LTM4600

1

4600fa

LOAD CURRENT (A)

0

50

60

70

6

10

4600 TA01b

40

30

20

24

8

80

90

100

12

10A High Efficiency

DC/DC µModule

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 compliant.

■

Telecom and Networking Equipment

■

Servers

■

Industrial Equipment

■

Point of Load Regulation

■

Complete Switch Mode Power Supply

■

Wide Input Voltage Range: 4.5V to 20V

■

10A DC, 14A Peak Output Current

■

Parallel Two µModule™ DC/DC Converters for 20A

Output Current

■

0.6V to 5V Output Voltage

■

1.5% Output Voltage Regulation

■

Ultrafast Transient Response

■

Current Mode Control

■

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

Pad Finish

■

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

10A µModule Power Supply with 4.5V to 20V Input

APPLICATIO S

FEATURES

DESCRIPTIO

TYPICAL APPLICATIO

, 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.

Efficiency vs Load Current

4600 TA01a

LTM4600

PGND

SGND

4.5V TO 20V

1.5V

10A

66.5k