Texas Instruments TPS65072RSLT

Overview

TPS65072RSLT from Texas Instruments is a highly integrated power management IC (PMIC) for portable systems with single-cell Li-Ion/Li-Polymer batteries. It integrates a 2-A power path manager, linear battery charger (1.5-A max), three 2.25-MHz step-down converters (DCDC1/2/3), two LDOs (VLDO1/VLDO2), a white LED boost driver, I²C interface, 10-bit ADC, and touch screen controller support. It powers OMAP-L1x8, Atlas IV, and similar low-power processors in handheld navigation devices.

For engineers reviewing the TPS65072RSLT datasheet, TPS65072RSLT pinout, TPS65072RSLT application, or TPS65072RSLT equivalent, key selection considerations include its fixed DCDC1/DCDC2 output voltages (1.2 V / 1.4 V), 600-mA per-buck current rating, absence of integrated touch screen controller (unlike TPS65070/TPS65073 variants), and EN_wLED enable pin for external wLED driver control.

Technical Context

The TPS65072RSLT implements a dedicated power path architecture that prioritizes system supply (SYS) from AC or USB inputs while simultaneously charging the battery, with thermal regulation and safety timers. Its three buck converters operate at fixed 2.25 MHz with PFM/PWM mode auto-transition and 100% duty-cycle capability for ultra-low dropout operation.

It features dual 200-mA LDOs with fixed outputs (1.2 V / 1.2 V), dynamic voltage scaling on VLDO2, and a programmable wLED boost converter supporting up to two LED strings with internal 25-mA current sinks. The device uses an I²C interface (SCLK/SDAT pins) for register configuration and monitoring, and includes an EN_wLED input pin - unique to the TPS65072 variant - to externally enable the LED driver independently of software control.

Key Specifications

Pinout & Package

The TPS65072RSLT is housed in a 48-pin VQFN package (6.0 mm × 6.0 mm, 0.4 mm pitch) with exposed thermal pad for enhanced thermal performance. Pin count and layout are identical across the TPS6507x family, ensuring PCB compatibility within the series.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar power management IC applications.

Compared with TPS65070RSLT and TPS65073RSLT, the TPS65072RSLT omits touch screen controller pins and uses a 20-ms reset delay, making it suitable for non-touch Atlas IV systems where hardware wLED control and minimal feature set reduce cost and complexity.

Availability

TPS65072RSLT is available at Aetrix Electronics and suitable for handheld navigation devices, industrial terminals, OMAP-L1x8 embedded systems, and portable medical loggers requiring stable component supply and long-term production support.

Supply support for TPS65072RSLT 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 company headquartered in Dallas, Texas, specializing in analog, embedded processing, and power management technologies for industrial, automotive, and consumer markets.

The TPS6507x product line was designed specifically for battery-powered portable electronics requiring highly integrated, space-constrained power solutions with intelligent charge management and multi-rail DC-DC conversion.

FAQ

What is the maximum battery charge current supported by the TPS65072RSLT?

The TPS65072RSLT supports a maximum linear battery charge current of 1.5 A. This is set via the ISET resistor connected between the ISET pin and GND, and is thermally regulated to prevent overheating during charging. The TPS65072RSLT does not support higher charge rates or switch-mode charging - it relies solely on linear regulation with built-in safety timers and temperature monitoring via the TS pin.

Does the TPS65072RSLT include a touch screen controller?

No, the TPS65072RSLT does not include a touch screen controller. Unlike the TPS65070RSLT and TPS65073RSLT variants, the TPS65072RSLT omits the AD_IN1–AD_IN4 (TSX1/TSX2/TSY1/TSY2) pins and associated internal circuitry. This makes the TPS65072RSLT suitable for non-touch applications such as Atlas IV-based industrial terminals where touch functionality is unnecessary.

What are the fixed output voltages of the DCDC converters in the TPS65072RSLT?

The TPS65072RSLT has fixed DCDC output voltages of 1.2 V for DCDC1 (core), 1.4 V for DCDC2 (peripheral), and 3.3 V for DCDC3 (I/O). These values are factory-programmed and cannot be adjusted via external resistors or I²C - they are optimized for Atlas IV processor families. The DEFDCDC2 and DEFDCDC3 pins are unused in this variant, confirming the fixed-voltage configuration.

How does the EN_wLED pin function on the TPS65072RSLT?

The EN_wLED pin on the TPS65072RSLT is an active-high hardware enable input for the white LED boost converter. When driven HIGH, it activates the wLED driver regardless of the ENABLE ISINK bit setting in the WLED_CTRL0 register. This allows direct microcontroller control of backlight power without relying on I²C communication, enabling faster response and fail-safe dimming behavior in the TPS65072RSLT.

What package type and thermal characteristics does the TPS65072RSLT use?

The TPS65072RSLT uses a 48-pin VQFN package (RSL) measuring 6.0 mm × 6.0 mm with 0.4-mm pitch and an exposed thermal pad. Its junction-to-board thermal resistance (RθJB) is 5.3 °C/W, and junction-to-ambient (RθJA) is 30 °C/W under standard JEDEC test conditions. The thermal pad must be soldered to a solid GND plane for optimal heat dissipation and reliability in continuous 2-A SYS load operation.