Power Management Specialised - PMIC Sgl-Chip PMIC

Description for the TPS65217

The TPS65217x is asingle-chip power management IC (PMIC) specifically designed to power the AM335xARM®Cortex®-A8 processor in portable and 5-Vline-powered applications. The PMIC device provides a linear battery charger for single-cell Li-ionand Li-polymer batteries, dual-input power path, three step-down converters, four low-dropout (LDO)regulators, and a high-efficiency boost converter to power two strings of up to 10 LEDs each. Thesystem can be supplied by any combination of USB port, 5-V AC adaptor, or Li-Ion battery. Thedevice is characterized across a –40°C to +105°C temperature range which makes it suitable forindustrial applications. Three high-efficiency 2.25-MHz step-down converters can providing the corevoltage, memory, and I/O voltage for a system. The TPS65217x device comes in a 48-pin leadless package (6-mm × 6-mm VQFN)with a 0.4-mm pitch.

Features for the TPS65217

• Charger and Power Path
  • 2-A Output Current on Power Path
  • Linear Charger; 700-mA Maximum Charge Current
  • 20-VTolerant USB and AC Inputs
  • Thermal Regulation, SafetyTimers
  • Temperature Sense Input
• Step-Down Converter (DCDC1, DCDC2, DCDC3)
  • Three Step-Down Converter With Integrated SwitchingFETs
  • 2.25-MHz Fixed Frequency Operation
  • Power-Save Modeat Light-Load Current
  • Output Voltage Accuracy in PWM Mode±2%
  • 100% Duty Cycle for Lowest Dropout
  • Typical 15-µAQuiescent per Converter
  • Passive Discharge to Ground When Disabled
• LDO Regulators (LDO1, LDO2)
  • Two Adjustable LDOs
  • LDO2 can be Configured to TrackDCDC3
  • Typical 15-µA Quiescent Current
• Load Switches (LDO3, LDO4)
  • Two Independent Load Switches That Can Be Configured as LDOs
• WLED Driver
  • Internally Generated PWM for Dimming Control
  • 38-VOpen-LED Protection
  • Supports Two Strings of up to 10 LEDs at 25 mAEach
  • Internal Low-Side Current Sinks
• Protection
  • Undervoltage Lockout and Battery Fault Comparator
  • Always-On Push-Button Monitor
  • Hardware Reset Pin
  • PasswordProtected I2C Registers
• Interface
  • I2C Interface (Address 0x24)
  • Password-Protected I2C Registers