LTM4607

1

4607f

6

0

5

4

3

2

1

6

100

99

98

97

96

95

94

93

92

91

90

21

31

4607 TA01b

11

16

26

36

f = 200kHz

TYPICAL APPLICATION

FEATURES

APPLICATIONS

DESCRIPTION

Buck-Boost DC/DC µModule

boost power supply. Included in the package are the

switching controller, power FETs, and support components.

Operating over an input voltage range of 4.5V to 36V, the

LTM4607 supports an output voltage range of 0.8V to

24V, set by a resistor. This high efficiency design delivers

up to 5A continuous current in boost mode (10A in buck

mode). Only the inductor, sense resistor, bulk input and

output capacitors are needed to finish the design.

The low profile package enables utilization of unused space

on the bottom of PC boards for high density point of load

regulation. The high switching frequency and current

mode architecture enable a very fast transient response

to line and load changes without sacrificing stability. The

LTM4607 can be frequency synchronized with an external

clock to reduce undesirable frequency harmonics.

Fault protection features include overvoltage and foldback

current protection. The DC/DC μModule™ is offered in a

small thermally enhanced 15mm × 15mm × 2.8mm LGA

package. The LTM4607 is Pb-free and RoHS compliant.

20V/2.5A Buck-Boost DC/DC μModule with 4.5V to 36V Input

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5A DC (10A DC in Buck Mode)

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High Efficiency Up to 98%

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Current Mode Control

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Power Good Output Signal

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Phase-Lockable Fixed Frequency: 200kHz to 400kHz

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Ultra-Fast Transient Response

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Current Foldback Protection

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Output Overvoltage Protection

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Small, Low Profile Surface Mount LGA Package

(15mm × 15mm × 2.8mm)

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Telecom, Servers and Networking Equipment

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Industrial and Automotive Equipment

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High Power Battery-Operated Devices

, LT, LTC, LTM and Burst Mode 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.

Efficiency and Power Loss vs

Input Voltage

FCB

RUN

SW1

SW2

SS

SGND

PLLIN

LTM4607

4.7μH

4.12k

10μF

35V

330μF

25V

4607 TA01

20V

2.5A

CLOCK SYNC

PGND

4.5V TO 36V

0.1μF

10μF

50V

+

ON/OFF

R2

7mΩ