modules enable cooler, smaller, and simpler power supply
solutions. The MAXM17502 is a high-voltage, step-down
power module in a family of pin-to-pin compatible modules
with built-in thermally efficient system-in-packages (SiPs).
The device includes a switch mode power supply controller,
MOSFETs, an inductor, as well as the compensation
components. The device operates from a 4.5V to 60V input
supply voltage and supports adjustable output voltage
from 0.9V to 5.0V with an output current of 1A. The high
level of integration significantly reduces design complexity,
manufacturing risks, and offers a true plug-and-play power
supply solution to reduce time to market.
The pin-to-pin compatibility within this family of modules
allows design flexibility as the design requirements
change. For sequencing purpose, the device features
adjustable soft-start time, programmable EN/UVLO
threshold, and a power-good indicator (RESET pin).
The MAXM17502 is available in a thermally enhanced,
compact, 28-pin, 6.5mm x 10mm x 2.8mm SiP package. It
operates over the -40°C to +125°C industrial temperature
range.
Benefits and Features
●
Reduces Design Complexity, Manufacturing Risks,
and Time to Market
• Integrated Switching Power Supply Controller and
Dual-MOSFET Power Switches
• Integrated Inductor
• Integrated Compensation Components
• Integrated Thermal-Fault Protection
• Integrated Peak Current Limit
●
Saves Board Space in Space-Constrained Applications
• Complete Integrated Step-Down Power Supply in a
Single Package
•
Small Profile 6.5mm x 10mm x 2.8mm SiP Package
•
Simplified PCB Design with Minimal External BOM
Components
●
Offers Flexibility for Power-Design Optimization
• Wide Input Voltage Range from 4.5V to 60V
• Output Voltage Adjustable Range from 0.9V to 5.0V
• Delivers up to 1A Current
•
Shutdown Current as Low as 0.9μA (typ)
• ±1.8% System Accuracy
• Fixed-Frequency PWM
• Programmable Soft-Start and Prebias Startup
• Optional Programmable EN/UVLO
• Robust Operation
• Open-Drain Power Good Output (RESET pin)
• -40°C to +125°C Industrial/Automotive
Temperature Range
Applications
●
●
●
●
●
Industrial Sensors and Process Control
High-Voltage LDO Replacement
Battery-Powered Equipment
HVAC and Building Control
General-Purpose Point-of-Load
Ordering Information
appears at end of data sheet.
19-8758; Rev 0; 5/17
MAXM17502
1A, 60V High-Efficiency, DC-DC Step-Down
Power Module with Integrated Inductor
Absolute Maximum Ratings
V
IN
to PGND .........................................................-0.3V to +70V
EN to GND ................................................-0.3V to (V
IN
to 0.3V)
FB,
RESET,
COMP, SS to GND .............................-0.3V to +6V
V
CC
to GND ..............................................................-0.3V to 6V
OUT to PGND (V
IN
< 10V).........................-0.3V to (V
IN
+ 0.3V)
OUT to PGND (V
IN
> 10V)....................................-0.3V to +10V
LX to PGND................................................-0.3V to (V
IN
+ 0.3V)
GND to PGND ......................................................-0.3V to +0.3V
Operating Temperature Range ......................... -40°C to +125°C
Junction Temperature ......................................................+125°C
Storage Temperature Range ............................ -65°C to +125°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; 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 Information
PACKAGE TYPE: 28 SiP
Package Code
Outline Number
Land Pattern Number
THERMAL RESISTANCE
(Note 1)
Junction to Ambient (θ
JA
)
30°C/W
L286510+2
21-1073
90-100009
Note 1:
Package Thermal Resistance data taken using MAXM17502EVKIT# evaluation kit.
For the latest package outline information and land patterns (footprints), go to
www.maximintegrated.com/packages.
Note that a “+”,
“#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
www.maximintegrated.com
Maxim Integrated
│
2
MAXM17502
1A, 60V High-Efficiency, DC-DC Step-Down
Power Module with Integrated Inductor
Electrical Characteristics
(V
IN
= +24V, V
GND
= V
PGND
= 0V, C
IN
= 2.2µF, V
EN
= 1.5V, C
OUT
= 22µF, V
FB
= V
OUT
, SS = COMP =
RESET
= unconnected.
T
A
= T
J
= -40°C to +125°C, unless otherwise noted. Typical values are at T
A
= +25°C. All voltages are referenced to GND, unless
otherwise noted.) (Note 2)
PARAMETER
INPUT SUPPLY (V
I
N)
IN Voltage Range
IN Supply Current
ENABLE (EN)
V
ENR
EN Threshold
V
ENF
V
EN-
TRUESD
SYMBOL
V
IN
I
IN-SH
I
IN-SW
CONDITIONS
MIN
4.5
TYP
MAX
60
UNITS
V
µA
mA
V
EN
= 0V, shutdown mode
Normal switching mode, no load,
V
FB
= 0V
V
EN
rising
V
EN
falling
V
EN
falling, true shutdown
V
EN
= V
IN
= 60V; T
A
= +25°C
6V < V
IN
< 12V, 0mA < I
VCC
< 10mA
12V < V
IN
< 60V, 0mA < I
VCC
< 2mA
V
CC
= 4.3V, V
IN
= 12V
V
IN
= 4.5V, I
VCC
= 5mA
V
CC
rising
V
CC
falling
V
SS
= 0.5V
1.18
1.105
0.9
5
3.5
1.218
1.135
0.7
8
1.25
1.165
V
EN Input Leakage Current
INTERNAL LDO (V
CC
)
V
CC
Output Voltage Range
V
CC
Current Limit
V
CC
Dropout
V
CC
UVLO
SOFT-START (SS)
Charging Current
Soft-Start Time
FEEDBACK (FB)
FB Regulation Voltage
FB Input Bias Current
OUTPUT VOLTAGE (V
OUT
)
Line Regulation Accuracy
Load Regulation Accuracy
V
OUT
Undervoltage Trip Level to
Cause HICCUP
HICCUP Timeout
I
EN
200
nA
V
CC
I
VCC-MAX
V
CC-DO
V
CC-UVR
V
CC-UVF
I
SS
t
SS
V
FB_REG
I
FB
4.65
15
4.1
3.85
3.55
4.7
5
40
4
3.7
5
1.8
5.35
80
4.15
3.85
5.3
V
mA
V
V
µA
ms
0.884
T
A
= +25°C
V
IN
= 4.5V to 60V, no load and PWM
operation
0 < I
OUT
< 1A; V
OUT
= 3.3V
0.9
0.916
100
V
nA
0.2
8
68.5
71.14
32768
73.5
mV/V
mV/A
%
Cycles
V
OUT-HICF
V
SS
> 0.95V (soft-start is done)
www.maximintegrated.com
Maxim Integrated
│
3
MAXM17502
1A, 60V High-Efficiency, DC-DC Step-Down
Power Module with Integrated Inductor
Electrical Characteristics (continued)
(V
IN
= +24V, V
GND
= V
PGND
= 0V, C
IN
= 2.2µF, V
EN
= 1.5V, C
OUT
= 22µF, V
FB
= V
OUT
, SS = COMP =
RESET
= unconnected.
T
A
= T
J
= -40°C to +125°C, unless otherwise noted. Typical values are at T
A
= +25°C. All voltages are referenced to GND, unless
otherwise noted.) (Note 2)
PARAMETER
CURRENT LIMIT
Average Current-Limit Threshold
Valley Current-Limit Threshold
OSCILLATOR
Switching Frequency
Minimum On-Time
RESET (RESET)
RESET
Output Level Low
RESET
Output Leakage Current
High
V
OUT
Threshold for
RESET
Assertion
V
OUT
Threshold for
RESET
De-assertion
RESET
Deassertion Delay after
FB Reaches 95% Regulation
THERMAL SHUTDOWN
Thermal-Shutdown Threshold
Thermal-Shutdown Hysteresis
SYMBOL
I
AVG-LIMIT
I
VALLEY-
LIMIT
CONDITIONS
MIN
TYP
1.5
MAX
UNITS
0.56
0.65
0.74
A
f
SW
t
ON_MIN
V
FB
> V
OUT-HICF
V
FB
< V
OUT-HICF
500
250
540
270
75
580
290
120
0.04
0.45
kHz
ns
V
µA
%
%
Cycles
I
RESET
= 1mA
V
FB
= 1V
V
OUT-OKF
V
OUT-OKR
V
FB
falling
V
FB
rising
90.5
93.5
92.5
95.5
1024
94.5
97.5
Temperature rising
165
10
°C
°C
Note 2:
All limits are 100% tested at T
A
= +25°C. Maximum and minimum limits are guaranteed by design and characterization
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
