Texas Instruments TPS652170RSLR

Overview

TPS652170 from Texas Instruments is a programmable power management IC (PMIC) designed for battery-powered and 5-V line-powered systems, delivering three 1.2-A step-down converters (DCDC1–DCDC3), two adjustable LDOs (LDO1/LDO2), two configurable load switches (LS1/LS2), a WLED boost driver, and integrated linear battery charging with 2-A power path. It powers Sitara AM335x processors and supports DDR3/DDR3L memory rails including VTT and VREFCA.

For engineers reviewing the TPS652170 datasheet, TPS652170 pinout, TPS652170 application, or TPS652170 equivalent, key selection considerations include I²C-programmable output voltages (0.9–3.3 V), 2.25-MHz fixed-frequency buck operation with 15-µA quiescent current per converter, thermal regulation, password-protected registers, and 48-pin VQFN (6 mm × 6 mm) packaging optimized for portable navigation and industrial tablet designs.

Technical Context

The TPS652170 integrates a dual-input (USB/AC) power path with 2-A system supply capability, linear Li-ion charging up to 700 mA, and independent control of three buck converters-each with 100% duty-cycle operation, passive discharge, and ±2% PWM-mode output accuracy. Its I²C interface (address 0x24) enables full configuration of voltage levels, sequencing, protection thresholds, and WLED dimming parameters.

Functional blocks include an analog multiplexer for battery voltage, temperature, and charge current monitoring; hardware reset and push-button wake-up logic; and dedicated open-drain interrupt outputs (nINT, nWAKEUP) with maskable sources. All regulators support power-good signaling, and the device operates across –40°C to +105°C for industrial reliability.

Key Specifications

Pinout & Package

The TPS652170 is housed in a 48-pin leadless VQFN package (6.00 mm × 6.00 mm) with an exposed thermal pad connected to PGND. Pin functions are validated per TI SLVSF11 datasheet Rev. JUNE 2019, including dual power inputs (AC/USB), battery interface (BAT/BAT_SENSE), three buck switch nodes (L1/L2/L3), WLED boost switch (L4), I²C bus (SCL/SDA), and system control signals (PWR_EN/nRESET/nWAKEUP).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PMIC applications.

Compared with TPS65217C and TPS65217D, the TPS652170 balances full-feature integration (WLED, 700-mA charge, dual LDOs) with industrial temperature range and robust power-path protection-making it optimal for navigation and tablet designs where display backlighting and battery longevity are critical.

Availability

TPS652170 is available at Aetrix Electronics and suitable for Sitara AM335x processor power, portable navigation systems, and industrial tablet computing requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for TPS652170 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies, with decades of expertise in high-reliability power solutions for industrial and automotive markets.

The TPS652170 belongs to TI's Sitara-optimized PMIC product line, engineered specifically to simplify power architecture for ARM-based processors-reducing design complexity, improving thermal efficiency, and accelerating time-to-market for battery-backed portable and 5-V line-powered systems.

FAQ

What is the primary application target for the TPS652170?

The TPS652170 is primarily targeted at powering Texas Instruments' Sitara AM335x ARM Cortex-A8 processors in portable and 5-V line-powered applications. It delivers tightly regulated rails for VDD_CORE, DDR3/DDR3L memory (VDDS_DDR, VTT, VREFCA), analog peripherals (VDDA_ADC, VDDA3P3V_USB0), and display backlighting via its integrated WLED driver-making the TPS652170 ideal for navigation systems, industrial tablets, and embedded HMIs.

Does the TPS652170 support DDR3L memory voltage requirements?

Yes, the TPS652170 supports DDR3L memory voltage requirements through its configurable DCDC3 buck converter, which can be programmed via I²C or resistor divider to output 1.35 V (±2%) with up to 1.2 A continuous current. This meets JEDEC DDR3L specification for VDDQ/2 (1.35 V ±50 mV) and ensures stable operation across –40°C to +105°C ambient conditions.

How does the TPS652170 handle battery charging and power-path management?

The TPS652170 implements a dual-input power path with automatic source selection between USB, AC adapter, and single-cell Li-ion battery. It provides linear charging up to 700 mA with thermal regulation, safety timers, and battery voltage sensing via BAT_SENSE. Dynamic Power Path Management (DPPM) maintains system operation down to 3.5 V while simultaneously charging the battery-ensuring uninterrupted operation even during low-battery conditions.

Can the TPS652170's LDOs and load switches be reconfigured dynamically?

Yes, the TPS652170's LS1 and LS2 terminals can be configured in real time via I²C as either adjustable LDOs (1.5–3.3 V, 200/400 mA) or low-R_DS(on) load switches (1.8–5.8 V input). This flexibility allows dynamic rail partitioning-for example, using LS1 as a 3.3-V LDO for USB PHY and LS2 as a load switch for SD card power control-without hardware changes.

What thermal performance specifications apply to the TPS652170 in its VQFN package?

The TPS652170 in the RSL (48-pin VQFN) package has a junction-to-board thermal resistance (R_θJB) of 5.6 °C/W and junction-to-ambient (R_θJA) of 30.4 °C/W under standard JEDEC PCB conditions. Its thermal regulation circuitry activates at 111–123 °C to reduce charge current, and the exposed thermal pad must be soldered to a solid PGND plane to achieve rated performance across the full –40°C to +105°C operating range.