Linear Technology DC1084A-A LTM4602 20V, 6A Step-Down μModule Regulator DC1084A-A DC1084A-A Datenbogen

LTM4602

1

4602fa

6A High Effi ciency 

DC/DC µModule

The LTM

®

4602 is a complete 6A 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 
LTM4602 supports an output voltage range of 0.6V to 5V, 
set by a single resistor. This high effi ciency design delivers 
6A continuous current (8A peak), needing no heat sinks or 
airfl ow to meet power specifi cations. Only bulk input and 
output capacitors are needed to fi nish the design.

The low profi le 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 
sacrifi cing 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 LTM4602 is packaged in a thermally enhanced, compact 
(15mm × 15mm) and low profi le (2.8mm) over-molded 
Land Grid Array (LGA) package suitable for automated as-
sembly by standard surface mount equipment. For the 4.5V 
to 28V input range version, refer to the LTM4602HV.

n

  Telecom and Networking Equipment

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 Servers

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 Industrial Equipment

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  Point of Load Regulation

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  Complete Switch Mode Power Supply

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  Wide Input Voltage Range: 4.5V to 20V

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  6A DC, 8A Peak Output Current

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  0.6V to 5V Output Voltage

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  1.5% Output Voltage Regulation

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  Ultrafast Transient Response

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  Current Mode Control

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  Pb-Free (e4) RoHS Compliant Package with Gold-

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  Pin Compatible with the LTM4600

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  Up to 92% Effi ciency

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 Programmable Soft-Start

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  Output Overvoltage Protection

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  Optional Short-Circuit Shutdown Timer

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  See the LTM4602HV for Operation Up to 28V

IN

 

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  Small Footprint, Low Profi le (15mm × 15mm × 

2.8mm) Surface Mount LGA Package

TM

V

IN

C

IN

4602 TA01a

LTM4602

PGND SGND

V

OUT

V

OSET

V

IN

4.5V TO 20V

V

OUT

1.5V
6A

C

OUT

R

SET

66.5k

LOAD CURRENT (A)

0

0

EFFICIENCY (%)

10

30

40

50

100

70

2

4

4602 TA01b

20

80

90

60

6

8

0.8V

OUT

1.2V

OUT

1.5V

OUT

1.8V

OUT

2.5V

OUT

3.3V

OUT

3.3V

OUT

(950kHz)*

*950kHz INSTEAD OF 1.3MHz
INCREASES 3.3V EFFICIENCY 2%

L, 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.