Datasheet LTM4603HV (Analog Devices)

LTM4603HV 6A, 28VIN DC/DC µModule with PLL, Output Tracking and Margining
FeaTures DescripTion
n
Complete Switch Mode Power Supply
The LTM®4603HV is a complete 6A step-down switch mode n
Wide Input Voltage Range: 4.5V to 28V
DC/DC power supply with onboard switching controller, n
6A DC Typical, 8A Peak Output Current
MOSFETs, inductor and all support components. The n
0.6V to 5V Output Voltage
µModuleTM is housed in a small surface mount 15mm × n
Output Voltage Tracking and Margining
15mm × 2.82mm LGA package. Operating over an input n
Remote Sensing for Precision Regulation
voltage range of 4.5 to 28V, the LTM4603HV supports n
Typical Operating Frequency: 1MHz
an output voltage range of 0.6V to 5V as well as output n
PLL Frequency Synchronization
voltage tracking and margining. The high efficiency design n
1.5% Regulation
delivers 6A continuous current (8A peak). Only bulk input n
Current Foldback Protection (Disabled at Start-Up)
and output capacitors are needed to complete the design. n Pin Compatible with the LTM4601/LTM4601HV/ The low profile (2.82mm) and light weight (1.7g) package LTM4603 easily mounts on the unused space on the back side of n Ultrafast Transient Response PC boards for high density point of load regulation. The n Current Mode Control µModule can be synchronized with an external clock for n Up to 93% Efficiency at 5VIN, 3.3VOUT reducing undesirable frequency harmonics and allows n Programmable Soft-Start PolyPhase® operation for high load currents. n Output Overvoltage Protection n RoHS Compliant Package with Gold Finish Pads (e4) A high switching frequency and adaptive on-time current n Small Footprint, Low Profile (15mm × 15mm × mode architecture deliver a very fast transient response 2.82mm) Surface Mount LGA Package to line and load changes without sacrificing stability. An onboard remote sense amplifier can be used to accurately regulate an output voltage independent of load current.
applicaTions
L, LT, LTC, LTM, Linear Technology, the Linear logo, µModule and PolyPhase are registered n Telecom and Networking Equipment 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 n Servers 5481178, 5847554, 6580258, 6304066, 6476589, 6774611, 6677210. n Industrial Equipment n Point of Load Regulation
Typical applicaTion 2.5V/6A with 4.5V to 28V Input µModule Regulator Efficiency vs Load Current with 24VIN
CLOCK SYNC 100 VIN TRACK/SS CONTROL 4.5V TO 28V V 90 IN PLLIN TRACK/SS VOUT PGOOD VOUT 2.5V 100pF 6A 80 VFB ON/OFF RUN MARG0 MARGIN COMP MARG1 CONTROL 70 LTM4603HV COUT CIN INTVCC VOUT_LCL RSET DRV EFFICIENCY (%) CC DIFFVOUT 19.1k 60 MPGM V + OSNS 24VIN, 1.8VOUT V – R1 24V OSNS 50 IN, 2.5VOUT 392k 24V SGND PGND fSET IN, 3.3VOUT 24VIN, 5VOUT 5% MARGIN 40 0 1 2 3 4 5 6 7 4603HV TA01a LOAD CURRENT (A) 4603HV TA01b 4603hvfa For more information www.linear.com/LTM4603HV 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Typical Applications Package Description Revision History Related Parts