LTC3576LTC3576-1 Series

Switching Power Manager with USB On-the-Go + Triple Step-Down DC/DCs

Catalog

Switching Power Manager with USB On-the-Go + Triple Step-Down DC/DCs

Part	Mounting Type	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Applications	Package / Case	Voltage - Supply [Min]	Voltage - Supply [Max]
Analog Devices LTC3576EUFE-1#PBF	Surface Mount	38-QFN (4x6)	85 °C	-40 °C	Handheld/Mobile Devices	38-WFQFN Exposed Pad	4.35 V	5.5 V
Analog Devices LTC3576EUFE#PBF	Surface Mount	38-QFN (4x6)	85 °C	-40 °C	Handheld/Mobile Devices	38-WFQFN Exposed Pad	4.35 V	5.5 V
Analog Devices LTC3576EUFE-1#TRPBF	Surface Mount	38-QFN (4x6)	85 °C	-40 °C	Handheld/Mobile Devices	38-WFQFN Exposed Pad	4.35 V	5.5 V
Analog Devices LTC3576EUFE#TRPBF	Surface Mount	38-QFN (4x6)	85 °C	-40 °C	Handheld/Mobile Devices	38-WFQFN Exposed Pad	4.35 V	5.5 V

Catalog

Switching Power Manager with USB On-the-Go + Triple Step-Down DC/DCs

Key Features

• Bidirectional Switching Regulator with Bat-Track™Adaptive Output Control Provides Efficient Charging and a 5V Output for USB On-The-Go

• Bat-Track Control of External High Voltage Step-Down Switching Regulator

• Overvoltage Protection Guards Against Damage

• Instant-On Operation with Discharged Battery

• Triple Step-Down Switching Regulators with I2C Adjustable Outputs (1A/400mA/400mA IOUT)

• 180mΩ Internal Ideal Diode + External Ideal Diode Controller Powers the Load in Battery Mode

• Li-Ion/Polymer Battery Charger (1.5A Max ICHG)

• Battery Float Voltage: 4.2V (LTC3576), 4.1V (LTC3576-1)

• Compact (4mm × 6mm × 0.75mm) 38-pin QFN Package

Description

The LTC3576/LTC3576-1 are highly integrated power management and battery charger ICs for Li-Ion/Polymer battery applications. They each include a high efficiency, bidirectional switching PowerPath™manager with automatic load prioritization, a battery charger, an ideal diode, a controller for an external high voltage switching regulator and three general purpose step-down switching regulators with I2C adjustable output voltages. The internal switching regulators automatically limit input current for USB compatibility and can also generate 5V at 500mA for USB on-the-go applications when powered from the battery. Both the USB and external switching regulator power paths feature Bat-Track optimized charging to provide maximum power to the application from supplies as high as 38V. An overvoltage circuit protects the LTC3576/LTC3576-1 from damage due to high voltage on the VBUSor WALL pins with just two external components. The LTC3576/LTC3576-1 are available in a low profile 38-pin (4mm × 6mm × 0.75mm) QFN package.ApplicationsHDD-Based Media PlayersGPS, PDAs, Digital Cameras, Smart PhonesAutomotive Compatible Portable Electronics