MAX17225ENT

Synchronous Boost DC-DC Converter

The MAX17225ENT is a synchronous boost dc-dc converter from Analog Devices Inc./Maxim Integrated. View the full MAX17225ENT datasheet below including electrical characteristics, absolute maximum ratings.

Manufacturer

Analog Devices Inc./Maxim Integrated

Overview

Part: MAX17220-MAX17225 — Analog Devices, Inc. (formerly Maxim Integrated)

Type: Ultra-low quiescent current boost (step-up) DC-DC converter

Description: A family of ultra-low quiescent current boost DC-DC converters with 225mA, 500mA, or 1A peak inductor current limits, True Shutdown, 95% peak efficiency, and a 0.4V to 5.5V input range, ideal for battery applications.

Operating Conditions:

Supply voltage: 0.4V to 5.5V
Operating temperature: -40°C to +125°C
Output voltage range: 1.8V to 5V

Absolute Maximum Ratings:

Max supply voltage: +6V (IN, OUT, EN to GND)
Max continuous current: 1.6A RMS (LX RMS Current WLP), 1A RMS (LX RMS Current μDFN)
Max junction/storage temperature: +150°C

Key Specs:

Minimum startup input voltage: 0.88V (typ, R L ≥ 3kΩ, T A = +25°C)
Quiescent supply current into OUT: 300 nA (typ, T A = +25°C)
Total shutdown current into IN, LX: 0.5 nA (typ, V EN = 0V, T A = +25°C)
Inductor peak current limit: 225 mA (typ, MAX17220/1), 500 mA (typ, MAX17222/3), 1 A (typ, MAX17224/5)
N-Channel On-Resistance: 31 mΩ (typ, MAX17224/5, V OUT = 3.3V)
P-Channel On-Resistance: 75 mΩ (typ, MAX17224/5, V OUT = 3.3V)
LX Maximum Duty Cycle: 75 % (typ)
LX Maximum On-Time: 300 ns (typ, V OUT = 3.0V)

Features:

True Shutdown Mode with 0.5nA shutdown current
Output disconnects from input with no reverse current
Single 1% resistor-selectable output voltage
Enable Transient Protection (ETP) on MAX17220/MAX17222/MAX17224 versions
Ultra-low quiescent current
Small total solution size

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:

6-Pin μDFN (2mm x 2mm)
6-Bump WLP (0.88mm x 1.4mm, 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 V OUT 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 I LIM
MAX17224/MAX17225: 1A I LIM
MAX17222/MAX17223: 500mA I LIM
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

Arm and Cortex are registered trademarks of Arm Limited. Bluetooth is a registered trademark of Bluetooth SIG, Inc. True Shutdown is a trademark of Maxim Integrated Products, Inc.

Ordering Information appears at end of data sheet.

Click here to ask an associate for production status of specific part numbers.

Pin Configuration

Electrical Characteristics

(V IN = V EN = 1.5V, V OUT = 3V, T A = -40°C to +125°C, typical values are at T A = +25°C, unless otherwise noted. ( Note 2 ))

PARAMETER	SYMBOL	CONDITIONS	CONDITIONS	MIN	TYP	MAX	UNITS
Minimum Input Voltage	V IN_MIN	Runs from output after startup, I OUT = 1mA	Runs from output after startup, I OUT = 1mA		400		mV
Input Voltage Range	V IN	Guaranteed by LX Maximum On-Time	Guaranteed by LX Maximum On-Time	0.95		5.5	V
Minimum Startup Input Voltage	V IN_STARTUP	R L ≥ 3kΩ, Typical Operating Circuit , T A = +25°C	R L ≥ 3kΩ, Typical Operating Circuit , T A = +25°C		0.88	0.95	V
Output Voltage Range	V OUT	See R SEL Selection Table . For V IN < V OUT target ( Note 3 )	See R SEL Selection Table . For V IN < V OUT target ( Note 3 )	1.8		5	V
Output Accuracy, LPM	ACC LPM	V OUT falling, when LX switching frequency is > 1MHz ( Note 4 )	V OUT falling, when LX switching frequency is > 1MHz ( Note 4 )	-1.5		+1.5	%
Output Accuracy, Ultra- Low-Power Mode	ACC ULPM	V OUT falling, when LX switching frequency is > 1kHz ( Note 5 )	V OUT falling, when LX switching frequency is > 1kHz ( Note 5 )	1	2.5	4	%
Quiescent Supply Current Into OUT	I Q_OUT	MAX17220/2/4 EN = open after startup, MAX17221/3/5 = V IN , not switching, RSEL OPEN,	T A = +25°C.		300	600	nA
Quiescent Supply Current Into OUT	I Q_OUT	EN V OUT = 104% of 1.8V	T A = +85°C		470	900	nA
Quiescent Supply Current Into OUT	I Q_OUT	MAX17220/2/4 EN = open after startup MAX17221/ 3/5 EN = V IN , not switching, RSEL OPEN, V OUT = 104% of 1.8V	T A = +125°C		1000	2000	nA
Quiescent Supply Current Into IN	I Q_IN	V OUT = 104% of 1.8V,	T A = +25°C		0.1		nA
Total Quiescent Supply Current into IN, LX, EN	I Q_IN_TOTAL	MAX17220/2/4 EN = Open after startup. MAX17221/3/5 EN = V IN , not switching, V OUT = 104% of 1.8V, total current includes IN, LX, and EN, T A = +25°C	MAX17220/2/4 EN = Open after startup. MAX17221/3/5 EN = V IN , not switching, V OUT = 104% of 1.8V, total current includes IN, LX, and EN, T A = +25°C		0.5	100	nA
Shutdown Current Into IN	I SD_IN	MAX17220/1/2/3/4/5, R L = 3kΩ, V OUT = V EN = 0V, T A = +25°C	MAX17220/1/2/3/4/5, R L = 3kΩ, V OUT = V EN = 0V, T A = +25°C		0.1		nA
Total Shutdown Current into IN, LX	I SD_TOTAL	MAX17220/1/2/3/4/5, R L = 3kΩ, V EN = 0V, T A = +25°C	MAX17220/1/2/3/4/5, R L = 3kΩ, V EN = 0V, T A = +25°C		0.5	100	nA
Inductor Peak Current Limit	I PEAK	( Note 6 )	MAX17220/1	180	225	270	mA
Inductor Peak Current Limit	I PEAK	( Note 6 )	MAX17222/3	0.4	0.5	0.575	A
Inductor Peak Current Limit	I PEAK	( Note 6 )	MAX17224/5	0.8	1	1.2	A
LX Maximum Duty Cycle	DC	( Note 7 )	( Note 7 )	70	75		%
LX Maximum On-Time	t ON	( Note 7	V OUT = 1.8V	280	365	450	ns
LX Maximum On-Time	t ON	)	V OUT = 3.0V	270	300	330	ns
LX Minimum Off-Time	t OFF	( Note 7 )	V OUT = 1.8V V OUT = 3.0V	90 80	120 100	150 120	ns

Absolute Maximum Ratings

OUT, EN, IN to GND................................................ -0.3V to +6V R SEL to GND................. -0.3V to Lower of (V OUT + 0.3V) or +6V LX RMS Current WLP............................... -1.6A RMS to 1.6A RMS LX RMS Current μDFN.................................. -1A RMS to +1A RMS LX to GND ( Note 1 ) .................................... -0.3V to V OUT + 0.3V Continuous Power Dissipation (T A = +70°C) WLP (derate 10.5mW/°C above +70°C) .......................840mW

Continuous Power Dissipation (T A = +70°C) μDFN (derate 4.5mW/°C above +70°C).....................357.8mW Operating Temperature Range...........................-40°C to +125°C Junction Temperature.......................................................+150°C Storage Temperature Range..............................-40°C to +150°C Soldering Temperature (reflow) ........................................+260°C

Note 1: The LX pin has internal clamps to GND and OUT. These diodes may be forward biased during switching transitions. During these transitions, the maximum LX current should be within the maximum RMS current rating for safe operation.

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 Number	Manufacturer	Package
MAX17225	Analog Devices Inc./Maxim Integrated	—
MAX17225ALT	Analog Devices Inc./Maxim Integrated	—
MAX17225ELT	Analog Devices Inc./Maxim Integrated	—
MAX17225ELT+T	Analog Devices Inc./Maxim Integrated	6-WDFN

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