LTC3576-1 Datasheet

Part No.	In Stock	Price	Packaging	SPQ	Marking	MSL	Pins	Temp Range	Package Description
LTC3576EUFE-1#PBF	169pcs	-	Tube	61	35761	1	38	-40°C ~ 85°C	38-Lead QFN
LTC3576EUFE-1#TRPBF	0	-	Reel	2500	35761	1	38	-40°C ~ 85°C	38-Lead QFN

• 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 I_OUT)
• 180mΩ Internal Ideal Diode + External Ideal Diode Controller Powers the Load in Battery Mode
• Li-Ion/Polymer Battery Charger (1.5A Max I_CHG)
• Battery Float Voltage: 4.1V (LTC3576-1)
• Compact (4mm × 6mm × 0.75mm) 38-pin QFN Package

• HDD-Based Media Players
• GPS, PDAs, Digital Cameras, Smart Phones
• Automotive Compatible Portable Electronics

The 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 LTC3576-1 from damage due to high voltage on the V_BUS or WALL pins with just two external components. The LTC3576-1 are available in a low profile 38-pin (4mm × 6mm × 0.75mm) QFN package.