Datasheet LTM4616 (Analog Devices)

LTM4616 Dual 8A per Channel Low VIN DC/DC µModule Regulator
Features Description
n
Complete Dual DC/DC Regulator System
The LTM®4616 is a complete dual 2-phase 8A per channel n
Input Voltage Range: 2.7V to 5.5V
switch mode DC/DC power regulator system in a 15mm n
Dual 8A Outputs, or Single 16A Output with a 0.6V
× 15mm surface mount LGA or BGA package. Included
to 5V Range
in the package are the switching controller, power FETs, n
Output Voltage Tracking and Margining
inductor and all support components. Operating from an n
±1.75% Total DC Output Error (– 55°C to 125°C)
input voltage range of 2.7V to 5.5V, the LTM4616 supports n
Current Mode Control/Fast Transient Response
two outputs within a voltage range of 0.6V to 5V, each set n
Power Good Tracking and Margining
by a single external resistor. This high efficiency design n
Overcurrent/Thermal Shutdown Protection
delivers up to 8A continuous current (10A peak) for each n
Onboard Frequency Synchronization
output. Only bulk input and output capacitors are needed, n
Spread Spectrum Frequency Modulation
depending on ripple requirement. The part can also be n
Multiphase Operation
configured for a 2-phase single output at up to 16A. n Selectable Burst Mode® Operation The low profile package enables utilization of unused space n Output Overvoltage Protection on the back side of PC boards for high density point-of- n SnPb (BGA) or RoHS Compliant (LGA and BGA) load regulation. Finish n Small Surface Mount Footprint, Low Profile Fault protection features include overvoltage protection, (15mm × 15mm × 2.82mm) LGA and overcurrent protection and thermal shutdown. The power (15mm × 15mm × 3.42mm) BGA Packages module is offered in space saving and thermally enhanced 15mm × 15mm × 2.82mm LGA and 15mm × 15mm ×
applications
3.42mm BGA packages. The LTM4616 is available with SnPb (BGA) or RoHS compliant terminal finish. n Telecom, Networking and Industrial Equipment n
Different Combinations of Input and Output
Storage and ATCA, PCI Express Cards n
Number of Inputs Number of Outputs I
Battery Operated Equipment
OUT (MAX)
2 2 8A, 8A 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. 2 1 16A All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 5481178, 6580258, 6304066, 6127815, 6498466, 6611131, 6724174. 1 2 8A, 8A 1 1 16A
typical application Efficiency vs Load Current Dual Output DC/DC µModule
®
Regulator
95 5VIN 3.3VOUT VIN1 5V V VOUT1 IN1 VOUT1 90 3.3V/8A FB1 5VIN 2.5VOUT 10µF 100µF LTM4616 2.21k 85 ITHM1 VIN2 3.3V TO 5V V V V OUT2 IN2 OUT2 80 2.5V/8A EFFICIENCY (%) FB2 10µF 3.09k 100µF 75 ITHM2 GND1 GND2 70 4616 TA01a 0 2 4 6 8 LOAD CURRENT (A) 4616 TA01b 4616ff For more information www.linear.com/LTM4616 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Pin Functions Simplified Block Diagram Operation Applications Information Package Description Revision History Package Photo Related Parts Design Resources