LINEAR TECHNOLOGY - LTM4600HV Data Manual

Electrical Specifications Subject to Change

LTM4600HV

10A, 28VIN High Effi ciency

DC/DC µModule

FEATURES DESCRIPTIO

■ Complete Switch Mode Power Supply The LTM®4600HV is a complete 10A, DC/DC step down ■ Wide Input Voltage Range: 4.5V to 28V power supply with up to 28V input operation. Included ■ 10A DC, 12A Peak Output Current in the package are the switching controller, power FETs, ■ Parallel Two µModules™ for 20A Output Current inductor, and all support components. Operating over ■ 0.6V to 5V Output Voltage an input voltage range of 4.5V to 28V, the LTM4600HV ■ 1.5% Regulation of Output Voltage supports an output voltage range of 0.6V to 5V, set by a ■ Ultrafast Transient Response single resistor. This high effi ciency design delivers 10A ■ Current Mode Control continuous current (12A peak), needing no heat sinks or ■ Up to 92% Effi ciency airfl ow to meet power specifi cations. Only bulk input and ■ Programmable Soft-Start output capacitors are needed to fi nish the design. ■ Output Overvoltage Protection

The low profi le package (2.8mm) enables utilization of

■ Optional Short-Circuit Shutdown Timer

unused space on the bottom of PC boards for high density

■ Pb-Free (e4) Ro HS Compliant Package

point of load regulation. High switching frequency and an

■ Small Footprint, Low Profi le (15mm × 15mm ×

adaptive on-time current mode architecture enables a very

2.8mm) LGA Package

EF FI CI EN CY fast transient response to line and load changes without

sacrifi cing stability. Fault protection features include APPLICATIO integrated overvoltage and short circuit protection with a defeatable shutdown timer. A built-in soft-start timer is

■ Telecom and Networking Equipment

adjustable with a small capacitor.

■ Servers

The LTM4600HV is packaged in a thermally enhanced,

■ Industrial Equipment

compact (15mm × 15mm) and low profi le (2.8mm) over-

■ Point of Load Regulation

molded Land Grid Array (LGA) package suitable for auto-

■ Other General Purpose Step Down DC/DC

mated assembly by standard surface mount equipment.

, LTC, LT and LTM are registered trademarks of Linear Technology Corporation. µModule is a trademark of Linear Technology Corporation. All other trademarks are the The LTM4600HV is Pb-free and Ro HS compliant. property of their respective owners.

TYPICAL APPLICATIO

Effi ciency vs Load Current with 24VIN (FCB = 0)

10A µModule Power Supply with 4.5V to 28V Input

VIN VOUT 2.5V*

4.5V TO 28V

10ACOUT

ABSMAX CIN

LTM4600HV

VOSET

PGND SGND

1.5VOUT 4600hv TA01a 1.8VOUT 2.5VOUT *REVIEW DE-RATING CURVE AT 3.3VOUT THE HIGHER INPUT VOLTAGE 5VOUT

LOAD CURRENT (A)

4600HV TA01b

4600hvp

PRERELEASE