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LTC3554 Datasheet Micropower USB Power Manager

Manufacturer: Linear Technology (now Analog Devices)

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General Description

n 10μA Standby Mode Quiescent Current (All Outputs On) n Seamless Transition Between Input Power Sources: Li-Ion/Polymer Battery and USB n 240mΩ Internal Ideal Diode n Dual High Efficiency Step-Down Switching Regulators (200mA IOUT) with Adjustable Output Voltages n Pushbutton On/Off Control with System Reset n Reset Time: 5 sec (LTC3554/LTC3554-1), 14 sec (LTC3554-2/LTC3554-3) n Full Featured Li-Ion/Polymer Battery Charger n Programmable Charge Current with Thermal Limiting n Instant-On Operation with Discharged Battery n Battery Float Voltage: 4.2V (LTC3554/LTC3554-2/ LTC3554-3), 4.1V (LTC3554-1) n 3mm × 3mm × 0.75mm 20-Lead QFN Package Applications n USB-Based Handheld Products n Portable Li-Ion/Polymer Based Electronic Devices n Fitness Computers n Low Power Medical Devices The LTC®3554 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

Overview

LTC3554/LTC3554-1/ LTC3554-2/LTC3554-3.

Key Features

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

More Datasheets from Linear Technology (now Analog Devices)

Part Number Description
LTC3554-1 Micropower USB Power Manager
LTC3554-2 Micropower USB Power Manager
LTC3554-3 Micropower USB Power Manager
LTC3553-2 Micropower USB Power Manager
LTC3555-1 High Efficiency USB Power Manager + Triple Step-Down DC/DC
LTC3555-3 High Efficiency USB Power Manager + Triple Step-Down DC/DC
LTC3525D-3.3 400mA Micropower Synchronous Step-Up DC/DC Converter
LTC3525L-3 400mA Micropower Synchronous Step-Up DC/DC Converter
LTC3526L-2 550mA 2MHz Synchronous Step-Up DC/DC Converters
LTC3526LB-2 550mA 2MHz Synchronous Step-Up DC/DC Converters