LTC3576 Datasheet

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

Part No.:
LTC3576
Manufacturer:
Linear Technology
Page:
48 Pages
Size:
584 KB
Views:
0
Update Time:
2025-06-30 14:02:37

LTC3576 DataSheet Applicable Part

Part No. In Stock Price Packaging SPQ Marking MSL Pins Temp Range Package Description
LTC3576EUFE#PBF 1113pcs - Tube 61 3576 1 38 -40°C ~ 85°C 38-Lead QFN
LTC3576EUFE#TRPBF 0 - Reel 2500 3576 1 38 -40°C ~ 85°C 38-Lead QFN
SPQ:Standard Pack Quantity;MSL:Moisture Sensitivity Level

LTC3576 DataSheet PDF

LTC3576 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)
  • Compact (4mm × 6mm × 0.75mm) 38-pin QFN Package

LTC3576 Applications

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

LTC3576 Description

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

LTC3576 Datasheet FAQs