The MAX15118 high-efficiency, current-mode step-down regulator with integrated power switches operates from 2.7V to 5.5V and delivers up to 18A of output current in a small 2mm x 3.5mm package. The MAX15118 offers excellent efficiency with skip mode capability at light-load conditions, yet provides unmatched efficiency under heavy load conditions. The combination of small size and high efficiency makes this device suitable for both portable and nonportable applications.The MAX15118 utilizes a current-mode control architecture with a high-gain transconductance error amplifier, which allows a simple compensation scheme and enables a cycle-by-cycle current limit with fast response to line and load transients. A factory-trimmed switching frequency of 1MHz (PWM operation) allows for a compact, all-ceramic capacitor design.Integrated switches with low on-resistance ensure high efficiency at heavy loads while minimizing critical inductances. The MAX15118’s simple layout and footprint assure first-pass success in new designs.Other features of the MAX15118 include a capacitor-programmable soft-start to reduce inrush current, safe startup into a prebiased output, and enable input and power-good output for power sequencing.The regulator is available in a 28-bump (4 x 7), 2.10mm x 3.56mm WLP package, and is fully specified over the -40°C to +85°C extended temperature range.ApplicationsBase StationsDDR MemoryDistributed Power SystemsNotebooksServers

Technical Specifications

Parameters and characteristics for this part

Specification	MAX15118EWI+T

Current - Output	18 A
Frequency - Switching	1 MHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature (Max)	85 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	WLBGA, 28-WFBGA
Package Length	2.07 mm
Package Name	28-WLP
Package Width	3.53 mm
Synchronous Rectifier	Yes
Topology	Buck
Voltage - Input (Max)	5.5 V
Voltage - Input (Min)	2.7 V
Voltage - Output (Max)	5.17 V
Voltage - Output (Min/Fixed)	0.6 V

MAX15118 Series

Part	Output Configuration	Voltage - Input (Max)	Voltage - Output (Min/Fixed)	Number of Outputs	Voltage - Input (Min)	Topology	Synchronous Rectifier	Mounting Type	Operating Temperature (Max)	Operating Temperature (Min)	Output Type	Frequency - Switching	Function	Package / Case	Voltage - Output (Max)	Current - Output	Package Name	Package Length	Package Width	Board Type	Total Output Count	Non-Isolated Output Count	Supplied Contents	Power - Output	Main Purpose	Voltage - Output	Utilized IC / Part	Regulator Topology	Voltage - Input (Minimum)	Voltage - Input (Maximum)	Contents
Analog Devices Inc./Maxim Integrated MAX15118EWI+T	Positive	5.5 V	0.6 V	1	2.7 V	Buck	Yes	Surface Mount	85 °C	-40 °C	Adjustable	1 MHz	Step-Down	28-WFBGA WLBGA	5.17 V	18 A	28-WLP	2.07 mm	3.53 mm
Analog Devices Inc./Maxim Integrated MAX15118EWI+	Positive	5.5 V	0.6 V	1	2.7 V	Buck	Yes	Surface Mount	85 °C	-40 °C	Adjustable	1 MHz	Step-Down	28-WFBGA WLBGA	5.17 V	18 A	28-WLP	2.07 mm	3.53 mm
Analog Devices Inc./Maxim Integrated MAX15118EVKIT#											Non-Isolated	1 MHz				18 A				Fully Populated	1	1 count	Board(s)	27 W	DC/DC Step Down	1.5 V	MAX15118	Buck	2.7 V	5.5 V	Board

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

MAX15118EWI+T | Datasheet

UG-5861: EE-SIM Design and Simulation Environment User Guide

MAX15118 Reliability Data

Package Drawing - Wafer-Level Package 4x7 Bump, High Current Full Array