1 Features
1• 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

2 Applications
• Sitara™ AM335x Processor Power
• Portable Navigation Systems
• Tablet Computing
• 5-V Industrial Equipment

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.