Linear Technology LTM4608AEV DEMO BOARD, 2.7Vinmin, 8A DC/DC µModule Regulator DC1400A DC1400A Ficha De Dados

LTM4608A

1

4608afd

Low V

IN

, 8A DC/DC µModule

Regulator with Tracking, Margining, 

and Frequency Synchronization

The LTM

®

4608A is a complete 8A switch mode DC/DC 

power supply with ±1.75% total output voltage error. In-

cluded in the package are the switching controller, power 

FETs, inductor and all support components. Operating 

over an input voltage range of 2.7V to 5.5V, the LTM4608A 

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

single external resistor. This high efficiency design delivers 

up to 8A continuous current (10A peak). Only bulk input 

and output capacitors are needed to complete the design. 
The low profile package (2.82mm) enables utilization 

of unused space on the back side of PC boards for high 

density point-of-load regulation. The 0.630mm LGA pads 

with 1.27mm pitch simplify PCB layout by providing stan-

dard trace routing and via placement. The high switching 

frequency and current mode architecture enable a very 

fast transient response to line and load changes without 

sacrificing stability. The device supports frequency syn-

chronization, programmable multiphase and/or spread 

spectrum operation, output voltage tracking for supply 

rail sequencing and voltage margining.
Fault protection features include overvoltage protection, 

overcurrent protection and thermal shutdown. The power 

module is offered in a compact and thermally enhanced 

9mm × 15mm × 2.82mm surface mount LGA package. 

The LTM4608A is RoHS compliant with Pb-free finish.

®

n

  Complete Standalone Power Supply

n

 ±1.75% Total DC Output Error (–55°C to 125°C)

n

  2.7V to 5.5V Input Voltage Range

n

  8A DC, 10A Peak Output Current

n

  0.6V Up to 5V Output

n

  Output Voltage Tracking and Margining

n

  Power Good Tracks Margining

n

  Multiphase Operation

n

  Parallel Current Sharing

n

  Onboard Frequency Synchronization

n

  Spread Spectrum Frequency Modulation

n

  Overcurrent/Thermal Shutdown Protection

n

  Current Mode Control/Fast Transient Response

n

  Selectable Burst Mode

®

 Operation

n

  Up to 95% Efficiency

n

  Output Overvoltage Protection

n

  Small, Low Profile 9mm × 15mm × 2.82mm  

LGA Package (0.630mm Pads)

n

  Telecom, Networking and Industrial Equipment

n

  Storage Systems

n

  Point of Load Regulation

L

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

are registered trademarks and LTpowerCAD is a trademark of Linear Technology Corporation. 

All other trademarks are the property of their respective owners. Protected by U.S. Patents 

including 5481178, 6580258, 6304066, 6127815, 6498466, 6611131.

LOAD CURRENT (A)

0

70

EFFICIENCY (%)

75

80

85

90

95

100

2

4

6

8

4608A TA01b

10

V

OUT

 = 1.8V

V

IN

 = 5V

V

IN

 = 3.3V

V

IN

SV

IN

SW
RUN
PLLLPF
TRACK

V

OUT

FB

I

TH

I

THM

PGOOD

MGN

CLKOUT GND

CLKIN

CLKIN

4.87k

4608A TA01a

100µF

10µF

PGOOD

V

OUT

1.8V

V

IN

2.7V TO 5.5V

LTM4608A

SGND