MAX15021 Maxim Integrated Products, MAX15021 Datasheet

MAX15021

Manufacturer Part Number

MAX15021

Description

Step-Down DC-DC Regulator

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX15021.pdf (23 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

MAX15021ATI+

Manufacturer:

Maxim Integrated Products

Quantity:

135

Company:

Meier Automation Equipment Co., Limited

Part Number:

MAX15021ATI+

Manufacturer:

MAXIM/美信

Quantity:

20 000

Company:

BOSTOCK HK LIMITED

Part Number:

MAX15021ATI+T

Manufacturer:

MAXIM

Quantity:

Current page: 1 of 23
Download datasheet (339Kb)

www.datasheet4u.com

The MAX15021 is a dual-output, pulse-width-modulated

(PWM), step-down DC-DC regulator with tracking (coin-

cident and ratiometric) and sequencing options. The

device operates from 2.5V to 5.5V and each output can

be adjusted from 0.6V to the input supply (V

MAX15021 delivers up to 4A (regulator 1) and 2A (reg-

ulator 2) of output current. This device offers the ability

to adjust the switching frequency from 500kHz to 4MHz

and provides the capability of optimizing the design in

terms of size and performance.

The MAX15021 utilizes a voltage-mode control scheme

with external compensation to provide good noise

immunity and maximum flexibility in selecting inductor

values and capacitor types. The dual switching regula-

tors operate 180° out-of-phase, thereby reducing the

RMS input ripple current and thus the size of the input

bypass capacitor significantly.

The MAX15021 offers the ability to track (coincident or

ratiometric) or sequence during power-up and power-

down operation. When sequencing, it powers up glitch-

free into a prebiased output.

Additional features include an internal undervoltage

lockout with hysteresis and a digital soft-start/soft-stop

for glitch-free power-up and power-down. Protection

features include lossless cycle-by-cycle current limit,

hiccup-mode output short-circuit protection, and ther-

mal shutdown.

The MAX15021 is available in a space-saving, 5mm x

5mm, 28-pin TQFN-EP package and is specified for

operation from -40°C to +125°C temperature range.

19-4106; Rev 0; 5/08

+ Denotes a lead-free package.

* EP = Exposed pad.

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.

MAX15021ATI+

Regulator with Tracking/Sequencing Capability

RFID Reader Cards

Power-over-Ethernet (PoE) IP Phones

Automotive Multimedia

Multivoltage Supplies

Networking/Telecom

PART

________________________________________________________________ Maxim Integrated Products

-40°C to +125°C

Ordering Information

TEMP RANGE

General Description

Dual, 4A/2A, 4MHz, Step-Down DC-DC

Applications

PIN-PACKAGE

28 TQFN-EP*

AVIN

). The

o 2.5V to 5.5V Input-Voltage Range

o Dual-Output Synchronous Buck Regulators

o Integrated Switches for 4A and 2A Output

o 180° Out-Of-Phase Operation

o Output Voltage Adjustable from 0.6V to V

o Lossless, Cycle-by-Cycle Current Sensing

o External Compensation for Maximum Flexibility

o Digital Soft-Start and Soft-Stop for Tracking

o Digital Soft-Start into a Prebiased Load for

o Sequencing or Coincident/Ratiometric Tracking

o Programmable Switching Frequency from 500kHz

o Thermal Shutdown and Hiccup-Mode Short-

o 20µA Shutdown Current

o 100% Maximum Duty Cycle

o Space-Saving (5mm x 5mm) 28-Pin TQFN

Currents

Applications

Sequencing Applications

to 4MHz

Circuit Protection

Package

TOP VIEW

*EP = EXPOSED PAD.

COMP2

SGND

AVIN

N.C.

EN2

FB2

(5mm x 5mm)

THIN QFN

MAX15021

Pin Configuration

*EP

Features

AVIN

N.C.

COMP1

FB1

EN1

DVDD1

PGND1

Related parts for MAX15021

Related keywords

MAX15021 datasheet
MAX15021 data sheet
MAX15021 pdf datasheet
MAX15021 component
MAX15021 part
MAX15021 distributor
MAX15021 RoHS
MAX15021 datasheet download