Buck-Boost Regulator. MAX17272 Datasheet

MAX17272 Regulator. Datasheet pdf. Equivalent


Maxim Integrated MAX17272
EVALUATION KIT AVAILABLE
Click here for production status of specific part numbers.
MAX17270/MAX17271/
MAX17272/MAX17273
nanoPower Triple/Dual-Output, Single-Inductor,
Multiple-Output (SIMO) Buck-Boost Regulator
General Description
The MAX17270/MAX17271 are 3-output switching
regulators designed for applications requiring efficient
regulation of multiple supplies in a very small space, such
as wearable electronic devices.
The parts use a buck-boost architecture that regulates
three outputs using a single, small 2.2µH inductor at
efficiencies up to 85%. This results in smaller board space
while delivering better total system efficiency than equivalent
power solutions using one buck and linear regulators.
The supply current is 0.85µA when only one output is
enabled, plus 0.2µA for each additional output enabled.
This SIMO (Single-Input Multiple Output) regulator utilizes
the entire battery voltage range due to its ability to create
output voltages that are above, below, or equal to the
input voltage. Peak inductor current for each output is
programmable to optimize the balance between efficiency,
output ripple, EMI, PCB design, and load capability.
Two versions are available. The MAX17270 has 3 enable
inputs and 3 output voltage programming inputs. The
MAX17271 includes an I2C interface with interrupt, a
push-button turn on/off, and a power-good indication.
The MAX17272/MAX17273 are 2-output versions of
MAX17270/MAX17271, respectively.
All versions are offered in either a 4 x 4, 0.4mm wafer-
level package (WLP) or a 16-pin TQFN package.
Applications
● Bluetooth Headsets
● Fitness Bands
● Watches
Benefits and Features
● 3-Output/2-Output, Single-Inductor, Multiple-Output
(SIMO) Buck-Boost Regulator
● 2.7V to 5.5V Input Voltage Range
● Low-Power and Long Battery Life
1.3μA Operating Current (3 SIMO Channels)
• 330nA Shutdown Current
85% Efficiency at 3.3V Output
● Flexible and Configurable
• I2C Compatible Interface (MAX17271/MAX17273)
• Programmable Output Voltage: 0.8V to 5.175V
• Programmable Peak Current Limit
● Robust
• Soft-Start
• Overload Protection
• Thermal Protection
● Small Size
• 1.77mm x 1.77mm x 0.50mm 0.4mm-Pitch WLP
Package
• 3mm x 3mm x 0.75mm TQFN Package
• Small Total Solution Size
Ordering Information appears at end of data sheet.
19-100234; Rev 3; 8/18


MAX17272 Datasheet
Recommendation MAX17272 Datasheet
Part MAX17272
Description Multiple-Output (SIMO) Buck-Boost Regulator
Feature MAX17272; EVALUATION KIT AVAILABLE Click here for production status of specific part numbers. MAX17270/MAX17.
Manufacture Maxim Integrated
Datasheet
Download MAX17272 Datasheet




Maxim Integrated MAX17272
MAX17270/MAX17271/
MAX17272/MAX17273
nanoPower Triple/Dual-Output, Single-Inductor,
Multiple-Output (SIMO) Buck-Boost Regulator
Simplified Application Circuit
IN
(2.7V to 5.5V)
CIN
10uF
Enable Inputs or
I2C Interface
IN
(2.7V to 5.5V)
CIN
10uF
Enable Inputs or
I2C Interface
L
2.2uH
CBST
100nF
MAX17270/1
L
2.2uH
CBST
100nF
MAX17272/3
OUT3
(3.3V/50mA)
OUT2
(1.8V/75mA)
OUT1
(1.2V/80mA)
C1 C2 C3
22uF 10uF 10uF
OUT2
(3.3V/50mA)
OUT1
(1.2V/80mA)
C1 C2
22uF 10uF
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Maxim Integrated MAX17272
MAX17270/MAX17271/
MAX17272/MAX17273
nanoPower Triple/Dual-Output, Single-Inductor,
Multiple-Output (SIMO) Buck-Boost Regulator
Absolute Maximum Ratings
VPWR, OUT1, OUT2, OUT3, VIO to GND................-0.3V to +6V
Continuous Power Dissipation (WLP)
(TA = 70°C, derate 17.2mW/°C above 70°C.)............1376mW
Continuous Power Dissipation (TQFN)
(TA = 70°C, derate 20.8mW/°C above 70°C.).........1666.7mW
Operating Temperature Range............................ -40°C to +85°C
Junction Temperature.......................................................+150°C
Storage Temperature Range............................. -60°C to +150°C
Soldering Temperature (reflow)........................................+260°C
EN1, EN2, EN3, IRQB, ON, RSTB, RSEL1, RSEL2,
RSEL3 to GND.......................................-0.3V to VSUP + 0.3V
SCL, SDA to GND.......................................-0.3V to VVIO + 0.3V
VSUP to VPWR.......................................................-0.3V to +0.3V
PGND to GND.......................................................-0.3V to +0.3V
OUT1, OUT2, OUT3 Short-Circuit Duration...............Continuous
LXA Continuous Current (Note 1)..................................1.2ARMS
LXB Continuous Current (Note 2)..................................1.2ARMS
BST to LXB.................................................................-0.3V to 6V
BST to VPWR..............................................................-0.3V to 6V
Lead Temperature (soldering, 10 seconds)........................ 300°C
Note 1: LXA has internal clamping diodes to PGND and VPWR. It is normal for these diodes to briefly conduct during switching
events. Avoid steady-state conduction of these diodes.
Note 2: Do not externally bias LXB. LXB has an internal low-side clamping diode to PGND, and an internal high-side clamping
diode that dynamically shifts to the selected SIMO output. It is normal for these internal clamping diodes to briefly conduct
during switching events. When the SIMO regulator is disabled, the LXB to PGND absolute maximum voltage is -0.3V to
OUT1 + 0.3V.
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
TQFN
PACKAGE CODE
Outline Number
21-0136
Land Pattern Number
90-0032
THERMAL RESISTANCE, FOUR-LAYER BOARD:
Junction to Ambient (θJA)
Junction to Case (θJC)
48°C/W
10°C/W
T1633+5
WLP
PACKAGE CODE
N161A1+1
Outline Number
21-100190
Land Pattern Number
Refer to Application Note 1891
THERMAL RESISTANCE, FOUR-LAYER BOARD:
Junction to Ambient (θJA)
Junction to Case (θJC)
57.93
N/A
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.
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.
www.maximintegrated.com
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