LTM4658

1

Rev. 0

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TYPICAL APPLICATION

FEATURES

DESCRIPTION

DC/DC µModule Regulator

The LTM®4658 is a complete 10A step-down switching

LGA package. Included in the package are the switch-

ing controller, power MOSFETs, inductor and all support

components. Operating over an input voltage range of

2.25V to 5.5V, the LTM4658 supports an output voltage

efficiency design delivers 10A continuous output current.

Only ceramic input and output capacitors are needed.

The LTM4658 employs a Silent Switcher 2 architecture

with internal hot loop bypass capacitors to achieve both

low EMI and high efficiency at high switching frequencies.

The LTM4658 also supports frequency synchronization,

multiphase operation, selectable pulse-skipping mode

operation, output voltage tracking for supply rail sequenc-

ing. Its high switching frequency and a current mode

architecture enables a very fast transient response to line

and load changes without sacrificing stability.

Fault protection features include overvoltage, overcurrent

and overtemperature protection. The LTM4658 is Pb-Free

and RoHS compliant.

Single 10A, 1V Output DC/DC μModule Regulator

APPLICATIONS

n

Tiny Surface Mount, 4mm × 4mm × 4.32mm

LGA Package

n

n

Ultralow EMI Noise

n

Input Voltage Range: 2.25V to 5.5V

n

n

10A DC Output Current

n

Current Mode Control, Fast Transient Response

n

Multiphase Parallel Current Sharing with

Multiple LTM4658s

n

Output Soft-Start with Voltage Tracking

n

External Frequency Synchronization

n

Selectable Pulse-Skipping Mode

n

Power Good Indicator

n

Die Temperature Monitoring Output

n

Overvoltage, Overcurrent and Overtemperature

Protection

n

Telecom, Datacom, Networking System

n

Optical Module

n

Industrial Equipment

n

Point-of-Load Regulation

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Efficiency vs Load Current

LOAD CURRENT (A)

0

1

2

3

4

5

6

7

8

9 10

0

10

20

30

40

50

60

70

80

90

100

0

0.5

1.0

1.5

2.0

2.5

3.0

4658 TA01b

EFFICIENCY

POWER LOSS

FREQ = 2MHz

RUN

FREQ

SSTT

COMP

GND

FB

AGND

MODE/SYNC

60.4k

60.4k

4658 TA01a

100µF

6.3V

22µF

6.3V

1V

10A

2.5V TO 5.5V

LTM4658

PGOOD

0.1µF