LTC3554
LTC3554-1
LTC3554-2
LTC3554-3

RECOMMENDED FOR NEW DESIGNS

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

Data Sheet Product Selection Table

Part Models: 8
1ku List Price: Starting From $2.84

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Part Details

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

Part Models: 8
1ku List Price: Starting From $2.84

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
LTC3554EUD#PBF	20-Lead QFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3554EUD#TRPBF	20-Lead QFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3554EUD-1#PBF	20-Lead QFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3554EUD-1#TRPBF	20-Lead QFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3554EUD-2#PBF	20-Lead QFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3554EUD-2#TRPBF	20-Lead QFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3554EUD-3#PBF	20-Lead QFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3554EUD-3#TRPBF	20-Lead QFN (3mm x 3mm 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
Battery Fuel Gauge and Coulomb Counter 1
LTC2942	NOT RECOMMENDED FOR NEW DESIGNS	Battery Gas Gauge with Temperature, Voltage Measurement
Dual-Supply Monitors 1
LTC2960	RECOMMENDED FOR NEW DESIGNS	36V Nano-Current Two-Input Voltage 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

Evaluation Kits

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

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Product Details

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.