LTC3554
LTC3554-1
LTC3554-2
LTC3554-3

RECOMMENDED FOR NEW DESIGNS

LTC3554
LTC3554-1
LTC3554-2
LTC3554-3

Micropower USB Power Manager with Li-Ion Charger and Two Step-Down Regulators

RECOMMENDED FOR NEW DESIGNS

Battery Drain Current vs Temperature slide

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Part Models 8

1ku List Price Starting From $2.84

Features

10μA Standby Mode Quiescent Current (All Outputs On)
Seamless Transition Between Input Power Sources: Li-Ion/Polymer Battery and USB
240mΩ Internal Ideal Diode
Dual High Efficiency Step-Down Switching Regulators (200mA I_OUT) with Adjustable Output Voltages
Pushbutton On/Off Control with System Reset
Reset Time: 5 sec (LTC3554/LTC3554-1), 14 sec (LTC3554-2/LTC3554-3)
Full Featured Li-Ion/Polymer Battery Charger
Programmable Charge Current with Thermal Limiting
Instant-On Operation with Discharged Battery
Battery Float Voltage: 4.2V (LTC3554/LTC3554-2/LTC3554-3), 4.1V (LTC3554-1)
3mm × 3mm × 0.75mm 20-Lead QFN Package

Additional Details

The LTC3554 family are micropower, highly integrated power management and battery charger ICs for single-cell Li-Ion/Polymer battery applications. They include a PowerPath^™ manager with automatic load prioritization, a battery charger, an ideal diode and numerous internal protection features. Designed specifically for USB applications, the LTC3554 power managers automatically limit input current to a maximum of either 100mA or 500mA. Battery charge current is automatically reduced such that the sum of the load current and the charge current does not exceed the selected input current limit.

The LTC3554 also includes two synchronous step-down switching regulators as well as a pushbutton controller. With all supplies enabled in standby mode, the quiescent current drawn from the battery is only 10μA. The LTC3554 family are available in a 3mm × 3mm × 0.75mm 20-lead QFN package.

Applications

USB-Based Handheld Products
Portable Li-Ion/Polymer Based Electronic Devices
Fitness Computers
Low Power Medical Devices

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Ask a Question

Submit your question below and we will return the best answer from ADI’s knowledge database:

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Support

Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.

Visit the ADI Support Page

Ask the ADI community for help.

Ask the EngineerZone Community

FAQs

Sales & Ordering FAQs

Part Models 8

1ku List Price Starting From $2.84

Technical Documents 3

LTC3554: Micropower USB Power Manager with Li-Ion Charger and Two Step-Down Regulators Data Sheet 04/15/2015

R540 Reliability Data 03/26/2018

DC1468A - Demo Manual 09/24/2009

Design Resources 8

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
LTC3554EUD#PBF	20-Lead QFN (3mm x 3mm x 0.75mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC3554EUD#TRPBF	20-Lead QFN (3mm x 3mm x 0.75mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC3554EUD-1#PBF	20-Lead QFN (3mm x 3mm x 0.75mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC3554EUD-1#TRPBF	20-Lead QFN (3mm x 3mm x 0.75mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC3554EUD-2#PBF	20-Lead QFN (3mm x 3mm x 0.75mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC3554EUD-2#TRPBF	20-Lead QFN (3mm x 3mm x 0.75mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC3554EUD-3#PBF	20-Lead QFN (3mm x 3mm x 0.75mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC3554EUD-3#TRPBF	20-Lead QFN (3mm x 3mm x 0.75mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys

LTC3554EUD#PBF
Pin/Package Drawing
20-Lead QFN (3mm x 3mm x 0.75mm w/ EP)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC3554EUD#TRPBF
Pin/Package Drawing
20-Lead QFN (3mm x 3mm x 0.75mm w/ EP)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC3554EUD-1#PBF
Pin/Package Drawing
20-Lead QFN (3mm x 3mm x 0.75mm w/ EP)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC3554EUD-1#TRPBF
Pin/Package Drawing
20-Lead QFN (3mm x 3mm x 0.75mm w/ EP)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC3554EUD-2#PBF
Pin/Package Drawing
20-Lead QFN (3mm x 3mm x 0.75mm w/ EP)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC3554EUD-2#TRPBF
Pin/Package Drawing
20-Lead QFN (3mm x 3mm x 0.75mm w/ EP)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC3554EUD-3#PBF
Pin/Package Drawing
20-Lead QFN (3mm x 3mm x 0.75mm w/ EP)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC3554EUD-3#TRPBF
Pin/Package Drawing
20-Lead QFN (3mm x 3mm x 0.75mm w/ EP)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

Companion Parts 4

Parts	Product Life Cycle	Description
Battery Fuel Gauge and Coulomb Counter1
LTC2942	NOT RECOMMENDED FOR NEW DESIGNS	Battery Gas Gauge with Temperature, Voltage Measurement
Dual-Supply Monitors1
LTC2960	RECOMMENDED FOR NEW DESIGNS	36V Nano-Current Two-Input Voltage Monitor
Low Voltage Hot Swap Controllers1
LTC4362-1 LTC4362-2		1.2A Overvoltage/Overcurrent Protector
Pushbutton Controllers1
LTC2955	RECOMMENDED FOR NEW DESIGNS	Pushbutton On/Off Controller with Automatic Turn-On

DC1468A

LTC3554EPD Demo Board | Micropower USB Power Manager with Li-Ion Charger and Dual 200mA Buck Regulator

DC1468A

LTC3554EPD Demo Board | Micropower USB Power Manager with Li-Ion Charger and Dual 200mA Buck Regulator

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Product Detail

Demonstration Circuit DC1468A is a Micropower USB Power Manager with Li-Ion Charger and Two Synchronous Buck DC/DC Regulators, featuring the LTC3554. It features a USB input, a 500mA CC/CV Li-Ion linear charger, a dual synchronous buck (3.3V @ 200mA and 1.2V @ 200mA) and a push-button controller. Designed specifically for USB applications, the LTC3553 power manager automatically limits input current to a maximum of either 100mA or 500mA. Battery charge current is automatically reduced such that the sum of the load current and the charge current does not exceed the selected input current limit.

Resources

PDF

DC1468A - Demo Manual