General Description

The MAX15106A/MAX15106B/MAX15106C family of

high-efficiency, current-mode, synchronous step-down

switching regulators with integrated power switches deliver

up to 6A of output current. The regulators operate from

2.7V to 5.5V and provide an output voltage from 0.6V

up to 95 of the input voltage, making the devices ideal

for distributed power systems, portable devices, and preregulation

applications.

The ICs utilize a current-mode control architecture with a

high-gain transconductance error amplifier. The currentmode

control architecture facilitates easy compensation

design and ensures cycle-by-cycle current limit with fast

response to line and load transients.

The low RDS(ON) integrated switches ensure high efficiency

at heavy loads while minimizing critical inductance,

making the layout design a much simpler task with

respect to discrete solutions. The ICs’ simple layout and

footprint assures first-pass success in new designs.

The regulator features 0.9MHz (MAX15106A), 1.0MHz

(MAX15106B), and 1.1MHz (MAX15106C) factorytrimmed

fixed frequency PWM-mode operation. The highswitching

frequency, along with the PWM current-mode

architecture allows for a compact, all-ceramic capacitor

design.

The IC features a capacitor-programmable soft-start

to reduce input inrush current. Internal control circuitry

ensures safe startup into a prebiased output. Power

sequencing is controlled with the enable input and powergood

output.

The IC is available in a 20-bump (4 x 5 array), 2.5mm x

2mm WLP package and is fully specified over the -40°C

to +105°C temperature range.

Applications

● Distributed Power Systems

● DDR Memory

● Base Stations

● Portable Devices

● Notebook Power

● Server Power

Features

● Continuous 6A Output Current

● Efficiency Up to 96

● ±1 Accuracy Over Load, Line, and Temperature

● Operates from a 2.7V to 5.5V Supply

● Adjustable Output from 0.6V to 0.95 × VIN

● Programmable Soft-Start

● Safe Startup into Prebiased Output

● External Reference Input

● 0.9MHz, 1.0MHz, and 1.1MHz Switching Frequency

Options

● Stable with Low-ESR Ceramic Output Capacitors

● Forced PWM Mode

● Enable Input and Power-Good Output for Power-

Supply Sequencing

● Cycle-by-Cycle Overcurrent Protection

● Fully Protected Features Against Overcurrent and

Overtemperature

● Input Undervoltage Lockout

● 20-Bump (4 x 5 Array), 2.5mm x 2mm, WLP Package