LTC3555
LTC3555-X

PRODUCTION

High Efficiency USB Power Manager + Triple Step-Down DC/DC

Data Sheet Product Selection Table

Part Models: 12
1ku List Price: Starting From $6.09

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Part Details

Power Manager

High Efficiency Switching PowerPath^™ Controller with Bat-Track^™ Adaptive Output Control
Programmable USB or Wall Current Limit (100mA/500mA/1A)
Full Featured Li-Ion/Polymer Battery Charger
1.5A Maximum Charge Current
Internal 180mΩ Ideal Diode + External Ideal Diode Controller Powers Load in Battery Mode
Low No-Load Quiescent Current when Powered from BAT (<32µA)

DC/DCs

Triple High Efficiency Step-Down DC/DCs (1A/400mA/400mA I_OUT)
All Regulators Operate at 2.25MHz
Dynamic Voltage Scaling on Two Outputs
I²C or Independent Enable, V_OUT Controls
Low No-Load Quiescent Current: 20µA
28-Pin (4mm × 5mm × 0.75mm) QFN Package

Part Models: 12
1ku List Price: Starting From $6.09

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
LTC3555EUFD#PBF	28-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3555EUFD#TRPBF	28-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3555EUFD-1#PBF	28-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3555EUFD-1#TRPBF	28-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3555EUFD-3#PBF	28-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3555EUFD-3#TRPBF	28-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3555IUFD#PBF	28-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3555IUFD#TRPBF	28-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3555IUFD-1#PBF	28-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3555IUFD-1#TRPBF	28-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3555IUFD-3#PBF	28-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3555IUFD-3#TRPBF	28-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Feb 20, 2022 - 21_0269 Addition of Alternate Assembly Site ASE Taiwan for Select LFCSP Products
		PCN21_0269_Form Material_Report Detailed Change Description Qualification Results Summary
LTC3555EUFD#PBF	PRODUCTION
LTC3555EUFD#TRPBF	PRODUCTION
LTC3555EUFD-1#PBF	PRODUCTION
LTC3555EUFD-1#TRPBF	PRODUCTION
LTC3555EUFD-3#PBF	PRODUCTION
LTC3555EUFD-3#TRPBF	PRODUCTION
LTC3555IUFD#PBF	PRODUCTION
LTC3555IUFD#TRPBF	PRODUCTION
LTC3555IUFD-1#PBF	PRODUCTION
LTC3555IUFD-1#TRPBF	PRODUCTION
LTC3555IUFD-3#PBF	PRODUCTION
LTC3555IUFD-3#TRPBF	PRODUCTION

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

Hardware Ecosystem

Parts	Product Life Cycle	Description
Battery Fuel Gauge and Coulomb Counter 1
LTC2942	NOT RECOMMENDED FOR NEW DESIGNS	Battery Gas Gauge with Temperature, Voltage Measurement
Current Sense Amplifiers 1
LTC2990	RECOMMENDED FOR NEW DESIGNS	Quad I²C Voltage, Current and Temperature Monitor
Low Voltage Hot Swap Controllers 1
LTC4362-1 LTC4362-2		1.2A Overvoltage/Overcurrent Protector
Pushbutton Controllers 1
LTC2955	RECOMMENDED FOR NEW DESIGNS	Pushbutton On/Off Controller with Automatic Turn-On