MAX17220.pdf 데이터시트 (총 23 페이지) - 파일 다운로드 MAX17220 데이타시트 다운로드

No Preview Available !

MAX17220‒MAX17225
EVALUATION KIT AVAILABLE
400mV to 5.5V Input, nanoPower Synchronous
Boost Converter with True Shutdown
General Description
The MAX17220–MAX17225 is a family of ultra-low
quiescent current boost (step-up) DC-DC converters with
a 225mA/0.5A/1A peak inductor current limit and True
Shutdown™. True Shutdown disconnects the output from
the input with no forward or reverse current. The output
voltage is selectable using a single standard 1% resistor.
The 225mA (MAX17220), 500mA (MAX17221/MAX17222/
MAX17223), and 1A (MAX17224/MAX17225) peak inductor
current limits allow flexibility when choosing inductors. The
MAX17220/MAX17222/MAX17224 versions have post-
startup enable transient protection (ETP), allowing the
output to remain regulated for input voltages down to
400mV, depending on load current. The MAX17220–
MAX17225 offer ultra-low quiescent current, small total
solution size, and high efficiency throughout the entire load
range. The MAX17220–MAX17225 are ideal for battery
applications where long battery life is a must.
Applications
● Optical Heart-Rate Monitoring (OHRM) LED Drivers
● Supercapacitor Backup for RTC/Alarm Buzzers
● Primary-Cell Portable Systems
● Tiny, Low-Power IoT Sensors
● Secondary-Cell Portable Systems
● Wearable Devices
● Battery-Powered Medical Equipment
● Low-Power Wireless Communication Products
Benefits and Features
● 300nA Quiescent Supply Current Into OUT
● True Shutdown Mode
• 0.5nA Shutdown Current
• Output Disconnects from Input
• No Reverse Current with VOUT 0V to 5V
● 95% Peak Efficiency
● 400mV to 5.5V Input Range
● 0.88V Minimum Startup Voltage
● 1.8V to 5V Output Voltage Range
• 100mV/Step
• Single 1% Resistor Selectable Output
● 225mA, 500mA, and 1A Peak Inductor Current Limit
• MAX17220: 225mA ILIM
• MAX17221/MAX17222/MAX17223: 500mA ILIM
• MAX17224/MAX17225: 1A ILIM
● MAX17220/MAX17222/MAX17224 Enable Transient
Protection (ETP)
2mm x 2mm 6-Pin μDFN
● 0.88mm x 1.4mm 6-Bump WLP (2 x 3, 0.4mm Pitch)
Typical Operating Circuit
Ordering Information appears at end of data sheet.
True Shutdown is a trademark of Maxim Integrated Products, Inc.
19-8753; Rev 1; 4/17

No Preview Available !

MAX17220–MAX17225
400mV to 5.5V Input, nanoPower Synchronous
Boost Converter with True Shutdown
Absolute Maximum Ratings
OUT, EN, IN to GND................................................-0.3V to +6V
RSEL to GND................. -0.3V to Lower of (VOUT + 0.3V) or 6V
LX RMS Current WLP...............................-1.6Arms to +1.6Arms
LX RMS Current µDFN...................................-1Arms to +1Arms
Continuous Power Dissipation (TA = 70°C)
WLP (derate 10.5mW/°C above +70°C).......................840mW
Continuous Power Dissipation (TA = 70°C)
µDFN (derate 4.5mW/°C above +70°C)....................357.8mW
Operating Temperature Range............................ -40°C to +85°C
Junction Temperature.......................................................+150°C
Storage Temperature Range............................. -40°C to +150°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
µDFN
PACKAGE CODE
Outline Number
Land Pattern Number
Thermal Resistance, Four-Layer Board:
Junction to Ambient (θJA)
Junction to Case (θJC)
WLP
21-0164
90-0004
223.6°C/W
122°C/W
L622+1C
PACKAGE CODE
Outline Number
Land Pattern Number
Thermal Resistance, Four-Layer Board:
Junction to Ambient (θJA)
Junction to Case (θJC)
N60E1+1
21-100128
Refer to Application Note 1891
95.15°C/W
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
Maxim Integrated 2

No Preview Available !

MAX17220–MAX17225
400mV to 5.5V Input, nanoPower Synchronous
Boost Converter with True Shutdown
Electrical Characteristics
(VIN = VEN = 1.5V, VOUT = 3V, TA = -40°C to +85°C, typical values are at TA = +25°C, unless otherwise noted. (Note 1))
PARAMETER
Minimum Input Voltage
Input Voltage Range
Minimum Startup Input
Voltage
Output Voltage Range
Output Accuracy, LPM
Output Accuracy,
Ultra-Low-Power Mode
Quiescent Supply Current
Into OUT
Quiescent Supply Current
Into IN
Total Quiescent Supply
Current into IN LX EN
Shutdown Current Into IN
Total Shutdown Current
into IN LX
Inductor Peak Current
Limit
LX Maximum Duty Cycle
LX Maximum On-Time
LX Minimum Off-Time
SYMBOL
CONDITIONS
VIN_MIN
VIN
VIN_STARTUP
VOUT
ACCLPM
Runs from output after startup, IOUT = 1mA
Guaranteed by LX Maximum On-Time
RL ≥ 3kΩ, Typical Operating Circuit,
TA = 25°C ,
See RSEL Selection table.
For VIN < VOUT target. Note 2.
VOUT falling, when LX switching frequency
is > 1MHz. Note 3.
ACCULPM
VOUT falling, when LX switching frequency
is > 1kHz. Note 4.
IQ_OUT
MAX17220/2/4
EN = open after startup.
MAX17221/3/5 EN = VIN.
Not switching, RSEL OPEN,
VOUT = 104% of 1.8V.
MAX17220/2/4
EN = open after startup.
MAX17221/3/5 EN = VIN.
Not switching, RSEL OPEN,
VOUT = 104% of 1.8V.
TA= 25°C.
TA = 85°C
IQ_IN
TA = 25°C
IQ_IN_TOTAL
ISD_IN
ISD_TOTAL
IPEAK
DC
tON
tOFF
MAX17220/2/4 EN = Open after startup.
MAX17221/3/5 EN = VIN. Not switching,
VOUT = 104% of VOUT target. Total current
includes IN, LX, and EN. TA = 25ºC.
MAX17220/2/3/4/5, RL= 3kΩ, VOUT = VEN = 0V.
MAX17221, RL= open,VE N = 0V,
TA = 25°C.
MAX17220/2/3/4/5, RL= 3kΩ. MAX17221,
RL = open, VEN = 0V, VIN = VLX = 3V.
Includes LX and IN leakage. TA = 25°C.
MAX17220
Note 5
MAX17221/2/3
MAX17224/5
Note 6
Note 6
Note 6
VOUT = 1.8V
VOUT = 3V
VOUT = 1.8V
VOUT = 3V
MIN
0.95
1.8
-1.5
1
180
0.4
0.8
70
280
270
90
80
TYP
400
0.88
2.5
MAX
5.5
0.95
UNITS
mV
V
V
5V
+1.5
%
4%
300 600
nA
470 900
0.1 nA
0.5 100 nA
0.1 nA
0.5 100 nA
225 270 mA
0.5 0.575
1 1.2
A
75 %
365 450
ns
300 330
120 150
ns
100 120
www.maximintegrated.com
Maxim Integrated 3

No Preview Available !

MAX17220–MAX17225
400mV to 5.5V Input, nanoPower Synchronous
Boost Converter with True Shutdown
Electrical Characteristics (continued)
(VIN = VEN = 1.5V, VOUT = 3V, TA = -40°C to +85°C, typical values are at TA = +25°C, unless otherwise noted. (Note 1))
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
LX Leakage Current
ILX_LEAK VOUT = VEN = 0V
VLX = 1.5V,
TA = 25°C
VLX = 5.5V,
TA= 85°C.
MAX17220
0.3
nA
30
124 270
N-Channel On-Resistance
RDS(ON) VOUT = 3.3V
MAX17221/2/3
MAX17224/5
62 135
31 70
MAX17220
300 600
P-Channel On-Resistance
RDS(ON) VOUT = 3.3V
MAX17221/2/3
MAX17224/5
150 300
75 150
Synchronous Rectifier
Zero-Crossing As Percent
of Peak Current Limit
IZX VOUT = 3.3V, Note 7
2.5 5 7.5 %
Enable Voltage Threshold
Enable Input Leakage
Enable Input Impedance
VIL
VIH
IEN_LK
When LX switching stops, EN falling
EN rising
MAX17221/3/5, VEN = 5.5V, TA = 25°C
MAX17220/2/4, VEN = 0V, TA= 25°C,
MAX17220/2/4
300 500
mV
600 850
0.1
nA
0.1
100 200
Required Select Resistor
Accuracy
RSEL
Use the nearest ±1% resistor from RSEL
Selection Table
-1
1%
Select Resistor Detection
Time
tRSEL
VOUT = 1.8V, CRSEL < 2pF, Note 8
360 600 1320 μs
Note 1: Limits are 100% production tested at TA = +25°C. Limits over the operating temperature range are guaranteed through
correlation using statistical quality control (SQC) methods.
Note 2: Guaranteed by the Required Select Resistor Accuracy parameter.
Note
3:
OCuotnpturotlASccchueramcey,aLnodwVPOoUwTeEr RmRoOdeRisvsthIeLOreAgDuTlaOtiConfoarccmuorarecydewtianidlso.wTheixspaeccctuerdawcyhednoeIOs UnTot>inIcOluUdTe_TloRaAdN,SliInTeIO, No.r
See PFM
ripple.
Note
4:
Output Accuracy, Ultra-Low Power mode is the regulation
PFM Control Scheme and VOUT ERROR vs. ILOAD TOC
accuracy window expected when IOUT < IOUT_TRANSITION. See
for more details. This accuracy does not include load, line, or ripple.
Note 5: The maximum current limit parameter accounts for 5% of overcurrent due to propagation delays. This is a static measurement.
See ILIM vs. VIN TOC.
Note 6: Guaranteed by measuring LX frequency and duty cycle
Note 7: This is a static measurement.
Note 8: This is the time required to determine RSEL value. This time adds to the startup time. See Output Voltage Selection.
www.maximintegrated.com
Maxim Integrated 4

No Preview Available !

MAX17220–MAX17225
400mV to 5.5V Input, nanoPower Synchronous
Boost Converter with True Shutdown
Typical Operating Characteristics
(MAX17222ELT+, IN = 1.5V, OUT = 3V, L = 2.2μH Coilcraft XFL4020-222, CIN = 10μF, COUT = 10μF, TA = +25°C, unless otherwise noted.)
TOTAL SYSTEM SHUTDOWN CURRENT
vs. TEMPERATURE
toc01
75
70
65
60 WITH EXTERNAL 33MΩ
RESISTOR FROM IN TO EN
55
50
45
40
-50
-25 0 25 50
TEMPERATURE (ºC)
75 100
400.0
350.0
300.0
250.0
200.0
150.0
100.0
50.0
0.0
0.5
MAXIMUM OUTPUT CURRENT
vs. INPUT VOLTAGE
toc04
VOUT = 3V,
L = 2.2µH
VOUT = 5V,
L = 2.2µH
VOUT = 3.3V,
L = 2.2µH
1.5 2.5 3.5
INPUT VOLTAGE (V)
4.5
350
300
250
200
150
100
50
0
0.5
MAXIMUM OUTPUT CURRENT
vs. INPUT VOLTAGE
toc03
VOUT = 3V,
L = 1µH
VOUT = 5V,
L = 1µH
VOUT = 3.3V,
L = 1µH
1.0 1.5 2.0 2.5
INPUT VOLTAGE (V)
3.0
800
700
600
500
400
300
200
100
0.50
INDUCTORCURRENT LIMIT
vs. INPUT VOLTAGE
VOUT = 5V,
L = 1µH
VOUT = 3.3V,
L = 1µH
toc05
VOUT = 3.3V,
L = 2.2µH
VOUT = 5V,
L = 2.2µH
1.00 1.50 2.00 2.50
INPUT VOLTAGE (V)
3.00
OUTPUTVOLTAGEERROR vs.LOADCURRENT
(VOUT = 3.3V)
4 toc06
3 VIN = 2.5V
2 VIN = 2V
1
VIN = 1V
0
VIN = 1.5V
-1
-2 VIN = 0.8V
-3
-4
1
100
10000
1000000
LOAD CURRENT (µA)
EFFICIENCY vs. LOAD CURRENT
100
(VOUT = 3.3V)
toc07
90
80
70
60
VIN
=
2.5V
VIN
=
VIN
2V
=
1.5V
VIN
=
1V
50
40
1
10 100 1000 10000 100000 1000000
LOAD CURRENT (µA)
STARTUP VOLTAGEvs. LOAD CURRENT
(VOUT = 3.3V)
3 toc08
RS IS THE SOURCE RESISTANCE
2.5
2
1.5
1
0.5
0
0.1
RS = 30
RS = 5
RS = 1
10 1000
LOAD CURRENT (µA)
100000
www.maximintegrated.com
Maxim Integrated 5