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    TPS65217CRSLR

    3 Description
    The TPS65217x is a single-chip power management
    IC (PMIC) specifically designed to power the AM335x
    ARM® Cortex®
    -A8 processor in portable and 5-V linepowered applications. The PMIC device provides a
    linear battery charger for single-cell Li-ion and Lipolymer batteries, dual-input power path, three stepdown converters, four low-dropout (LDO) regulators,
    and a high-efficiency boost converter to power two
    strings of up to 10 LEDs each. The system can be
    supplied by any combination of USB port, 5-V AC
    adaptor, or Li-Ion battery. The device is characterized
    across a –40°C to +105°C temperature range which
    makes it suitable for industrial applications. Three
    high-efficiency 2.25-MHz step-down converters can
    providing the core voltage, 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.

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      SPECIFICATION

      • Charger and Power Path
      – 2-A Output Current on Power Path
      – Linear Charger; 700-mA Maximum Charge
      Current
      – 20-V Tolerant USB and AC Inputs
      – Thermal Regulation, Safety Timers
      – Temperature Sense Input
      • Step-Down Converter (DCDC1, DCDC2,
      DCDC3)
      – Three Step-Down Converter With Integrated
      Switching FETs
      – 2.25-MHz Fixed Frequency Operation
      – Power-Save Mode at Light-Load Current
      – Output Voltage Accuracy in PWM Mode ±2%
      – 100% Duty Cycle for Lowest Dropout
      – Typical 15-µA Quiescent per Converter
      – Passive Discharge to Ground When Disabled
      • LDO Regulators (LDO1, LDO2)
      – Two Adjustable LDOs
      – LDO2 can be Configured to Track DCDC3
      – 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-V Open-LED Protection
      – Supports Two Strings of up to 10 LEDs at
      25 mA Each
      – Internal Low-Side Current Sinks
      • Protection
      – Undervoltage Lockout and Battery Fault
      Comparator
      – Always-On Push-Button Monitor
      – Hardware Reset Pin
      – Password Protected I
      2C Registers
      • Interface
      – I
      2C Interface (Address 0x24)
      – Password-Protected I
      2C Registers