Data Sheet
Dual 4A Power Module
MxL7204
General Description
The
MxL7204
power module is a complete dual 4A or
single 8A output switch mode DC/DC power supply with
an input voltage of 4.5V to 20V. It offers higher efficiency
and improved thermal performance than the competition
while matching pinout and functionality. Power modules
integrate the switching controller, power FETs, inductors
and all supporting components. The MxL7204 supports
two outputs each with an output voltage range of 0.6V to
5.0V, set by a single external resistor. Its high efficiency
design delivers up to 4A continuous current (5A peak) for
each output. Only a few input and output capacitors are
needed.
The device supports frequency synchronization,
multiphase operation, and output voltage tracking for
supply rail sequencing. High Switching frequency and
a current mode architecture enable a very fast transient
response to line and load changes without sacrificing
stability.
Fault protection features include overvoltage, overcurrent
and over temperature protection. The power module is
offered in a space saving and thermally enhanced 15mm ×
15mm × 2.82mm LGA package.
Features
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Dual 4A output (5A peak)
Input Voltage Range: 4.5V to 20V
Output Voltage Range: 0.6V to 5.0V
Current mode control / fast transient response
Adjustable switching frequency
Frequency synchronization (250kHz to 780kHz)
Overcurrent protection
Output overvoltage protection
Thermally enhanced (15mm x 15mm x 2.82mm) LGA
package
Applications
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Telecom and Networking Equipment
Industrial Equipment
Ordering Information -
Back Page
95
90
85
MODE/PLLIN
INTVCC
FREQ/PLLFLTR
VFB2
COMP2
VOUT2
Efficiency (%)
5.5V TO
20V
V
OUT1
2.5V/4A
10µF
x2
100µF
19.1k
VIN
VFB1
80
75
70
65
60
55
0
0.5
1
1.5
2
5Vout 780kHz
3.3Vout 780kHz
2.5Vout 780kHz
1.8Vout 780kHz
1.5Vout 500kHz
1.2Vout 500kHz
1.0Vout 500kHz
13.3k
22pF
100µF
0.1µF
V
OUT2
3.3V/4A
22pF
COMP1
VOUT1
TK/SS1
0.1µF
MxL7204
PGND
TK/SS2
RUN2
EXTVCC
RUN1
PGOOD
SGND
I
OUT
(A)
2.5
3
3.5
4
Figure 1:
Typical Application Circuit
Figure 2:
Efficiency 12V
IN
•
www.maxlinear.com
•
Rev 1B
REV1A
i/i
MxL7204 Data Sheet
Revision History
Revision History
Revision
1A
1B
Release Date
2/20/18
8/8/18
Change Description
Initial Release
Added paralleled output voltage programming equations and Table 7.
Renamed R
FB
resistors to R
SET
. Corrected TK/SS and VFB pin
numbers in Pin Description. Harmonized name of TR/SS, FREQ/PLL-
FLTR, MODE/PLLIN and PGND pins. Corrected Figure 30.
8/8/18
Rev 1B
ii
MxL7204 Data Sheet
Table of Contents
Table of Contents
General Description .................................................................................................................... i
Features........................................................................................................................................ i
Applications ................................................................................................................................. i
Specifications
............................................................................................................................. 1
Absolute Maximum Ratings ............................................................................................................. 1
ESD Ratings ...................................................................................................................................... 1
Operating Conditions ....................................................................................................................... 2
Electrical Characteristics ................................................................................................................. 3
Pin Information ........................................................................................................................... 7
Pin Configuration
.............................................................................................................................. 7
Pin Description ................................................................................................................................. 7
Typical Performance Characteristics ..................................................................................... 10
Functional Block Diagram ....................................................................................................... 12
Applications Information ......................................................................................................... 13
Power Module Description ............................................................................................................. 13
Typical Application Circuit ............................................................................................................. 13
V
IN
to V
OUT
Step-Down Ratios ....................................................................................................... 13
Output Voltage Programming ........................................................................................................ 14
Input Capacitors.............................................................................................................................. 14
Output Capacitors........................................................................................................................... 14
Pulse-Skipping Mode Operation.................................................................................................... 14
Forced Continuous Operation ....................................................................................................... 14
Multiphase Operation ..................................................................................................................... 14
Input RMS Ripple Current Cancellation ........................................................................................ 15
Minimum On-Time........................................................................................................................... 17
Output Voltage Tracking................................................................................................................. 17
Power Good ..................................................................................................................................... 18
Stability Compensation .................................................................................................................. 18
8/8/18
Rev 1B
iii
MxL7204 Data Sheet
Table of Contents
Table of Contents
Run Enable ...................................................................................................................................... 18
INTV
CC
and EXTV
CC ......................................................................................................................................................
18
Thermal Considerations and Output Current Derating ............................................................... 19
Fault Protection............................................................................................................................... 21
Layout Checklist and Example ...................................................................................................... 22
Mechanical Dimensions ........................................................................................................... 24
Recommended Land Pattern and Stencil............................................................................... 25
Ordering Information................................................................................................................ 26
8/8/18
Rev 1B
iv
MxL7204 Data Sheet
List of Tables
List of Tables
Table 1:
Absolute Maximum Ratings ............................................................................................ 1
Table 2:
ESD Ratings ................................................................................................................... 1
Table 3:
Operating Conditions ..................................................................................................... 2
Table 4:
Electrical Characteristics................................................................................................. 3
Table 5:
Pin Description ................................................................................................................ 7
Table 6:
VFB Resistor Table vs Various Output Voltages ........................................................... 14
Table 7:
VFB Resistor Table vs Various Output Voltages for Paralleled Output Mode ............... 14
Table 8:
Capacitor Selection ....................................................................................................... 18
Table 9:
Ordering Information ..................................................................................................... 26
8/8/18
Rev 1B
v
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