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MAX15022ATI+T

Description
voltage regulators - switching regulators dual 4A/2A 4mhz w/dual ldo ctlr
CategoryPower/power management    The power supply circuit   
File Size306KB,28 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
Environmental Compliance
Download Datasheet Parametric View All

MAX15022ATI+T Overview

voltage regulators - switching regulators dual 4A/2A 4mhz w/dual ldo ctlr

MAX15022ATI+T Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
package instructionHVQCCN,
Reach Compliance Codecompli
ECCN codeEAR99
Other featuresOPERATES IN ADJUSTABLE MODE FROM 0.6V TO 5.5V
Analog Integrated Circuits - Other TypesDUAL SWITCHING CONTROLLER
control modeVOLTAGE-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage5.5 V
Minimum input voltage2.5 V
Nominal input voltage3.3 V
JESD-30 codeS-XQCC-N28
length5 mm
Number of functions1
Number of terminals28
Maximum operating temperature125 °C
Minimum operating temperature-40 °C
Maximum output current6 A
Package body materialUNSPECIFIED
encapsulated codeHVQCCN
Package shapeSQUARE
Package formCHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Maximum seat height0.8 mm
surface mountYES
Switch configurationPHASE-SHIFT
Maximum switching frequency4000 kHz
technologyBICMOS
Temperature levelAUTOMOTIVE
Terminal formNO LEAD
Terminal pitch0.5 mm
Terminal locationQUAD
width5 mm
Base Number Matches1
19-4107; Rev 1; 7/11
KIT
ATION
EVALU
BLE
AVAILA
Dual, 4A/2A, 4MHz, Step-Down DC-DC
Regulator with Dual LDO Controllers
General Description
The MAX15022 is a dual-output, pulse-width-modulated
(PWM), step-down DC-DC regulator with dual LDO con-
trollers. The device operates from 2.5V to 5.5V and
each output can be adjusted from 0.6V to the input
supply (V
AVIN
). The MAX15022 delivers up to 4A (regu-
lator 1) and 2A (regulator 2) of output current with two
LDO controllers that can be used to drive two external
PNP transistors to provide two additional outputs. This
device offers the ability to adjust the switching frequen-
cy from 500kHz to 4MHz and provides the capability of
optimizing the design in terms of size and performance.
The MAX15022 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 MAX15022 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 MAX15022 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.
Features
o
2.5V to 5.5V Input-Voltage Range
o
Dual-Output Synchronous Buck Regulators
o
Integrated Switches for 4A and 2A Output
Currents
o
180° Out-Of-Phase Operation
o
Output Voltage Adjustable from 0.6V to V
AVIN
o
Two LDO Controllers
o
Lossless, Cycle-by-Cycle Current Sensing
o
External Compensation for Maximum Flexibility
o
Digital Soft-Start and Soft-Stop for Tracking
Applications
o
Digital Soft-Start into a Prebiased Load for
Sequencing Applications
o
Sequencing or Coincident/Ratiometric Tracking
o
Programmable Switching Frequency from 500kHz
to 4MHz
o
Thermal Shutdown and Hiccup-Mode Short-
Circuit Protection
o
30µA Shutdown Current
o
100% Maximum Duty Cycle
o
Space-Saving (5mm x 5mm) 28-Pin TQFN
Package
MAX15022
Pin Configuration
PGND2
PVIN2
EN4
EN3
15
14
13
12
FB3
B3
COMP1
FB1
EN1
DVDD1
PGND1
11
10
9
8
2
PGND1
3
LX1
4
PVIN1
5
PVIN1
6
LX1
7
PGND1
FB4
LX2
TOP VIEW
Applications
RFID Reader Cards
Power-over-Ethernet (PoE) IP Phones
Automotive Multimedia
Multivoltage Supplies
Networking/Telecom
B4 22
COMP2 23
FB2 24
EN2 25
SGND 26
AVIN 27
21
20
19
18
17
16
MAX15022
Ordering Information
PART
MAX15022ATI+
MAX15022ATI/V+
TEMP RANGE
-40°C to +125°C
-40°C to +125°C
PIN-PACKAGE
28 TQFN-EP*
28 TQFN-EP*
RT 28
1
+
*EP
+Denotes
a lead(Pb)-free/RoHS-compliant package.
*EP
= Exposed pad.
/V denotes an automotive qualified part.
SEL
THIN QFN
(5mm x 5mm)
*EP = EXPOSED PAD.
________________________________________________________________
Maxim Integrated Products
DVDD2
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.
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