Texas Instruments TPS65810RTQT

Overview

TPS65810RTQT from Texas Instruments is a single-cell Li-ion battery and power management IC integrating charge management, nine LDOs (six adjustable, two fixed 3.3 V, one 1.5 V RTC backup), two 600-mA buck converters (SM1/SM2), one white LED driver (6-LED series), RGB LED controller, PWM outputs, 8-channel ADC, and I²C host interface - deployed in handheld devices requiring compact, thermally enhanced power sequencing.

For engineers reviewing the TPS65810RTQT datasheet, TPS65810RTQT pinout, TPS65810RTQT application, or TPS65810RTQT equivalent, this page delivers verified electrical specs (e.g., 600 mA SM1/SM2 output, 1.5-A max charge current, 4.2 V battery regulation), package mapping (QFN-56, 8 mm × 8 mm), validated pin functions (e.g., FB3 for LED current setting, DPPM for dynamic power path control), and real-world system roles including battery-to-system power-path arbitration and RGB brightness programming.

Technical Context

The TPS65810RTQT implements dual-input power-path arbitration between AC and USB sources with programmable input current limits (up to 2.75 A), thermal foldback, and DPPM-based battery protection. Its integrated 8-channel ADC supports single-conversion, peak-detection, and averaging modes for battery temperature (TS), system voltage (SYS_IN), and analog monitoring (ANLG1/ANLG2).

System sequencing is managed via POR with programmable masking, hardware/software reset (HOT_RST, RESPWRON), and sleep mode activation at V(SYS_IN) < 1 V. All nine LDOs and two buck converters are software-configurable over I²C, enabling dynamic voltage scaling and fault reporting through interrupt-driven status registers.

Key Specifications

Pinout & Package

TPS65810RTQT uses a thermally enhanced 56-pin QFN (RTQ) package with an exposed ground pad (Pin 57) that must be soldered to AGND1 on the PCB. The package measures 8.0 mm × 8.0 mm and supports reflow assembly per JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS65811RTQT, the TPS65810RTQT offers lower thermal stress in 600-mA buck applications and reduced BOM cost, while BQ24150ARHLT requires additional regulators and drivers to match its integrated functionality - making TPS65810RTQT optimal for space-sensitive, single-chip power architectures.

Availability

TPS65810RTQT is available at Aetrix Electronics and suitable for PDA power management, smartphone battery systems, MP3 player architectures, internet appliance system rail control, and handheld device designs requiring stable component supply across extended production lifecycles.

Supply support for TPS65810RTQT 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 specializing in analog and embedded processing technologies, with leadership in power management, signal chain, and microcontroller solutions.

The TPS65810RTQT belongs to TI's handheld power management IC product line, designed specifically to consolidate battery charging, multi-rail DC/DC conversion, LED driving, and system monitoring into a single QFN package for space- and thermal-constrained portable electronics.

FAQ

What is the maximum supported battery charge current for the TPS65810RTQT?

The TPS65810RTQT supports a maximum battery charge current of 1.5 A, configurable via the ISET1 resistor and I²C registers. This value is achieved under AC adapter input with appropriate thermal management; the device implements thermal foldback to reduce current if junction temperature exceeds safe limits, ensuring reliable operation during high-power charging cycles. The TPS65810RTQT datasheet specifies 1.5-A capability as an absolute maximum under recommended conditions.

Does the TPS65810RTQT support both AC adapter and USB input sources simultaneously?

No - the TPS65810RTQT implements automatic power-path arbitration and selects only one input source at a time: either AC or USB. It detects input presence via voltage differentials (e.g., V(AC)–V(BAT) > 190 mV), prioritizes AC when both are present, and switches seamlessly between sources with sub-100-μs transition times. Simultaneous sourcing is not supported; the device ensures no backfeeding between inputs.

How many LDO outputs does the TPS65810RTQT provide, and what are their voltage options?

The TPS65810RTQT provides nine LDO outputs: six adjustable (1.25 V to 3.3 V, programmed via I²C), two fixed 3.3 V outputs (LDO1 and LDO2), and one low-leakage 1.5 V RTC backup supply (RTC_OUT). LDO3, LDO4, and LDO5 are adjustable but share a common reference (LDO35_REF); LDO0 is fixed at 3.3 V. All LDOs require external decoupling capacitors per the datasheet layout guidelines.

Can the TPS65810RTQT operate without an external I²C host controller?

Yes - the TPS65810RTQT supports standalone operation using factory-default settings for all regulators, charge parameters, and GPIO configurations. In this mode, it performs autonomous battery charging, power-path selection, and system reset generation without host intervention. I²C is required only for customization (e.g., voltage tuning, fault masking, or RGB timing control), not basic functionality.

What thermal metrics apply to the TPS65810RTQT in its QFN-56 package?

The TPS65810RTQT in the RTQ (QFN-56) package has a junction-to-ambient thermal resistance (RθJA) of 26.9°C/W, junction-to-board (RθJB) of 4.9°C/W, and junction-to-case (bottom) resistance (RθJC(bot)) of 0.7°C/W. These values assume proper PCB layout with the exposed thermal pad soldered to a solid AGND1 plane. The low RθJB confirms effective heat transfer to the board, critical for maintaining <125°C junction temperature under 600-mA buck loading.