Analog Devices LTC3331

Overview

Topology	Buck-Boost Converter
Input voltage	3-19 V
Output 1	150 V
IC revision	C

Description

The LTC®3331 integrates a high voltage energy harvesting power supply plus a buck-boost DC/DC powered from a rechargeable battery to create a single output supply for alternative energy applications. A 10mA shunt allows simple charging of the battery with harvested energy while a lowbattery disconnect function protects the battery from deep discharge. The energy harvesting power supply, consisting of an integrated full-wave bridge rectifier and a high voltage buck DC/DC, harvests energy from piezoelectric, solar, or magnetic sources. Either DC/DC converter can deliver energy to a single output. The buck operates when harvested energy is available, reducing the quiescent current draw on the battery to the 200nA required by the shunt charger, thereby extending the life of the battery. The buck-boost powers VOUT only when harvested energy is unavailable.A supercapacitor balancer is also integrated, allowing for increased output storage. Voltage and current settings for both inputs and outputs are programmable via pin-strapped logic inputs. The LTC3331 is available in a 5mm × 5mm QFN-32 package.

Features

Dual Input, Single Output DC/DCs with InputPrioritizerEnergy Harvesting Input: 3.0V to 19V Buck DC/DCBattery Input: Up to 4.2V Buck-Boost DC/DC
10mA Shunt Battery Charger with ProgrammableFloat Voltages: 3.45V, 4.0V, 4.1V, 4.2V
Low Battery Disconnect
Ultra Low Quiescent Current: 950nA at no Load
Integrated Supercapacitor Balancer
Up to 50mA of Output Current
Programmable DC/DC Output Voltage, Buck UVLO,and Buck-Boost Peak Input Current
Integrated Low-Loss Full-Wave Bridge Rectifier
Input Protective Shunt: Up to 25mA at VIN ≥ 20V
5mm × 5mm QFN-32 PackageREMARKS:-ReferTable 6. Recommended Inductors for the LTC3331pAGE NO 25

Typical applications

Mobile Asset Tracking
Solar Powered Systems with Battery Backup
Wireless HVAC Sensors and Security Devices
Energy Harvesting

More information

Products

Order Code	Datasheet	Simulation	Downloads	Status	Product series	L(µH)	I_R(A)	I_SAT(A)	f_res(MHz)	Mount
744031220	WE-TPC SMT Tiny Power Inductor, 22 µH, 0.51 A	Simulation	Downloads9 files EDA models: Components ZIP ALT WE-TPC (rev23a).IntLib \| 1.5 MB CDS Cadence_WE-TPC (rev23a).zip \| 10.8 MB EAG Eagle_WE-TPC (rev23b).lbr \| 219.3 KB KIC KiCad_WE-TPC (rev25b).zip \| 3.9 MB ZUK Download_CadStar_WE-TPC (rev19a).zip \| 47.5 KB CAD files ZIP IGS WE-TPC_3816 (rev1).igs \| 1.5 MB STP WE-TPC_3816 (rev1).stp \| 529.2 KB Electric models ZIP PSP PSpice_WE-TPC (rev23a).zip \| 39.9 KB SCS Spectre_WE-TPC (rev24a).mod \| 52.7 KB Download all 9 files as zip archive ZIP	Status Activei\| Production is active. Expected lifetime: >10 years.	Product seriesWE-TPC SMT Tiny Power Inductor	Inductance22 µH	Rated Current0.51 A	Saturation Current0.36 A	Self Resonant Frequency26 MHz	MountSMT
744031330	WE-TPC SMT Tiny Power Inductor, 33 µH, 0.42 A	Simulation	Downloads9 files EDA models: Components ZIP ALT WE-TPC (rev23a).IntLib \| 1.5 MB CDS Cadence_WE-TPC (rev23a).zip \| 10.8 MB EAG Eagle_WE-TPC (rev23b).lbr \| 219.3 KB KIC KiCad_WE-TPC (rev25b).zip \| 3.9 MB ZUK Download_CadStar_WE-TPC (rev19a).zip \| 47.5 KB CAD files ZIP IGS WE-TPC_3816 (rev1).igs \| 1.5 MB STP WE-TPC_3816 (rev1).stp \| 529.2 KB Electric models ZIP PSP PSpice_WE-TPC (rev23a).zip \| 39.9 KB SCS Spectre_WE-TPC (rev24a).mod \| 52.7 KB Download all 9 files as zip archive ZIP	Status Activei\| Production is active. Expected lifetime: >10 years.	Product seriesWE-TPC SMT Tiny Power Inductor	Inductance33 µH	Rated Current0.42 A	Saturation Current0.32 A	Self Resonant Frequency25 MHz	MountSMT
744031470	WE-TPC SMT Tiny Power Inductor, 47 µH, 0.39 A	Simulation	Downloads9 files EDA models: Components ZIP ALT WE-TPC (rev23a).IntLib \| 1.5 MB CDS Cadence_WE-TPC (rev23a).zip \| 10.8 MB EAG Eagle_WE-TPC (rev23b).lbr \| 219.3 KB KIC KiCad_WE-TPC (rev25b).zip \| 3.9 MB ZUK Download_CadStar_WE-TPC (rev19a).zip \| 47.5 KB CAD files ZIP IGS WE-TPC_3816 (rev1).igs \| 1.5 MB STP WE-TPC_3816 (rev1).stp \| 529.2 KB Electric models ZIP PSP PSpice_WE-TPC (rev23a).zip \| 39.9 KB SCS Spectre_WE-TPC (rev24a).mod \| 52.7 KB Download all 9 files as zip archive ZIP	Status Activei\| Production is active. Expected lifetime: >10 years.	Product seriesWE-TPC SMT Tiny Power Inductor	Inductance47 µH	Rated Current0.39 A	Saturation Current0.25 A	Self Resonant Frequency20 MHz	MountSMT
744031101	WE-TPC SMT Tiny Power Inductor, 100 µH, 0.25 A	Simulation	Downloads9 files EDA models: Components ZIP ALT WE-TPC (rev23a).IntLib \| 1.5 MB CDS Cadence_WE-TPC (rev23a).zip \| 10.8 MB EAG Eagle_WE-TPC (rev23b).lbr \| 219.3 KB KIC KiCad_WE-TPC (rev25b).zip \| 3.9 MB ZUK Download_CadStar_WE-TPC (rev19a).zip \| 47.5 KB CAD files ZIP IGS WE-TPC_3816 (rev1).igs \| 1.5 MB STP WE-TPC_3816 (rev1).stp \| 529.2 KB Electric models ZIP PSP PSpice_WE-TPC (rev23a).zip \| 39.9 KB SCS Spectre_WE-TPC (rev24a).mod \| 52.7 KB Download all 9 files as zip archive ZIP	Status Activei\| Production is active. Expected lifetime: >10 years.	Product seriesWE-TPC SMT Tiny Power Inductor	Inductance100 µH	Rated Current0.25 A	Saturation Current0.18 A	Self Resonant Frequency10 MHz	MountSMT
744042221	WE-TPC SMT Tiny Power Inductor, 220 µH, 0.2 A	Simulation	Downloads9 files EDA models: Components ZIP ALT WE-TPC (rev23a).IntLib \| 1.5 MB CDS Cadence_WE-TPC (rev23a).zip \| 10.8 MB EAG Eagle_WE-TPC (rev23b).lbr \| 219.3 KB KIC KiCad_WE-TPC (rev25b).zip \| 3.9 MB ZUK Download_CadStar_WE-TPC (rev19a).zip \| 47.5 KB CAD files ZIP IGS WE-TPC_4818 (rev1).igs \| 1.3 MB STP WE-TPC_4818 (rev1).stp \| 458 KB Electric models ZIP PSP PSpice_WE-TPC (rev23a).zip \| 39.9 KB SCS Spectre_WE-TPC (rev24a).mod \| 52.7 KB Download all 9 files as zip archive ZIP	Status Activei\| Production is active. Expected lifetime: >10 years.	Product seriesWE-TPC SMT Tiny Power Inductor	Inductance220 µH	Rated Current0.2 A	Saturation Current0.16 A	Self Resonant Frequency7 MHz	MountSMT
744042331	WE-TPC SMT Tiny Power Inductor, 330 µH, 0.15 A	Simulation	Downloads9 files EDA models: Components ZIP ALT WE-TPC (rev23a).IntLib \| 1.5 MB CDS Cadence_WE-TPC (rev23a).zip \| 10.8 MB EAG Eagle_WE-TPC (rev23b).lbr \| 219.3 KB KIC KiCad_WE-TPC (rev25b).zip \| 3.9 MB ZUK Download_CadStar_WE-TPC (rev19a).zip \| 47.5 KB CAD files ZIP IGS WE-TPC_4818 (rev1).igs \| 1.3 MB STP WE-TPC_4818 (rev1).stp \| 458 KB Electric models ZIP PSP PSpice_WE-TPC (rev23a).zip \| 39.9 KB SCS Spectre_WE-TPC (rev24a).mod \| 52.7 KB Download all 9 files as zip archive ZIP	Status Activei\| Production is active. Expected lifetime: >10 years.	Product seriesWE-TPC SMT Tiny Power Inductor	Inductance330 µH	Rated Current0.15 A	Saturation Current0.13 A	Self Resonant Frequency5.5 MHz	MountSMT
744043471	WE-TPC SMT Tiny Power Inductor, 470 µH, 0.24 A	Simulation	Downloads9 files EDA models: Components ZIP ALT WE-TPC (rev23a).IntLib \| 1.5 MB CDS Cadence_WE-TPC (rev23a).zip \| 10.8 MB EAG Eagle_WE-TPC (rev23b).lbr \| 219.3 KB KIC KiCad_WE-TPC (rev25b).zip \| 3.9 MB ZUK Download_CadStar_WE-TPC (rev19a).zip \| 47.5 KB CAD files ZIP IGS WE-TPC_4828 (rev1).igs \| 1.5 MB STP WE-TPC_4828 (rev1).stp \| 577.2 KB Electric models ZIP PSP PSpice_WE-TPC (rev23a).zip \| 39.9 KB SCS Spectre_WE-TPC (rev24a).mod \| 52.7 KB Download all 9 files as zip archive ZIP	Status Activei\| Production is active. Expected lifetime: >10 years.	Product seriesWE-TPC SMT Tiny Power Inductor	Inductance470 µH	Rated Current0.24 A	Saturation Current0.125 A	Self Resonant Frequency3 MHz	MountSMT
744043102	WE-TPC SMT Tiny Power Inductor, 1000 µH, 0.14 A	Simulation	Downloads9 files EDA models: Components ZIP ALT WE-TPC (rev23a).IntLib \| 1.5 MB CDS Cadence_WE-TPC (rev23a).zip \| 10.8 MB EAG Eagle_WE-TPC (rev23b).lbr \| 219.3 KB KIC KiCad_WE-TPC (rev25b).zip \| 3.9 MB ZUK Download_CadStar_WE-TPC (rev19a).zip \| 47.5 KB CAD files ZIP IGS WE-TPC_4828 (rev1).igs \| 1.5 MB STP WE-TPC_4828 (rev1).stp \| 577.2 KB Electric models ZIP PSP PSpice_WE-TPC (rev23a).zip \| 39.9 KB SCS Spectre_WE-TPC (rev24a).mod \| 52.7 KB Download all 9 files as zip archive ZIP	Status Activei\| Production is active. Expected lifetime: >10 years.	Product seriesWE-TPC SMT Tiny Power Inductor	Inductance1000 µH	Rated Current0.14 A	Saturation Current0.08 A	Self Resonant Frequency2.3 MHz	MountSMT

IC manufacturers (103)

Nanopower Buck-Boost DC/DC with Energy Harvesting Battery Charger