LTM4648

1

4648f

For more information www.linear.com/LTM4648

Typical applicaTion

FeaTures

DescripTion

µModule Regulator

the package are the switching controller, power FETs,

inductor and all support components. Operating over

an input voltage range of 2.375V to 5.5V, the LTM4648

supports an output voltage range of 0.6V to 5V, set by a

singleexternalresistor.Thishighefficiencydesigndelivers

up to 10A continuous current. Only bulk input and output

capacitors are needed.

High switching frequency and a current mode architecture

enable a very fast transient response to line and load

changes without sacrificing stability. The device supports

frequency synchronization, programmable multiphase

operation and output voltage tracking for supply rail

sequencing.

Fault protection features include overvoltage protec-

tion, overcurrent protection and thermal shutdown. The

LTM4648 is offered in a small 9mm × 15mm × 4.92mm

BGA package. The LTM4648 is RoHS compliant. For up

Efficiency and Power Loss

at 5V and 3.3V Input

with No Heat Sink

2.375V to 5.5V Input, 1.5V Output DC/DC

µModule Regulator

applicaTions

n

10A DC Output Current

n

Input Voltage Range: 2.375V to 5.5V

n

Output Voltage Range: 0.6V to 5V

n

No Heat Sink or Current Derating Up to 85°C

Ambient Temperature

n

±1.5% Maximum Total DC Output Error

n

Multiphase Operation with Current Sharing

n

Remote Sense Amplifier

n

Built-In Temperature Monitor

n

Operation for High Efficiency at Light Load

n

Soft-Start/Voltage Tracking

n

Protection: Output Overvoltage and Overcurrent

Foldback

n

n

9mm × 15mm × 4.92mm BGA Package

n

Telecom, Networking and Industrial Equipment

n

Point of Load Regulation

L

, LT, LTC, LTM, Burst Mode, µModule, PolyPhase, Linear Technology and the Linear logo are

registered trademarks of Linear Technology Corporation. All other trademarks are the property

of their respective owners. Protected by U.S. Patents, including 5481178, 5705919, 5929620,

6100678, 6144194, 6177787, 6304066 and 6580258. Other patents pending.

MODE

TRACK/SS

DIFFP

DIFFN

DIFFOUT

LTM4648

GND

0.1µF

100µF

6.3V

×2

6.65k

22µF

10V

×2

2.375V TO 5.5V

1.5V

10A

4648 TA01a

PINS NOT USED

IN THIS CIRCUIT:

SW

RUN

PHMODE

TEMP

COMP

PGOOD

CLKIN

CLKOUT

LOAD CURRENT (A)

0

90

95

100

8

4648 TA01b

85

80

2

4

6

10

75

70

65

2.0

2.4

2.8

1.6

1.2

0.8

0.4

0

AMBIENT TEMPERATURE (°C)

0

0

2

4

6

8

12

20

40

60

80

4648 TA01c

100

120

10

400LFM

200LFM

0LFM