LTM4601HV

Features:

Complete Switch Mode Power Supply
Wide Input Voltage Range: 4.5V to 28V
12A DC Typical, 14A Peak Output Current
0.6V to 5V Output Voltage
Output Voltage Tracking and Margining
Parallel Multiple ModulesTM for Current Sharing
Differential Remote Sensing for Precision Regulation
PLL Frequency Synchronization
±1.5% Regulation
Current Foldback Protection (Disabled at Start-Up)
Pb-Free (e4) RoHS Compliant Package with Gold Finish Pads
Ultrafast Transient Response
Current Mode Control
Up to 95% Effi ciency at 5VIN, 3.3VOUT
Programmable Soft-Start
Output Overvoltage Protection
Small Footprint, Low Profi le (15mm * 15mm * 2.8mm) Surface Mount LGA Package


Application

Telecom and Networking Equipment
Servers
Industrial Equipment
Point of Load Regulation


Specifications

INTV_CC, DRV_CC, V_{OUT_LCL}, V_OUT (V_OUT 3.3V with
Remote Sense Amp) .................................... 0.3V to 6V
PLLIN, TRACK/SS, MPGM, MARG0, MARG1,
PGOOD, f_SET .............................. 0.3V to INTV_CC + 0.3V
RUN ............................................................. 0.3V to 5V
VFB, COMP ................................................ 0.3V to 2.7V
VIN ............................................................. 0.3V to 28V
VOSNS+, VOSNS ..........................0.3V to INTV_CC 1V
Operating Temperature Range (Note 2) ... 40to 85
Junction Temperature ........................................... 125
Storage Temperature Range ................... 55 to 125


Description

The LTM®4601HV is a complete 1²A step-down switch mode DC/DC power supply with onboard switching controller, MOSFETs, inductor and all support components.

The Module is housed in a small surface mount 15mm *15mm * 2.8mm LGA package. Operating over an input voltage range of 4.5 to 28V, the LTM4601HV supports an output voltage range of 0.6V to 5V as well as output voltage tracking and margining. The high effi ciency design delivers 1²A continuous current (14A peak). Only bulk input and output capacitors are needed to complete the design.

The low profi le (2.8mm) and light weight (1.7g) package of LTM4601HV easily mounts in unused space on the back side of PC boards for high density point of load regulation. The Module can be synchronized with an external clock for reducing undesirable frequency harmonics and allows PolyPhase® operation for high load currents.

A high switching frequency and adaptive on-time current mode architecture deliver a very fast transient response to line and load changes without sacrifi cing stability. An onboard differential remote sense amplifi er can be used to accurately regulate an output voltage independent of load current.