MAX15108A 查看數據表（PDF） - Maxim Integrated

零件编号

产品描述 (功能)

生产厂家

MAX15108A

High-Efficiency, 8A, Current-Mode Synchronous Step-Down Switching Regulator

Maxim Integrated 

MAX15108A

EVALUATION KIT AVAILABLE

High-Efficiency, 8A, Current-Mode

Synchronous Step-Down Switching Regulator

General Description

The MAX15108A high-efficiency, current-mode, synchro-

nous step-down switching regulator with integrated power

switches delivers up to 8A of output current. The regula-

tor operates from 2.7V to 5.5V and provides an output

voltage from 0.6V up to 95% of the input voltage, making

the device ideal for distributed power systems, portable

devices, and preregulation applications.

The IC utilizes a current-mode control architecture with a

high gain transconductance error amplifier. The current-

mode 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 effi-

ciency at heavy loads while minimizing critical induc-

tance, making the layout design a much simpler task with

respect to discrete solutions. The IC’s simple layout and

footprint assures first-pass success in new designs.

The regulator features a 1MHz, factory-trimmed fixed-

frequency PWM mode operation. The high switching

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 power-

good 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 8A 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 x VIN

●● Programmable Soft-Start

●● Safe Startup into Prebiased Output

●● External Reference Input

●● 1MHz Switching Frequency

●● 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

Typical Operating Circuit

2.7V TO

5.5V

LX

EN

PGND

IN

MAX15108A

FB

INX

PGOOD

COMP

SS

OUTPUT

Ordering Information appears at end of data sheet.

19-6702; Rev 1; 5/16

Share Link: