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TPS65217CRSLR

PMIC for AM335x, 3 bucks, 2 LDOs, battery charger, WLED, I2C, VQFN-48

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Manufacturer Part：

TPS65217CRSLR

Package：

VQFN-48 (6×6 mm, 0.4 mm pitch)

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Description

Product Overview

The Texas Instruments TPS65217CRSLR is a single-chip Power Management IC (PMIC) specifically designed for AM335x ARM Cortex-A8 processors. It integrates a linear battery charger, three 2.25 MHz buck converters, two LDOs, two load switches, and a WLED driver in a 48-pin VQFN package. Supporting USB and AC adapter inputs with 2 A power path current, it operates over -40°C to +105°C for industrial applications.

Key Specifications

Function PMIC for AM335x (Battery-Powered Systems)
Buck Converters 3× (DCDC1, DCDC2, DCDC3), 2.25 MHz
LDOs 2× adjustable (LDO1, LDO2)
Load Switches 2× (LDO3, LDO4), configurable as LDO
Battery Charger Linear, 700 mA max charge current
Power Path Current 2 A
Input Voltage USB / AC adapter, up to 20 V tolerant
WLED Driver 2 strings, up to 10 LEDs per string, 25 mA each
Interface I2C (address 0x24), password-protected registers
Package VQFN-48 (6×6 mm, 0.4 mm pitch)
Operating Temperature -40°C ~ +105°C
Buck Quiescent Current 15 µA typical per converter
Buck Output Accuracy ±2% in PWM mode

Features

  • Complete power solution for AM335x ARM Cortex-A8 processors
  • Linear battery charger supporting Li-Ion/Li-Polymer with 700 mA max charge current
  • Dual-input power path (USB + AC adapter) with 20 V input tolerance
  • Three high-efficiency 2.25 MHz buck converters with power-save mode at light loads
  • 100% duty cycle support for minimum voltage dropout
  • Two adjustable LDOs and two configurable load switches
  • WLED driver with internal PWM dimming and 38 V open-LED protection
  • Password-protected I2C register access for safety-critical configuration

Applications

  • BeagleBone and AM335x-based development boards
  • Industrial handheld and portable instruments
  • Battery-powered embedded systems and tablets
  • Smart home hubs and IoT gateways
  • Portable medical and healthcare devices

The TPS65217CRSLR from Texas Instruments 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 integrates a linear battery charger supporting single-cell Li-Ion and Li-Polymer batteries, a dual-input power path (USB and AC adapter) with 2 A output current capability, three high-efficiency 2.25 MHz step-down converters for core, memory, and I/O voltage rails, two adjustable LDO regulators, two configurable load switches (also usable as LDOs), and a WLED boost converter supporting two strings of up to 10 LEDs each with 25 mA per LED. The I2C interface (address 0x24) provides full register-level control with password-protected access for safety-critical settings. The device operates from -40°C to +105°C, making it suitable for industrial environments.

The TPS65217CRSLR manages power through a dual-input power path that can simultaneously accept USB (5 V) and AC adapter (5-20 V) inputs. The power path controller prioritizes the AC adapter when available and falls back to USB or battery power. The linear battery charger uses a constant-current/constant-voltage (CC/CV) algorithm with programmable charge current up to 700 mA, thermal regulation, and safety timers. The three buck converters operate at 2.25 MHz fixed frequency in PWM mode for optimal efficiency at moderate-to-heavy loads, and automatically switch to PFM (power-save) mode at light loads to maintain high efficiency. Each buck converter can achieve 100% duty cycle for minimum dropout operation. The WLED driver uses a boost converter to generate sufficient voltage for up to 20 series-connected LEDs, with an internal PWM generator for brightness control. Protection features include undervoltage lockout (UVLO), battery fault comparator, always-on pushbutton monitor, and hardware reset. The I2C interface with Level 1 and Level 2 password protection prevents accidental register modification.

Pin Group Name Type Function
1-6 AC, USB, BAT, SYS Power AC adapter input, USB input, battery, system output
7-14 DCDC1 SW/FB Power Buck converter 1 switch node and feedback
15-22 DCDC2 SW/FB Power Buck converter 2 switch node and feedback
23-30 DCDC3 SW/FB Power Buck converter 3 switch node and feedback
31-34 LDO1-LDO2 Power LDO output and feedback pins
35-38 LDO3-LDO4 Power Load switch / LDO outputs
39-42 WLED Power WLED boost output and current sink pins
43-44 SCL, SDA I2C I2C serial clock and data
45-46 nWAKEUP, nRESET Digital Pushbutton wakeup input, hardware reset output
47-48 VDD, GND Power Digital supply and ground
  • BeagleBone platforms: Complete power solution for BeagleBone Black and AM335x-based SBCs
  • Industrial handhelds: Battery-powered portable instruments requiring multi-rail power and USB charging
  • Smart home gateways: Always-on IoT hub with battery backup and WLED status indicators
  • Portable medical devices: Multi-rail power for ARM-based patient monitoring with Li-Ion battery management
  • Embedded tablets: Battery-powered Linux/Android devices based on AM335x with display backlight
Manufacturer Part Number Package Notes
TI TPS65217ARSLR VQFN-48 Version A, no battery charger, lower cost
TI TPS65217BRSLR VQFN-48 Version B, same as C but different default voltages
TI TPS65217DRSLR VQFN-48 Version D, different default voltage settings
TI TPS65218B0RSLR VQFN-48 PMIC for AM437x, newer generation
TI TPS65916x NFBGA-100 PMIC for DRA7x/Sitara, more rails
NXP PF8100 BGA-84 PMIC for i.MX8, alternative platform
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All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Shipping & Payment

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Service & Packaging

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

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