Rainbow-electronics MAX15058 User Manual download pdf

_______________________________________________________________ Maxim Integrated Products 1

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

High-Efficiency, 3A, Current-Mode

Synchronous, Step-Down Switching Regulator

MAX15058

General Description

The MAX15058 high-efficiency, current-mode, synchro-

nous step-down switching regulator with integrated

power switches delivers up to 3A of output current.

The device operates from 2.7V to 5.5V and provides an

output voltage from 0.6V up to 94% of the input voltage,

making the device ideal for distributed power systems,

portable devices, and preregulation applications.

The MAX15058 utilizes a current-mode control archi-

tecture with a high-gain transconductance error ampli-

fier. 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 MAX15058 offers selectable skip-mode functional-

ity to reduce current consumption and achieve a higher

efficiency at light output load. The low R

DS(ON)

inte-

grated switches ensure high efficiency at heavy loads

while minimizing critical inductances, making the layout

design a much simpler task with respect to discrete

solutions. Utilizing a simple layout and footprint assures

first-pass success in new designs.

The MAX15058 features a 1MHz, factory-trimmed, fixed-

frequency PWM mode operation. The high switching fre-

quency, along with the PWM current-mode architecture,

allows for a compact, all-ceramic capacitor design.

The MAX15058 offers a capacitor-programmable soft-

start reducing inrush current, startup into PREBIAS

operations, and a PGOOD open-drain output that can be

used as an interrupt and for power sequencing.

The MAX15058 is available in a 9-bump (3 x 3 array),

1.5mm x 1.5mm WLP package and is specified over the

-40NC to +85NC temperature range.

Applications

Distributed Power Systems

Preregulators for Linear Regulators

Portable Devices

Notebook Power

Server Power

IP Phones

Features

S Internal 30mI (typ) R

DS(ON)

High-Side and 18mI

(typ) Low-Side MOSFETs at 5V

S Continuous 3A Output Current Over Temperature

S 95% Efficiency with 3.3V Output at 3A

S 1% Output Voltage Accuracy Over Load, Line, and

Temperature

S Operates from 2.7V to 5.5V Supply

S Cycle-by-Cycle Overcurrent Protection

S Adjustable Output from 0.6V to Up to 0.94 x V

S Programmable Soft-Start

S Factory-Trimmed, 1MHz Switching Frequency

S Stable with Low-ESR Ceramic Output Capacitors

S Safe-Startup Into Prebiased Output

S External Reference Input

S Skip-Mode Functionality

S Enable Input/Power-Good Output

S Fully Protected Against Overcurrent and

Overtemperature

S Input Undervoltage Lockout

19-5478; Rev 2; 7/11

+Denotes a lead(Pb)-free/RoHS-compliant package.

Ordering Information

Typical Operating Circuit

EVALUATION KIT

AVAILABLE

PART TEMP RANGE PIN-PACKAGE

MAX15058EWL+ -40°C to +85°C 9 WLP

IN LX

OUTPUT

1.8V/3A

INPUT

2.8V TO 5.5V

GND

COMP

PGOOD

SKIP

SS/REFIN

OFF

ENABLE

MAX15058

1 2 3 4 5 6 ... 20 21

Summary of Contents

Page 1 - MAX15058

_______________________________________________________________ Maxim Integrated Products 1For pricing, delivery, and ordering information, pleas

Page 2

High-Efficiency, 3A, Current-Mode Synchronous, Step-Down Switching RegulatorMAX1505810 ___________________________________________________________

Page 3

High-Efficiency, 3A, Current-Mode Synchronous, Step-Down Switching RegulatorMAX15058__________________________________________________________________

Page 4

High-Efficiency, 3A, Current-Mode Synchronous, Step-Down Switching RegulatorMAX1505812 ___________________________________________________________

Page 5

High-Efficiency, 3A, Current-Mode Synchronous, Step-Down Switching RegulatorMAX15058__________________________________________________________________

Page 6

High-Efficiency, 3A, Current-Mode Synchronous, Step-Down Switching RegulatorMAX1505814 ___________________________________________________________

Page 7

High-Efficiency, 3A, Current-Mode Synchronous, Step-Down Switching RegulatorMAX15058__________________________________________________________________

Page 8

High-Efficiency, 3A, Current-Mode Synchronous, Step-Down Switching RegulatorMAX1505816 ___________________________________________________________

Page 9

High-Efficiency, 3A, Current-Mode Synchronous, Step-Down Switching RegulatorMAX15058__________________________________________________________________

Page 10

High-Efficiency, 3A, Current-Mode Synchronous, Step-Down Switching RegulatorMAX1505818 ___________________________________________________________

Page 11 - Detailed Description

High-Efficiency, 3A, Current-Mode Synchronous, Step-Down Switching RegulatorMAX15058__________________________________________________________________

Page 12 - SW LOAD IN

High-Efficiency, 3A, Current-Mode Synchronous, Step-Down Switching RegulatorMAX150582 ____________________________________________________________

Page 13 - Output Capacitor Selection

High-Efficiency, 3A, Current-Mode Synchronous, Step-Down Switching RegulatorMAX1505820 ___________________________________________________________

Page 14 - SW IN SW OUT

High-Efficiency, 3A, Current-Mode Synchronous, Step-Down Switching RegulatorMAX15058Maxim cannot assume responsibility for use of any circuitry other

Page 15

High-Efficiency, 3A, Current-Mode Synchronous, Step-Down Switching RegulatorMAX15058__________________________________________________________________

Page 16

High-Efficiency, 3A, Current-Mode Synchronous, Step-Down Switching RegulatorMAX150584 ____________________________________________________________

Page 17 - Compensation Circuitry

High-Efficiency, 3A, Current-Mode Synchronous, Step-Down Switching RegulatorMAX15058__________________________________________________________________

Page 18 - Setting the Soft-Start Time

High-Efficiency, 3A, Current-Mode Synchronous, Step-Down Switching RegulatorMAX150586 ____________________________________________________________

Page 19 - Layout Procedure

High-Efficiency, 3A, Current-Mode Synchronous, Step-Down Switching RegulatorMAX15058__________________________________________________________________

Page 20

High-Efficiency, 3A, Current-Mode Synchronous, Step-Down Switching RegulatorMAX150588 ____________________________________________________________

Page 21

High-Efficiency, 3A, Current-Mode Synchronous, Step-Down Switching RegulatorMAX15058__________________________________________________________________

Comments to this Manuals

No comments

Rainbow-electronics MAX15058 User Manual

Browse online or download User Manual for Sensors Rainbow-electronics MAX15058. Rainbow Electronics MAX15058 User Manual

Summary of Contents

Comments to this Manuals

Related products and manuals for Sensors Rainbow-electronics MAX15058