LTC3335

RECOMMENDED FOR NEW DESIGNS

Nanopower Buck-Boost DC/DC with Integrated Coulomb Counter

Data Sheet Product Selection Table

Part Models: 4
1ku List Price: Starting From $4.01

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Part Details

680nA Input Quiescent Current (Output in Regulation at No Load)
1.8V to 5.5V Input Operating Range
Selectable Output Voltages of 1.8V, 2.5V, 2.8V, 3V, 3.3V, 3.6V, 4.5V, 5V
Integrated Coulomb Counter Measures Accumulated Battery Discharge
±5% Battery Discharge Measurement Accuracy
Programmable Peak Input Current of 5mA, 10mA, 15mA, 25mA, 50mA, 100mA, 150mA, 250mA
Up to 50mA of Output Current
Up to 90% Efficiency
Programmable Coulomb Counter Prescaler for Wide Range of Battery Sizes
Programmable Discharge Alarm Threshold
I²C Interface
Low Profile (0.75mm) 20-Lead (3mm × 4mm) QFN Package

Part Models: 4
1ku List Price: Starting From $4.01

Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LTC3335EUDC#PBF	20-Lead QFN (3mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3335EUDC#TRPBF	20-Lead QFN (3mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3335IUDC#PBF	20-Lead QFN (3mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3335IUDC#TRPBF	20-Lead QFN (3mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Hardware Ecosystem

Parts	Product Life Cycle	Description
Pushbutton Controllers 1
LTC2956	RECOMMENDED FOR NEW DESIGNS	Wake-Up Timer with Pushbutton Control

Parts	Product Life Cycle	Description
LTC3129	RECOMMENDED FOR NEW DESIGNS	15V, 200mA Synchronous Buck-Boost DC/DC Converter with 1.3μA Quiescent Current

Tools & Simulations

Linduino 5

Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.

Linduino code repository on GitHub and instructions on how to use the code.

Purchase Linduino

Evaluation Kits

LTC3335 Demo Board | 680nA Iq Buck-Boost with Coulomb Counter, 1.8V ≤ VIN ≤ 5.5V, VOUT = 1.8V to 5V @ 15mA

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Product Details

Demonstration circuit DC2343A is a complete system level solution for a nanopower buck-boost DC/DC with integrated coulomb counter. The DC2343A contains a PIC16F1459 embedded processor for communication to the PC over USB and the LTC3335 via its I²C port. The GUI is capable of reading and writing all the control registers on the LTC3335 as well as displaying and resetting all its alarm registers. The firmware and software for the embedded system and the GUI are available at the LTC3335 solutions page. The DC2343A uses two analog-to-digital converter channels to sample the battery and output voltages. The voltage samples improve the functionality of the GUI, and allow optimal software correction to the measured coulombs. By adding the software correction the first order known errors are compensated for over the operating range and the resultant coulomb count is accurate to within 3%.