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reference designMAX17222

Analog Devices MAX17222

400mV to 5.5V Input, nanoPower Synchronous Boost Converter with True Shutdown

Overview

TopologyBoost Converter
Input voltage2.7-4.2 V
Switching frequency2500 kHz
Output 13.3 V / 0.28 A
Output 25 V / 0.19 A

Description

The MAX17220–MAX17225 is a family of ultra-lowquiescent current boost (step-up) DC-DC converters witha 225mA/0.5A/1A peak inductor current limit and TrueShutdown™. True Shutdown disconnects the output fromthe input with no forward or reverse current. The outputvoltage is selectable using a single standard 1% resistor.The 225mA (MAX17220), 500mA (MAX17221/MAX17222/MAX17223), and 1A (MAX17224/MAX17225) peak inductorcurrent limits allow flexibility when choosing inductors. TheMAX17220/MAX17222/MAX17224 versions have poststartupenable transient protection (ETP), allowing theoutput to remain regulated for input voltages down to400mV, depending on load current. The MAX17220–MAX17225 offer ultra-low quiescent current, small totalsolution size, and high efficiency throughout the entire loadrange. The MAX17220–MAX17225 are ideal for batteryapplications where long battery life is a must

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

Typical applications

  • Supercapacitor Backup for RTC/Alarm Buzzers,Wearable Devices
  • Low-Power Wireless Communication Products
  • Primary-Cell Portable Systems,Secondary-Cell Portable Systems
  • Battery-Powered Medical Equipment
  • Optical Heart-Rate Monitoring (OHRM) LED Drivers
  • Tiny, Low-Power IoT Sensors

More information

Products

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IRP,40K(A)
ISAT,30%(A)
RDC typ.(mΩ)
fres(MHz)
VOP(V)
Mount
SamplesAvailability & Sample
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74438357022
SPECWE-MAPI SMT Power Inductor, 2.2 µH, 7.1 A

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

Simu­lation
Availability
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Downloads10 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-MAPI SMT Power Inductor
Inductance2.2 µH
Performance Rated Current7.1 A
Saturation Current @ 30%9.2 A
DC Resistance22 mΩ
Self Resonant Frequency35 MHz
Operating Voltage80 V
MountSMT 
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