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MAXM17904/MAXM17905/
MAXM17906
4.5V to 24V, 300mA Himalaya uSLIC
Step-Down Power Module
General Description
The Himalaya series of voltage regulator ICs and power
modules enable cooler, smaller, and simpler power-supply
solutions. The MAXM17904/MAXM17905/MAXM17906
are a family of high-efficiency, synchronous step-down
DC-DC modules with integrated controller, MOSFETs,
compensation components, and inductor that operate
over a wide input-voltage range. The modules oper-
ate from 4.5V to 24V input and deliver up to 300mA
output current. The MAXM17904 and MAXM17905 are
fixed 3.3V and 5V output modules respectively. The
MAXM17906 is an adjustable output (0.9V to 6.3V)
module. The modules significantly reduce design
complexity, manufacturing risks, and offer a true plug and
play power/supply solution, reducing time-to-market.
The MAXM17904/MAXM17905/MAXM17906 modules
employ peak-current-mode control architecture. To reduce
input inrush current, the modules offer a fixed 3.75ms
soft-start time.
The MAXM17904/MAXM17905/MAXM17906 modules
are available in a low profile, compact 10-pin, 2.6mm x
3mm x 1.5mm, uSLIC™ package.
Benefits and Features
● Easy to Use
• Wide 4.5V to 24V Input
• Adjustable 0.9V to 6.3V Output
• Fixed 3.3V and 5V Output
(MAXM17904 and MAXM17905)
• ±1.5% Feedback Accuracy
• Up to 300mA Output-Current
• Internally Compensated
• All Ceramic Capacitors
● High Efficiency
• Selectable PWM- or PFM-Mode of Operation
•
Shutdown Current as Low as 2.2μA (typ)
● Flexible Design
• Internal Soft-Start and Prebias Startup
• Open-Drain Power Good Output (RESET Pin)
• Programmable EN/UVLO Threshold
● Robust Operation
• Hiccup Overcurrent Protection
• Overtemperature Protection
• -40°C to +125°C Ambient Operating Temperature/
-40°C to +150°C Junction Temperature
● Rugged
• Complies with CISPR22(EN55022) Class B
Conducted and Radiated Emissions
• Passes Drop, Shock, and Vibration Standards:
JESD22-B103, B104, B111
Ordering Information
appears at end of data sheet.
uSLIC is a trademark of Maxim Integrated Products, Inc.
Applications
●
●
●
●
●
●
●
Industrial Sensors and Encoders
4-20mA Current-Loop Powered Sensors
LDO Replacement
HVAC and Building Control
Battery-Powered Equipment
General Purpose Point-of-Load
USB Type-C Powered Loads
Typical Application Circuit 2.5V
V
IN
12V
C
IN
1µF
V
OUT
2.5V, 300mA
OUT
GND
C
OUT
10µF
Typical Application Circuit 5V
V
IN
12V
C
IN
1µF
V
IN
EN/UVLO
V
OUT
5V, 300mA
OUT
GND
C
OUT
10µF
V
IN
R1
2.2MΩ
RESET
MAXM17906
EN/UVLO
FB
LX
MODE
R3
133kΩ
MAXM17905
RESET
FB
LX
MODE
R2
825kΩ
C1
1µF
V
CC
R4
75kΩ
C1
1µF
V
CC
19-100509; Rev 0; 3/19
MAXM17904/MAXM17905/
MAXM17906
Absolute Maximum Ratings
4.5V to 24V, 300mA Himalaya uSLIC
Step-Down Power Module
V
IN
, EN/UVLO to GND ............................................-0.3V to 29V
LX, OUT and GND .....................................-0.3V to (V
IN
+ 0.3V)
V
CC
, FB,
RESET
to GND..........................................-0.3V to 6V
MODE to GND.......................................... -0.3V to (V
CC
+ 0.3V)
Output Short-Circuit Duration ....................................Continuous
Junction Temperature (Note 1) ........................................+150°C
Storage Temperature Range ............................ -55°C to +125°C
Lead temperature (soldering,10s) ...................................+260°C
Soldering Temperature (reflow) .......................................+260°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 Information
PACKAGE TYPE: 10-PIN uSLIC
Package Code
Outline Number
Land Pattern Number
Junction to Ambient (θ
JA
)
M102A3+2
21-100094
90-100027
41.56 ºC/W
THERMAL RESISTANCE, FOUR-LAYER BOARD (Note 2)
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.
Note 1:
Junction temperature greater than +125°C degrades operating lifetimes.
Note 2:
Package thermal resistance is measured on an evaluation board with natural convection.
Electrical Characteristics
(V
IN
= V
EN/UVLO
= 12V, V
GND
= 0V, C
VCC
= 1μF, FB = 1V (MAXM17906), FB = 3.6V (MAXM17904) FB = 5.5V (MAXM17905),
LX = MODE =
RESET
= OUT = unconnected; T
A
= -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 3)
PARAMETER
INPUT SUPPLY (V
IN
)
Input-Voltage Range
Input-Shutdown Current
Input-Supply Current
ENABLE/UVLO (EN/UVLO)
V
ENR
EN/UVLO Threshold
EN/UVLO Input-Leakage
Current
LDO (V
CC
)
V
CC
Output-Voltage Range
V
CC
Current Limit
V
CC
I
VCC-MAX
6V < V
IN
< 24V, 0mA < I
VCC
< 10mA
V
CC
= 4.3V
4.75
13
5
30
5.25
50
V
mA
V
ENF
V
EN-TRUESD
I
EN/UVLO
V
EN/UVLO
rising
V
EN/UVLO
falling
V
EN/UVLO
falling, true shutdown
T
A
= +25°C
-100
1.19
1.06
1.215
1.09
0.75
+100
nA
1.28
1.16
V
V
IN
I
IN-SH
I
Q-PFM
I
Q-PWM
V
EN/UVLO
= 0V, shutdown mode
MODE = unconnected,
FB = 1.03 × V
FB-REG
Normal switching mode, V
IN
= 12V,
MODE=0
4.5
2.2
95
3.2
24
4
160
V
μA
μA
mA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
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Maxim Integrated
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2
MAXM17904/MAXM17905/
MAXM17906
Electrical Characteristics (continued)
4.5V to 24V, 300mA Himalaya uSLIC
Step-Down Power Module
(V
IN
= V
EN/UVLO
= 12V, V
GND
= 0V, C
VCC
= 1μF, FB = 1V (MAXM17906), FB = 3.6V (MAXM17904) FB = 5.5V (MAXM17905),
LX = MODE =
RESET
= OUT = unconnected; T
A
= -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 3)
PARAMETER
V
CC
Dropout
V
CC
UVLO
SOFT-START (SS)
Soft-Start Time
FEEDBACK (FB)
MODE = GND, MAXM17906
MODE = unconnected, MAXM17906
FB-Regulation Voltage
V
FB-REG
MODE = GND, MAXM17904
MODE = unconnected, MAXM17904
MODE = GND, MAXM17905
MODE = unconnected, MAXM17905
FB-Leakage Current
TIMING
Switching Frequency
FB Undervoltage Trip Level to
Cause Hiccup
Hiccup Timeout
Minimum On-Time
Maximum Duty Cycle
RESET
FB Threshold for
RESET
Rising
FB Threshold for
RESET
Falling
RESET
Delay After FB
Reaches Rising Threshold
RESET
Output-Level Low
RESET
Output-Leakage
Current
MODE
MODE Internal Pullup
Resistor
THERMAL SHUTDOWN
Thermal-Shutdown
Threshold
Thermal-Shutdown Hysteresis
Temperature rising
166
10
°C
°C
500
kΩ
I
RESET
= 5mA
V
RESET
= 5.5V, T
A
= +25°C
t
ON-MIN
D
MAX
FB = 0.98 x FB
REG
89
f
SW
515
62.5
550
64.5
120
90
91.4
120
94
585
66.5
kHz
%
ms
ns
%
I
FB
MAXM17906
0.887
0.887
3.25
3.25
4.93
4.93
-100
0.90
0.915
3.30
3.35
5.00
5.08
-25
0.913
0.936
3.35
3.42
5.07
5.18
nA
V
t
SS
3.5
3.75
4
ms
SYMBOL
V
CC-DO
V
CC-UVR
V
CC-UVF
V
CC
rising
V
CC
falling
CONDITIONS
V
IN
= 4.5V, I
VCC
= 5mA
4.05
3.7
MIN
TYP
0.15
4.18
3.8
MAX
0.3
4.3
3.95
UNITS
V
V
FB rising
FB falling
93.5
90
95.5
92
1.9
97.5
94
%
%
ms
0.2
0.1
V
μA
Note 3:
Electrical specifications are production tested at T
A
= +25°C. Specifications over the entire operating temperature range are
guaranteed by design and characterization.
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MAXM17904/MAXM17905/
MAXM17906
Typical Operating Characteristics
4.5V to 24V, 300mA Himalaya uSLIC
Step-Down Power Module
(V
IN
= V
EN/UVLO
= 12V, V
GND
= 0V, T
A
= -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. The circuit values for different output-voltage applications are as in
Table 1,
unless other-
wise noted.)
100
90
80
EFFICIENCY (%)
MAXM17906
EFFICIENCY vs. LOAD CURRENT
ADJUSTABLE V
OUT
= 0.9V, PWM MODE
toc01
100
90
80
EFFICIENCY (%)
MAXM17906
EFFICIENCY vs. LOAD CURRENT
ADJUSTABLE V
OUT
= 1.5V, PWM MODE
toc02
100
90
80
EFFICIENCY (%)
MAXM17906
EFFICIENCY vs. LOAD CURRENT
ADJUSTABLE V
OUT
= 2.5V, PWM MODE
toc03
70
60
50
40
30
20
10
0
0
30
60
90 120 150 180 210 240 270 300
LOAD CURRENT (mA)
V
IN
= 5V
V
IN
= 12V
70
60
50
40
30
20
10
0
0
30
60
90 120 150 180 210 240 270 300
LOAD CURRENT (mA)
V
IN
= 12V
V
IN
= 20V
V
IN
= 5V
70
60
50
40
30
20
10
0
0
30
60
V
IN
= 5V
V
IN
= 12V
V
IN
= 20V
90 120 150 180 210 240 270 300
LOAD CURRENT (mA)
100
90
80
EFFICIENCY (%)
MAXM17906
EFFICIENCY vs
.
LOAD CURRENT
ADJUSTABLE V
OUT
= 3.3V, PWM MODE
toc04
100
90
80
MAXM17906
EFFICIENCY vs. LOAD CURRENT
ADJUSTABLE V
OUT
= 5V, PWM MODE
toc05
100
90
80
MAXM17906
EFFICIENCY vs. LOAD CURRENT
ADJUSTABLE V
OUT
= 6.3V, PWM MODE
toc06
60
50
40
30
20
10
0
0
30
60
60
50
40
30
20
10
0
V
IN
= 12V
V
IN
= 20V
EFFICIENCY (%)
V
IN
= 5.5V
V
IN
= 12V
V
IN
= 20V
EFFICIENCY (%)
70
70
70
60
50
40
30
20
10
0
V
IN
= 12V
V
IN
= 20V
90 120 150 180 210 240 270 300
LOAD CURRENT (mA)
0
30
60
90 120 150 180 210 240 270 300
LOAD CURRENT (mA)
0
30
60
90 120 150 180 210 240 270 300
LOAD CURRENT (mA)
100
90
80
EFFICIENCY (%)
MAXM17904
EFFICIENCY vs. LOAD CURRENT
FIXED V
OUT
= 3.3V, PWM MODE
toc07
100
90
80
EFFICIENCY (%)
MAXM17905
EFFICIENCY vs. LOAD CURRENT
FIXED V
OUT
= 5V, PWM MODE
toc08
MAXM17906
EFFICIENCY vs
.
LOAD CURRENT
ADJUSTABLE V
OUT
= 0.9V, PFM MODE
100
90
80
V
IN
= 5V
toc09
60
50
40
30
20
10
0
0
30
60
V
IN
= 5.5V
V
IN
= 12V
V
IN
= 20V
60
50
40
30
20
10
V
IN
= 12V
V
IN
= 20V
EFFICIENCY (%)
70
70
70
60
50
40
30
20
10
0
V
IN
= 12V
90 120 150 180 210 240 270 300
LOAD CURRENT (mA)
0
0
30
60
90 120 150 180 210 240 270 300
LOAD CURRENT (mA)
1
10
LOAD CURRENT (mA)
100
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MAXM17904/MAXM17905/
MAXM17906
Typical Operating Characteristics (continued)
4.5V to 24V, 300mA Himalaya uSLIC
Step-Down Power Module
(V
IN
= V
EN/UVLO
= 12V, V
GND
= 0V, T
A
= -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. The circuit values for different output-voltage applications are as in
Table 1,
unless other-
wise noted.)
100
90
80
EFFICIENCY (%)
MAXM17906
EFFICIENCY vs
.
LOAD CURRENT
ADJUSTABLE V
OUT
= 1.5V, PFM MODE
toc10
MAXM17906
EFFICIENCY vs. LOAD CURRENT
ADJUSTABLE V
OUT
= 2.5V, PFM MODE
100
90
80
EFFICIENCY (%)
toc11
MAXM17906
EFFICIENCY vs
.
LOAD CURRENT
ADJUSTABLE V
OUT
= 3.3V, PFM MODE
100
90
80
EFFICIENCY (%)
toc12
V
IN
= 5V
V
IN
= 5.5V
70
60
50
40
30
20
10
0
1
10
LOAD CURRENT (mA)
100
V
IN
= 5V
V
IN
=12V
V
IN
= 20V
70
60
50
40
30
20
10
0
1
10
LOAD CURRENT (mA)
100
V
IN
= 12V
V
IN
= 20V
70
60
50
40
30
20
10
0
1
10
LOAD CURRENT (mA)
100
V
IN
= 12V
V
IN
= 20V
MAXM17906
EFFICIENCY vs. LOAD CURRENT
ADJUSTABLE V
OUT
= 5V, PFM MODE
100
90
80
EFFICIENCY (%)
toc13
MAXM17906
EFFICIENCY vs. LOAD CURRENT
ADJUSTABLE V
OUT
= 6.3V, PFM MODE
100
90
80
toc14
100
90
80
EFFICIENCY (%)
MAXM17904
EFFICIENCY vs. LOAD CURRENT
FIXED V
OUT
= 3.3V, PFM MODE
V
IN
= 5.5V
toc15
EFFICIENCY (%)
70
60
50
40
30
20
10
0
1
10
LOAD CURRENT (mA)
100
V
IN
= 12V
V
IN
= 20V
70
60
50
40
30
20
10
0
1
10
LOAD CURRENT (mA)
100
V
IN
= 12V
V
IN
= 20V
70
60
50
40
30
20
10
0
1
10
LOAD CURRENT (mA)
100
V
IN
= 12V
V
IN
= 20V
100
90
80
EFFICIENCY (%)
MAXM17905
EFFICIENCY vs. LOAD CURRENT
FIXED V
OUT
= 5V, PFM MODE
toc16
MAXM17906
OUTPUT VOLTAGE vs. LOAD CURRENT
ADJUSTABLE V
OUT
= 0.9V, PWM MODE
0.904
0.903
V
IN
= 5V
toc17
1.500
1.498
OUTPUT VOLTAGE (V)
MAXM17906
OUTPUT VOLTAGE
vs.
LOAD CURRENT
ADJUSTABLE V
OUT
= 1.5V, PWM MODE
toc18
OUTPUT VOLTAGE (V)
70
60
50
40
30
20
10
0
1
10
LOAD CURRENT (mA)
100
V
IN
= 12V
V
IN
= 20V
0.902
0.901
0.900
0.899
0.898
0.897
0.896
0
30
60
V
IN
= 12V
1.496
1.494
1.492
1.490
1.488
1.486
1.484
0
30
60
V
IN
= 5V
V
IN
= 12V
V
IN
= 20V
90 120 150 180 210 240 270 300
LOAD CURRENT (mA)
90 120 150 180 210 240 270 300
LOAD CURRENT (mA)
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