Texas Instruments TPS65011RGZR

Overview

TPS65011RGZR from Texas Instruments is a highly integrated power and battery management IC for single-cell Li-Ion/Li-Polymer systems, featuring a linear charger (100–1000 mA), dual step-down converters (1-A VMAIN @ 95%, 400-mA VCORE @ 90%), two 200-mA LDOs, I²C interface, thermal shutdown, and deep-sleep LOW_PWR control - deployed in smartphones and PDAs.

For engineers reviewing the TPS65011RGZR datasheet, TPS65011RGZR pinout, TPS65011RGZR application, or TPS65011RGZR equivalent, key selection criteria include autonomous AC/USB input selection, programmable charge current via ISET resistor, dual fixed-output DC-DC converters with 1.25-MHz switching, serial register-based configuration, and thermal fault handling with PWRFAIL signaling.

Technical Context

The TPS65011RGZR integrates a linear charger with precharge, constant-current/constant-voltage regulation, and termination detection using an external ISET resistor and internal voltage references (V(SET_TERM) = 11–25 mV). It supports dual independent 1.25-MHz synchronous buck converters: VMAIN delivers up to 1 A at 1.8/3.3 V (selectable via DEFMAIN), VCORE delivers up to 400 mA at 0.85–1.8 V (selectable via DEFCORE), both entering PFM mode at light load.

Two 200-mA LDOs (VLDO1/VLDO2) are enabled via I²C and accept 1.8–6.5 V input; VLDO2 output is fixed at 1.8–3.3 V, while VLDO1 is adjustable via external feedback divider. The device uses a 400-kHz/100-kHz I²C-compatible serial interface with open-drain GPIOs (GPIO1–GPIO4), dedicated reset outputs (MPU_RESET, RESPWRON), and battery-cover sensing (BATT_COVER) with 2.4-ms de-glitching.

Key Specifications

Pinout & Package

TPS65011RGZR is housed in a 48-pin VQFN package (7.0 mm × 7.0 mm) with exposed thermal pad connected to PGND. Pin functions are validated per TI SLVS501B datasheet Rev. September 2015.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS65011RGZR, TPS65023RGZR adds a third power rail and tighter USB compliance but increases complexity and cost, while BQ24032ARHLR offloads regulation entirely - making TPS65011RGZR optimal for balanced integration in mid-tier portable devices.

Availability

TPS65011RGZR is available at Aetrix Electronics and suitable for smartphone, PDA, digital still camera, and internet audio player designs requiring stable component supply, long-term lifecycle support, and automotive-grade reliability validation.

Supply support for TPS65011RGZR 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 battery-powered portable systems.

The TPS65011RGZR belongs to TI's Power Management IC portfolio designed specifically for single-cell Li-Ion/Li-Polymer applications in space-constrained consumer electronics requiring high integration, low quiescent current, and robust fault protection.

FAQ

What is the maximum supported charge current for TPS65011RGZR?

The TPS65011RGZR supports up to 1000 mA from an AC adapter (4.5–5.5 V) and up to 500 mA from USB (4.35–5.25 V), with current set by an external ISET resistor and optionally scaled via I²C CHGCONFIG register bits. The actual delivered current depends on thermal conditions and input voltage headroom - for example, 1000 mA requires ≥4.5 V on AC and adequate PCB copper for thermal dissipation.

How does the TPS65011RGZR handle power-source arbitration between AC and USB inputs?

The TPS65011RGZR performs autonomous hardware-based arbitration: it prioritizes AC over USB when both are present, asserts PG when either source is valid, and seamlessly transitions charging current without MCU involvement. Input detection is based on voltage thresholds (V(AC) ≥ 4.5 V, V(USB) ≥ 4.35 V), and the charger automatically selects the highest-priority valid source.

Can the VCORE output voltage of TPS65011RGZR be dynamically adjusted during operation?

Yes - the TPS65011RGZR supports five VCORE output voltages (0.85 V, 1.0 V, 1.1 V, 1.2 V, 1.3 V, 1.4 V, 1.5 V, 1.8 V) selected via the DEFCORE pin at startup, and further dynamic adjustment is possible via I²C register writes to the VCORE_VOLTAGE register, enabling real-time core voltage scaling for performance/power trade-offs in the TPS65011RGZR.

What is the role of the LOW_PWR pin on the TPS65011RGZR?

The LOW_PWR pin on the TPS65011RGZR is an active-high input that triggers deep-sleep mode: when asserted, it lowers VCORE to a predefined value (e.g., 0.85 V) or disables it entirely, reducing system power consumption. This signal is typically driven by the host processor's power-management unit and works in conjunction with the TPS65011RGZR's internal sequencing logic to maintain safe state retention.

Does the TPS65011RGZR include built-in battery temperature monitoring?

Yes - the TPS65011RGZR includes a dedicated TS pin that connects to an NTC thermistor in series with a 102-µA internal current source. The resulting voltage is compared against internal thresholds (V(LTF) = 2.475–2.525 V for cold, V(HTF) = 0.485–0.515 V for hot) to suspend charging outside safe temperature ranges. De-glitching (8.8–60 ms) prevents false trips from transient noise on the TPS65011RGZR TS line.