(ACTIVE) Power Management IC (PMIC) w/ 3 DC/DCs, 4 LDOs, Linear Battery Charger & White LED Driver


Functional Diagram


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 line-powered applications. The PMIC device provides a linear battery charger for single-cell Li-ion and 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. 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.


  • 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 I2C Registers
  • Interface
    • I2C Interface (Address 0x24)
    • Password-Protected I2C Registers

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Regulated Outputs (#) 9    
Processor Supplier Texas Instruments    
Processor Name AM335x    
Vin (Min) (V) 2.75    
Vin (Max) (V) 5.8    
Step-Up DC/DC Controller 0    
Step-Down DC/DC Controller 0    
LDO 4    
Step-Up DC/DC Converter 1    
Step-Down DC/DC Converter 4    
Iout (Max) (A) 1.2    
Iq (Typ) (mA) 0.08    
Features Comm Control    
Shutdown Current (Typ) (uA) 6    
Rating Catalog    
Operating Temperature Range (C) -40 to 105    
Pin/Package 48VQFN    
Configurability Factory programmable^Customer programmable^Software configurable    

Companion Products

Technical Documents

Datasheet (1)

Application notes (4)

User guides (2)

Selection guides (3)

White papers (1)

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