LTM4600 Datasheet PDF - Linear Technology
Part Number | LTM4600 | |
Description | High Efficiency DC/DC Module | |
Manufacturers | Linear Technology | |
Logo | ||
There is a preview and LTM4600 download ( pdf file ) link at the bottom of this page. Total 24 Pages |
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FEATURES
■ Complete Switch Mode Power Supply
■ Wide Input Voltage Range: 4.5V to 20V
■ 10A DC, 14A Peak Output Current
■ Parallel Two µModules™ for 20A Output Current
■ 0.6V to 5V Output Voltage
■ 1.5% Regulation
■ Ultrafast Transient Response
■ Current Mode Control
■ Pb-Free (e4) RoHS Compliant Package
■ Up to 92% Efficiency
■ Programmable Soft-Start
■ Output Overvoltage Protection
■ Optional Short-Circuit Shutdown Timer
■ Small Footprint, Low Profile (15mm × 15mm ×
2.8mm) Surface Mount LGA Package
U
APPLICATIO S
■ Telecom and Networking Equipment
■ Servers
■ Industrial Equipment
■ Point of Load Regulation
■ Other General Purpose Step Down DC/DC
, LTC, LT 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.
Electrical Specifications Subject to Change
LTM4600
10A High Efficiency
DC/DC µModule
DESCRIPTIO
The LTM®4600 is a complete 10A, DC/DC step down power
supply. Included in the package are the switching control-
ler, power FETs, inductor, and all support components.
Operating over an input voltage range of 4.5V to 20V, the
LTM4600 supports an output voltage range of 0.6V to 5V,
set by a single resistor. This high efficiency design delivers
10A continuous current (14A 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 LTM4600 is packaged in a thermally enhanced, compact
(15mm × 15mm) and low profile (2.8mm) over-molded
Land Grid Array (LGA) package suitable for automated
assembly by standard surface mount equipment. The
LTM4600 is Pb-free and RoHS certified.
TYPICAL APPLICATIO
10A µModule Power Supply with 4.5V to 20V Input
VIN
4.5V TO 20V
VIN VOUT
CIN
LTM4600
COUT
VOUT
1.5V
10A
VOSET
PGND SGND
66.5k
4600 TA01a
Efficiency vs Load Current
with 12VIN (FCB = 0)
100
90
80
70
60
50
40
0.6VOUT
1.2VOUT
1.5VOUT
30 2.5VOUT
3.3VOUT
20
0 2 4 6 8 10 12
LOAD CURRENT (A)
4600 TA01b
PRERELEASE
4600p
1
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TYPICAL PERFOR A CE CHARACTERISTICS
Start-Up, IOUT = 0A
(See Figure 17)
VOUT
(0.5V/DIV)
IIN
(0.5A/DIV)
Start-Up, IOUT = 10A
(Resistive Load) (See Figure 17)
VOUT
(0.5V/DIV)
IIN
(0.5A/DIV)
200µs/DIV
VIN = 12V
VOUT = 1.5V
COUT = 200µF
NO EXTERNAL SOFT-START CAPACITOR
4600 G10
200µs/DIV
VIN = 12V
VOUT = 1.5V
COUT = 200µF
NO EXTERNAL SOFT-START CAPACITOR
4600 G11
LTM4600
Short-Circuit Protection,
IOUT = 0A (See Figure 17)
VOUT
(0.5V/DIV)
IIN
(0.2A/DIV)
20µs/DIV
VIN = 12V
VOUT = 1.5V
COUT = 2× 200µF/X5R
NO EXTERNAL SOFT-START CAPACITOR
4600 G12
Short-Circuit Protection,
IOUT = 10A (See Figure 17)
VOUT
(0.5V/DIV)
IIN
(0.5A/DIV)
20µs/DIV
VIN = 12V
VOUT = 1.5V
COUT = 2× 200µF/X5R
NO EXTERNAL SOFT-START CAPACITOR
4600 G13
Current Limit with 12VIN
18
16
14
12
10
8
6
4
2
0
0123456
OUTPUT VOLTAGE (V)
4600 G14
Current Limit with 9VIN
18
16
14
12
10
8
6
4
2
0
0123456
OUTPUT VOLTAGE (V)
4600 G15
Current Limit with 5VIN
18
16
14
12
10
8
6
4
2
0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
OUTPUT VOLTAGE (V)
4600 G16
VIN to VOUT Stepdown Ratio
5.5
5V
5.0
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
VIN (V)
15
20
4600 G17
PRERELEASE
4600p
5
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for LTM4600 electronic component. |
Information | Total 24 Pages | |
Link URL | [ Copy URL to Clipboard ] | |
Download | [ LTM4600.PDF Datasheet ] |
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