MAX17225ELT+T

Typical Operating Circuit

Manufacturer

Analog Devices Inc./Maxim Integrated

Category

Integrated Circuits (ICs)

Package

6-WDFN

Lifecycle

Active

Overview

Part: MAX17220–MAX17225 from Maxim Integrated

Type: nanoPower Synchronous Boost Converter

Key Specs:

  • Input Voltage Range: 400mV to 5.5V
  • Output Voltage Range: 1.8V to 5V
  • Peak Inductor Current Limit: 225mA, 500mA, 1A
  • Quiescent Supply Current into OUT: 300nA
  • Shutdown Current: 0.5nA
  • Peak Efficiency: 95%
  • Minimum Startup Voltage: 0.88V

Features:

  • True Shutdown Mode
  • Output disconnects from input with no forward or reverse current
  • Single 1% resistor-selectable output voltage
  • Enable Transient Protection (ETP) for MAX17220/MAX17222/MAX17224 versions
  • Ultra-low quiescent current
  • Small total solution size
  • High efficiency throughout the entire load range

Applications:

  • Optical Heart-Rate Monitoring (OHRM) LED Drivers
  • Supercapacitor Backup for Real-Time Clock (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

Package:

  • 2mm x 2mm, 6-Pin μDFN
  • 0.88mm x 1.4mm, 6-Bump WLP (2 x 3, 0.4mm Pitch)

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/MAX17221: 225mA ILIM
    • 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)

Applications

  • Optical Heart-Rate Monitoring (OHRM) LED Drivers
  • Supercapacitor Backup for Real-Time Clock (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

Pin Configuration

Electrical Characteristics

(VIN = VEN = 1.5V, VOUT = 3V, TA = -40°C to +125°C, typical values are at TA = +25°C, unless otherwise noted. (Note 2))

PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
Minimum Input VoltageVIN_MINRuns from output after startup, IOUT
=
1mA		400mV
Input Voltage RangeVINGuaranteed by LX Maximum On-Time0.955.5V
Minimum Startup Input
Voltage		VIN_STARTUPRL
≥ 3kΩ, Typical Operating Circuit, TA
=
+25°C		0.880.95V
Output Voltage RangeVOUTSee RSEL
Selection Table.
For VIN
< VOUT
target (Note 3)		1.85V
Output Accuracy, LPMACCLPMVOUT
falling, when LX switching
frequency is > 1MHz (Note 4)		-1.5+1.5%
Output Accuracy, Ultra
Low-Power Mode		ACCULPMVOUT
falling, when LX switching
frequency is > 1kHz (Note 5)		12.54%
MAX17220/2/4TA= +25°C.300600
Quiescent Supply
IQ_OUT
Current Into OUT		EN = open after
startup,
MAX17221/3/5 EN
= VIN,
not switching,
RSEL OPEN,
VOUT
= 104% of
1.8V		TA
= +85°C		470900nA
MAX17220/2/4
EN = open after
startup MAX17221/
3/5 EN = VIN,
not switching,
RSEL OPEN,
VOUT
= 104% of
1.8V		TA
= +125°C		10002000
Quiescent Supply
Current Into IN		IQ_INVOUT = 104% of
1.8V,		TA
= +25°C		0.1nA
Total Quiescent Supply
Current into IN, LX, EN		IQ_IN_TOTALMAX17220/2/4 EN = Open after startup.
MAX17221/3/5 EN = VIN, not switching,
VOUT
= 104% of 1.8V, total current
includes IN, LX, and EN, TA
= +25°C		0.5100nA
Shutdown Current Into
IN		ISD_INMAX17220/1/2/3/4/5, RL
= 3kΩ,
VOUT
= VEN
= 0V, TA
= +25°C		0.1nA
Total Shutdown Current
into IN, LX		ISD_TOTALMAX17220/1/2/3/4/5, RL= 3kΩ,
VEN
= 0V, TA
= +25°C		0.5100nA
Inductor Peak Current
IPEAK
Limit		MAX17220/1180225270mA
(Note 6)MAX17222/30.40.50.575
MAX17224/50.811.2A
LX Maximum Duty CycleDC(Note 7)7075%
LX Maximum On-Time(Note 7)VOUT
= 1.8V		280365450ns
tONVOUT
= 3.0V		270300330
LX Minimum Off-Time(Note 7)VOUT
= 1.8V		90120150
ns
tOFFVOUT
= 3.0V		80100120

Absolute Maximum Ratings

OUT, EN, IN to GND -0.3V to +6VContinuous Power Dissipation (TA
= +70°C)
RSEL
to GND -0.3V to Lower of (VOUT
+ 0.3V) or +6V		μDFN (derate 4.5mW/°C above +70°C) 357.8mW
LX RMS Current WLP -1.6ARMS
to 1.6ARMS		Operating Temperature Range -40°C to +125°C
LX RMS Current μDFN -1ARMS
to +1ARMS		Junction Temperature +150°C
LX to GND (Note 1) -0.3V to VOUT
+ 0.3V		Storage Temperature Range -40°C to +150°C
Continuous Power Dissipation (TA
= +70°C)		Soldering Temperature (reflow) +260°C
WLP (derate 10.5mW/°C above +70°C) 840mW

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.

Related Variants

The following components are covered by the same datasheet.

Part NumberManufacturerPackage
MAX17225Analog Devices Inc./Maxim Integrated—
MAX17225ALTAnalog Devices Inc./Maxim Integrated—
MAX17225ELTAnalog Devices Inc./Maxim Integrated—
MAX17225ENTAnalog Devices Inc./Maxim Integrated—
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