TPS65217DRSLR Texas Instruments MCU

TPS65217DRSLR Overview

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Description

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

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 25mAEach
- 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