MAX15048ETJ-T datasheet, PDF - EEWORLD Datasheet

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MAX15048ETJ-T: DescriptionSwitching Controllers 1.2MHz Triple Buck w/Tracking; Categorysemiconductor Power management; File Size3MB，31 Pages; ManufacturerMaxim; Websitehttps://www.maximintegrated.com/en.html

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MAX15048ETJ-T Overview

Switching Controllers 1.2MHz Triple Buck w/Tracking

MAX15048ETJ-T Parametric

Parameter Name	Attribute value
Product Category	Switching Controllers
Manufacturer	Maxim
RoHS	Details
Topology	Buck
Number of Outputs	3 Output
Switching Frequency	200 kHz
Output Voltage	5 V
Output Current	15 A
Minimum Operating Temperature	- 40 C
Maximum Operating Temperature	+ 85 C
Mounting Style	SMD/SMT
Package / Case	TQFN-32
Packaging	Reel
Operating Supply Current	6 mA
Operating Supply Voltage	4.7 V to 23 V
Factory Pack Quantity	2500
Type	Voltage Mode PWM Controllers

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EVALUATION KIT AVAILABLE

MAX15048/MAX15049

Triple-Output Buck Controllers

with Tracking/Sequencing

General Description

The MAX15048/MAX15049 are triple-output pulse-width

modulated (PWM), step-down, DC-DC controllers with

tracking (MAX15048) and sequencing (MAX15049)

options. The devices operate over the 4.7V to 23V input-

voltage range. Each PWM controller provides an adjustable

output down to 0.6V and delivers up to 15A of load current

with excellent load and line regulation. The MAX15049 can

start into prebiased outputs. The MAX15048/MAX15049

are optimized for high-performance, small-size power-

management solutions.

The options of coincident or ratiometric tracking (MAX15048)

or output sequencing (MAX15049) allow the tailoring of

the power-up/power-down sequence depending on the

system requirements. Each of the MAX15048/MAX15049

PWM sections utilizes a voltage-mode control scheme with

external compensation, allowing for good noise immunity

and maximum flexibility with a wide selection of inductor

values and capacitor types. Each PWM section operates at

the same fixed switching frequency that is programmable

from 200kHz to 1.2MHz. Each converter, operating at up to

1.2MHz with 120N out-of-phase, increases the input capaci-

tor ripple frequency up to 3.6MHz, reducing the RMS input

ripple current and thus the size of the input bypass capaci-

tor significantly. The MAX15048/MAX15049 integrate boost

diodes for additional system cost savings.

The MAX15048/MAX15049 include internal undervolt-

age lockout (UVLO) with hysteresis and digital soft-start

(MAX15048/MAX15049)/soft-stop (MAX15048) for glitch-

free power-up and power-down of the converter. The

power-good circuitry (PGOOD) monitors all three outputs

and provides a power-good signal to the system control/

processor when all outputs are within regulation. Protection

features include lossless valley-mode current limit, hiccup

mode output short-circuit protection, and thermal shutdown.

The MAX15048/MAX15049 are available in space-saving,

5mm x 5mm, lead-free, 32-pin TQFN-EP packages and

are specified for operation over the -40NC to +85NC

extended temperature range.

Features

4.7V to 23V or 5V ±10% Input Voltage Range

Triple-Output Synchronous Buck Controllers with

120° Out-of-Phase Operation

Prebias Power-Up (MAX15049)

Output Voltage Adjustable Down to 0.6V

Coincident/Ratiometric Tracking (MAX15048)

Accurate Sequencing Through Enable Threshold

(MAX15049)

External Compensation for Maximum Flexibility

Digital Soft-Start (MAX15048/MAX15049) and Soft-

Stop (MAX15048)

Lossless Valley-Mode Current Sensing Using

DS(ON)

of the Low-Side MOSFET

PGOOD Output

Integrated Bootstrap Diodes

Programmable Switching Frequency from 200kHz

to 1.2MHz

Thermal Shutdown and Hiccup Mode Short-Circuit

Protection

Space-Saving (5mm x 5mm), 32-Pin TQFN

Package

PART

MAX15048ETJ+

MAX15049ETJ+

TEMP RANGE

-40

C to +85

-40

+85

PIN-PACKAGE

32 TQFN-EP*

Ordering Information

+Denotes

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

*EP

= Exposed pad.

Simplified Typical Operating

Circuit (Coincident Tracking)

OUT2

COMP2

PGND2

BST2

DH2

DL2

EN2

EN1

DH1

DH3

OUT3

LX3

BST3

DL3

PGND3

FB3

OUT1

COMP3

LX1

LX2

FB2

OUT1

Applications

Point-of-Load DC-DC Converters

ASIC/CPU/DSP Core and I/O Voltages

DDR Power Supply

Base-Station Power Supplies

Telecom and Networking Power Supplies

RAID Control Power Supplies

Set-Top Boxes

MAX15048

BST1

DL1

PGND1

FB1

PGOOD

SGND

REG

OUT1

OUT2

OUT3

SOFT-START

SOFT-STOP

COINCIDENT TRACKING OUTPUTS

For pricing, delivery, and ordering information, please contact Maxim Direct

at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.

REG

EN3

COMP1

19-5110; Rev 0; 1/10

MAX15048ETJ-T Related Products

	MAX15048ETJ-T	MAX15049ETJ-T
Description	Switching Controllers 1.2MHz Triple Buck w/Tracking	Switching Controllers 1.2MHz Triple Buck w/Tracking
Product Category	Switching Controllers	Switching Controllers
Manufacturer	Maxim	Maxim
RoHS	Details	Details
Topology	Buck	Buck
Number of Outputs	3 Output	3 Output
Switching Frequency	200 kHz	200 kHz
Output Voltage	5 V	5 V
Output Current	15 A	15 A
Minimum Operating Temperature	- 40 C	- 40 C
Maximum Operating Temperature	+ 85 C	+ 85 C
Mounting Style	SMD/SMT	SMD/SMT
Package / Case	TQFN-32	TQFN-32
Packaging	Reel	Reel
Operating Supply Current	6 mA	6 mA
Operating Supply Voltage	4.7 V to 23 V	4.7 V to 23 V
Factory Pack Quantity	2500	2500
Type	Voltage Mode PWM Controllers	Voltage Mode PWM Controllers

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