The MAXM17515 is a fixed-frequency, step-down power
module in a thermally-efficient system-in-package (SiP)
package that operates from a 2.4V to 5.5V input
supply voltage and supports output currents up to 5A.
The device includes switch-mode power-supply controller,
dual n-channel MOSFET power switches, a fully shielded
inductor, as well as compensation components. The
device supports 0.75V to 3.6V programmable output
voltage. The high level of integration significantly reduces
design complexity, manufacturing risks, and offers a true
plug-and-play power-supply solution, reducing the time
to market.
The MAXM17515 is available in a thermally enhanced,
compact 28-pin, 10mm x 6.5mm x 2.8mm SiP
package and can operate over the -40
°C
to +125
°C
industrial temperature range.
Benefits and Features
● Reduces Design Complexity, Manufacturing Risks,
and Time-to-Market
•
Complete Integrated Step-Down Power Supply in a
Single Package
•
Passes EN55022 (CISPR22) Class-B Radiated
and Conducted EMI Standard
● Saves Board Space in Space-Constrained Applications
• Small Form Factor 6.5mm x 10mm x 2.8mm SiP
Package
•
Simplified PCB Design with as Few as Four
External Components
● Offers Flexibility for Power-Design Optimization
•
2.4V to 5.5V Input Voltage Range
• 0.75V to 3.6V Programmable Output Voltage
• 5A Output Current
•
Fixed 1MHz Switching Frequency
•
Enable Input
•
Power-Good Output
● Reduces Power Dissipation
•
Up to 94% Efficiency
•
Autoswitch, Light-Load, Pulse-Skipping Mode
•
High Impedance Shutdown
•
< 1μA Shutdown Current
● Operates Reliably and Reduces System Downtime
•
Voltage-Controlled Internal Soft-Start
• Fault Protection
• Output Undervoltage/Overvoltage Protection
• Thermal-Fault Protection
•
Peak Current Limit
• -40°C to +125°C Operation
Ordering Information
appears at end of data sheet.
Applications
●
●
●
●
●
●
FPGA and DSP Point-of-Load Regulator
Base Station Point-of-Load Regulator
Industrial Control Equipment
Servers
ATE Equipment
Medical Equipment
Typical Application Circuit
PGND
PGND
PGND
PGND
PGND
PGND
IN
V
IN
5V
IN
22µF
V
CC
V
CC
IN
IN
PGND
OUT
OUT
OUT
V
OUT
1.1V, 5A
220µF
22µF
(OPTIONAL )
22.1kΩ
OUT
OUT
OUT
OUT
OUT
FB
POK
MAXM17515
EN
GND
GND
GND
47.5kΩ
19-7429; Rev 1; 4/15
MAXM17515
5A, 2.4V to 5.5V Input,
High-Efficiency Power Module
Absolute Maximum Ratings
IN to PGND
.............................................................-0.3V to +6V
V
CC
to GND
............................................................-0.3V to +6V
V
CC
to IN
.................................................................-0.3V to +6V
EN to GND
..............................................................-0.3V to +6V
FB, POK to GND
...................................... -0.3V to (V
CC
+ 0.3V)
OUT, EP3 to GND
......................................-0.6V to (V
IN
+ 0.3V)
PGND to GND
......................................................-0.3V to +0.3V
EP1 to GND..........................................................-0.3V
to +0.3V
EP2 to PGND
......................................... -0.3V to + (V
IN
+ 0.3V)
EP2 to GND............................................
-0.6V to + (V
IN
+ 0.3V)
Continuous Power Dissipation (T
A
= +70°C)
28-Pin SIP (derate 37mW/°C above +70°C)
............2000mW
Operating Temperature Range
......................... -40°C to +125°C
Junction Temperature ......................................................+125°C
Storage Temperature Range
............................ -55°C to +150°C
Lead Temperature (soldering, 10s)
................................. +245°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Package Thermal Characteristics
(Note 1)
SiP
Junction-to-Ambient Thermal Resistance (q
JA
)...........25°C/W
Junction-to-Case Thermal Resistance (q
JC
) .................6°C/W
Note 1:
Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to
www.maximintegrated.com/thermal-tutorial.
Electrical Characteristics
(V
IN
= V
CC
= V
EN
= 5V, T
A
= T
J
= -40°C to +125°C, unless otherwise noted. Typical values are at T
A
= +25°C, unless otherwise noted.
See
Typical Application Circuit.)
(Note 2)
PARAMETER
INPUT SUPPLY (V
IN
)
IN Input Voltage Range
IN Undervoltage Threshold
IN Standby Supply Current
V
CC
SUPPLY
V
CC
Input Voltage Range
V
CC
Undervoltage Threshold
V
CC
Shutdown Supply Current
V
CC
Supply Current
OUTPUT
Output Voltage Programmable
Range
Unity Gain Output-Voltage
Tolerance/FB accuracy
FB Load Regulation Accuracy
(RDROOP)
FB Line Regulation Accuracy
FB Input Bias Current
V
OUT
V
IN
= V
CC
= 5.2V,
I
LOAD
= 2A
(see derating curve for V
OUT
> 2.5V)
FB = OUT, no load
2A < I
OUT
< 5A, FB = OUT
FB = OUT, no load, 2.4V < V
IN
< 5.5V
T
A
= -40°C to +125°C (Note 3)
-0.1
0.754
0.757
-7.5
0.770
-4.4
1.253
-0.015
3.6
0.783
-1
4.5
+0.1
V
V
mV/A
mV/V
μA
I
VCC_SHD
I
VCC
V
CC
Rising edge (160mV hysteresis)
EN = GND, POK unconnected, measured
at V
CC
,
TA
= +25°C
Regulator enabled, no load, no switching
(V
FB
= 1V)
4.5
3.9
4.2
0.1
62
5.5
4.5
1.0
135
V
V
μA
μA
I
Q
V
IN
2.4
V
IN
= V
CC
Rising edge (100mV hysteresis)
V
IN
= V
CC
= 4.5V, no load
4.5
2.05
2.19
1
5.5
5.5
2.4
5.5
V
V
μA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
www.maximintegrated.com
Maxim Integrated │
2
MAXM17515
5A, 2.4V to 5.5V Input,
High-Efficiency Power Module
Electrical Characteristics (continued)
(V
IN
= V
CC
= V
EN
= 5V, T
A
= T
J
= -40°C to +125°C, unless otherwise noted. Typical values are at T
A
= +25°C, unless otherwise noted.
See
Typical Application Circuit.)
(Note 2)
PARAMETER
Average Output Current Limit
EFFICIENCY
Efficiency
SWITCHING FREQUENCY
Switching Frequency
SOFT-START
Soft-Start Ramp Time
Soft-Start Fault Blanking Time
POWER-GOOD OUTPUT (POK)
POK Upper Trip Threshold and
Overvoltage-Fault Threshold
POK Lower Trip Threshold
POK Leakage Current
POK Propagation Delay Time
POK Output Low Voltage
Overvoltage-Fault Latch Delay
Time
Undervoltage-Fault Latch Delay
Time
LOGIC INPUTS
EN Input High Threshold
EN Input Leakage Current
THERMAL SHUTDOWN
Thermal-Shutdown Threshold
TSHDN
Hysteresis = 15°C
+160
°C
Note 2:
Limits are 100% tested at T
A
= +25°C. Maximum and minimum limits are guaranteed by design and characterization over
temperature.
Note 3:
Design guaranteed by ATE characterization. Limits are not production tested.
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