PART NUMBER
6TPE330MIL (330µF, 6.3V)
TAIYO YUDEN
JMK432BJ107MU-T ( 100µF, 6.3V)
SANYO POS CAP
2R5TPE470M9 (470µF, 2.5V)
TAIYO YUDEN
JMK316BJ226ML-T501 ( 22µF, 6.3V)
SANYO POS CAP
4TPE470MCL (470µF, 4V)
VOUT
CIN
(V) (CERAMIC)
CIN
(BULK)
COUT1
(CERAMIC)
COUT2
(BULK)
CCOMP C3 VIN DROOP PEAK TO PEAK RECOVERY TIME LOAD STEP
(V) (mV)
(mV)
(µs) (A/µs)
1.2 2 × 10µF 25V 150µF 35V 3 × 22µF 6.3V 470µF 4V NONE 100pF 5
30
60
25 3
1.2 2 × 10µF 25V 150µF 35V 1 × 100µF 6.3V 470µF 2.5V NONE 100pF 5
30
60
20 3
1.2 2 × 10µF 25V 150µF 35V 2 × 100µF 6.3V 330µF 6.3V NONE 100pF 5
25
54
20 3
1.2 2 × 10µF 25V 150µF 35V 4 × 100µF 6.3V
NONE
NONE 100pF 5
25
55
20 3
1.2 2 × 10µF 25V 150µF 35V 3 × 22µF 6.3V 470µF 4V NONE 100pF 12
30
60
25 3
1.2 2 × 10µF 25V 150µF 35V 1 × 100µF 6.3V 470µF 2.5V NONE 100pF 12
25
54
20 3
1.2 2 × 10µF 25V 150µF 35V 2 × 100µF 6.3V 330µF 6.3V NONE 100pF 12
25
56
20 3
1.2 2 × 10µF 25V 150µF 35V 4 × 100µF 6.3V
NONE
NONE 100pF 12
25
55
20 3
1.5 2 × 10µF 25V 150µF 35V 3 × 22µF 6.3V 470µF 4V NONE 100pF 5
25
50
25 3
1.5 2 × 10µF 25V 150µF 35V 1 × 100µF 6.3V 470µF 2.5V NONE 100pF 5
25
54
20 3
1.5 2 × 10µF 25V 150µF 35V 2 × 100µF 6.3V 330µF 6.3V NONE 100pF 5
25
59
20 3
1.5 2 × 10µF 25V 150µF 35V 4 × 100µF 6.3V
NONE
NONE 100pF 5
26
59
20 3
1.5 2 × 10µF 25V 150µF 35V 3 × 22µF 6.3V 470µF 4V NONE 100pF 12
25
55
25 3
1.5 2 × 10µF 25V 150µF 35V 1 × 100µF 6.3V 470µF 2.5V NONE 100pF 12
25
54
20 3
1.5 2 × 10µF 25V 150µF 35V 2 × 100µF 6.3V 330µF 6.3V NONE 100pF 12
28
59
20 3
1.5 2 × 10µF 25V 150µF 35V 4 × 100µF 6.3V
NONE
NONE 100pF 12
26
59
20 3
1.8 2 × 10µF 25V 150µF 35V 3 × 22µF 6.3V 470µF 4V NONE 100pF 5
25
54
30 3
1.8 2 × 10µF 25V 150µF 35V 1 × 100µF 6.3V 470µF 2.5V NONE 100pF 5
25
50
20 3
1.8 2 × 10µF 25V 150µF 35V 2 × 100µF 6.3V 330µF 6.3V NONE 100pF 5
25
50
20 3
1.8 2 × 10µF 25V 150µF 35V 4 × 100µF 6.3V
NONE
NONE 100pF 5
29
60
20 3
1.8 2 × 10µF 25V 150µF 35V 3 × 22µF 6.3V 470µF 4V NONE 100pF 12
25
50
30 3
1.8 2 × 10µF 25V 150µF 35V 1 × 100µF 6.3V 470µF 2.5V NONE 100pF 12
25
50
20 3
1.8 2 × 10µF 25V 150µF 35V 2 × 100µF 6.3V 330µF 6.3V NONE 100pF 12
25
50
20 3
1.8 2 × 10µF 25V 150µF 35V 4 × 100µF 6.3V
NONE
NONE 100pF 12
29
60
20 3
2.5 2 × 10µF 25V 150µF 35V 1 × 100µF 6.3V 470µF 4V NONE 220pF 5
25
50
30 3
2.5 2 × 10µF 25V 150µF 35V 2 × 100µF 6.3V 330µF 6.3V NONE 220pF 5
25
50
30 3
2.5 2 × 10µF 25V 150µF 35V 3 × 22µF 6.3V 470µF 4V NONE 220pF 5
25
50
30 3
2.5 2 × 10µF 25V 150µF 35V 4 × 100µF 6.3V
NONE
NONE 220pF 5
25
50
25 3
2.5 2 × 10µF 25V 150µF 35V 1 × 100µF 6.3V 470µF 4V NONE 220pF 12
25
50
30 3
2.5 2 × 10µF 25V 150µF 35V 3 × 22µF 6.3V 470µF 4V NONE 220pF 12
25
50
30 3
2.5 2 × 10µF 25V 150µF 35V 2 × 100µF 6.3V 330µF 6.3V NONE 220pF 12
25
50
30 3
2.5 2 × 10µF 25V 150µF 35V 4 × 100µF 6.3V
NONE
NONE 220pF 12
27
54
25 3
3.3 2 × 10µF 25V 150µF 35V 2 × 100µF 6.3V 330µF 6.3V NONE 220pF 7
32
64
30 3
3.3 2 × 10µF 25V 150µF 35V 1 × 100µF 6.3V 470µF 4V NONE 220pF 7
30
60
30 3
3.3 2 × 10µF 25V 150µF 35V 3 × 22µF 6.3V 470µF 4V NONE 220pF 7
30
60
35 3
3.3 2 × 10µF 25V 150µF 35V 4 × 100µF 6.3V
NONE
NONE 220pF 7
32
64
25 3
3.3 2 × 10µF 25V 150µF 35V 1 × 100µF 6.3V 470µF 4V NONE 220pF 12
38
58
30 3
3.3 2 × 10µF 25V 150µF 35V 3 × 22µF 6.3V 470µF 4V NONE 220pF 12
30
60
35 3
3.3 2 × 10µF 25V 150µF 35V 2 × 100µF 6.3V 330µF 6.3V NONE 220pF 12
30
60
30 3
3.3 2 × 10µF 25V 150µF 35V 4 × 100µF 6.3V
NONE
NONE 220pF 12
32
64
25 3
5 1 × 10µF 25V 150µF 35V 4 × 100µF 6.3V
NONE
NONE 100pF 15
80
160
25 3
5 1 × 10µF 25V 150µF 35V 4 × 100µF 6.3V
NONE
NONE 100pF 20
80
160
25 3
4602hvf
11
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet LTM4602HV.PDF ] | |
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