Datasheet LTM4624 (Analog Devices)

LTM4624 14VIN, 4A Step-Down DC/DC µModule Regulator
FEATURES DESCRIPTION
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Complete Solution in <1cm2 (Single-Sided PCB) or
The LTM®4624 is a complete 4A step-down switching mode
0.5cm2 (Dual-Sided PCB)
µModule® (micromodule) regulator in a tiny 6.25mm × n Wide Input Voltage Range: 4V to 14V 6.25mm × 5.01mm BGA package. Included in the package n Input Voltage Down to 2.375V with External Bias are the switching controller, power FETs, inductor and sup- n 0.6V to 5.5V Output Voltage port components. Operating over an input voltage range of n 4A DC, 5A Peak Output Current 4V to 14V or 2.375V to 14V with an external bias supply, n ±2% Total DC Output Voltage Error the LTM4624 supports an output voltage range of 0.6V to n Current Mode Control, Fast Transient Response 5.5V, set by a single external resistor. Its high efficiency n Output Voltage Tracking design delivers 4A continuous, 5A peak, output current. n Selectable Discontinuous Mode Only bulk input and output capacitors are needed. n Power Good Indicator The LTM4624 supports selectable discontinuous mode n Overvoltage, Overcurrent and Overtemperature operation and output voltage tracking for supply rail se- Protection quencing. Its high switching frequency and current mode n 6.25mm × 6.25mm × 5.01mm BGA Package control enable a very fast transient response to line and load changes without sacrificing stability.
APPLICATIONS
Fault protection features include overvoltage, overcurrent n Telecom, Datacom, Networking and Industrial and overtemperature protection. Equipment The LTM4624 is available with SnPb (BGA) or RoHS n Medical Diagnostic Equipment compliant terminal finish. n Data Storage Rack Units and Cards n Test and Debug Systems L, LT, LTC, LTM, µModule, LTpowerCAD, Linear Technology and the Linear logo are registered trademarks of Analog Devices, Inc. All other trademarks are the property of their respective owners.
Click to view associated TechClip Videos. TYPICAL APPLICATION 4A, 1.5V Output DC/DC µModule Step-Down Regulator 12VIN Efficiency vs Load Current
100 V VOUT IN 95 4V TO 14V V V 1.5V 10µF IN OUT 47µF 4A 16V SVIN 6.3V 90 RUN LTM4624 85 INTVCC PGOOD MODE COMP 80 TRACK/SS FB 75 0.1µF FREQ 70 GND SGND 40.2k EFFICIENCY (%) VOUT = 5V 65 VOUT = 3.3V VOUT = 2.5V 4624 TA01a 60 VOUT = 1.5V 55 VOUT = 1.2V VOUT = 1V 50 0 1 2 3 4 LOAD CURRENT (A) 4624 TA01b 4624fd For more information www.linear.com/LTM4624 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 Package Description Package Photo Design Resources Related Parts