LTM4633

1

4633f

Typical applicaTion

FeaTures

DescripTion

Triple 10A Step-Down

DC/DC µModule Regulator

bines three complete 10A switching mode DC/DC con-

verters into one small package. Included in the package

are the switching controllers, power FETs, inductors, and

most support components. The LTM4633’s three regula-

tors operate from 4.7V to 16V input rail(s) or 2.375V to

to 5.5V. Each output is set by one external resistor.

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, multiphase parallel operation

for supply rail sequencing.

Fault protection features include overvoltage protection,

overcurrent protection and temperature monitoring. The

power module is offered in a space saving, thermally

enhanced 15mm

× 15mm × 5.01mm BGA package. The

LTM4633 is RoHS compliant with Pb-free finish.

12V Input to 1.0V, 1.5V and 3.3V Output Regulator

Efficiency vs Load Current

applicaTions

n

Three Independent 10A DC Output Current Regulator

Channels

n

Input Voltage Range: 4.7V to 16V

n

2.375V to 16V with External 5V Bias

n

n

n

±1.5% Maximum Total DC Output Error

n

Current Mode Control/Fast Transient Response

n

Frequency Synchronization

n

Output Overvoltage and Overcurrent Protection

n

Multiphase Operation with Current Sharing

n

General Purpose Temperature Monitors

n

Soft-Start/Voltage Tracking

n

Power Good Monitors

n

15mm

× 15mm × 5.01mm BGA Package

n

Telecom, Networking and Industrial Equipment

n

High Density Point of Load Regulation

L

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

registered trademarks and PowerPath and LTpowerCAD are 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,

6580258 and 8163643. Other patents pending.

242k

1.0V

10A

69.8k

1.5V

10A

19.1k

3.3V

10A

10k

13.3k

10k

4.7µF

6.3V

CNTL_PWR

RUN1

RUN2

RUN3

TK/SS1

TK/SS2

TK/SS3

PGOOD12

PGOOD3

4633 TA01a

GND

MODE/PLLIN

SGND

LTM4633

FREQ/PLLLPF

LOAD CURRENT (A)

0

85

90

95

8

4633 TA01b

80

75

70

1

2

3

4

5

6

7

9 10