Texas Instruments TPS65651RTER

Overview

TPS65651RTER from Texas Instruments is a triple-output AMOLED display power supply IC integrating synchronous boost (AVDD), synchronous inverting buck-boost (ELVSS), and boost (ELVDD) converters. It delivers 6.1 V / 80 mA (AVDD), 4.6 V / 300 mA (ELVDD), and ±2.5 V / 300 mA (ELVSS) from a 2.9–4.5 V input, supporting compact smartphones and ≤8" active-matrix OLED displays.

For engineers reviewing the TPS65651RTER datasheet, TPS65651RTER pinout, TPS65651RTER application, or TPS65651RTER equivalent, key selection criteria include programmable output voltages via single-wire digital interface, ±30 mV accuracy at ELVSS, VI-to-VO isolation, thermal shutdown, and short-circuit protection across all rails.

Technical Context

The TPS65651RTER implements three independent regulated outputs using synchronous switching topologies: AVDD uses a boost converter with 1% output accuracy and 6.1 V default; ELVDD uses a boost converter with 0.5% accuracy and 4.6 V default; ELVSS uses an inverting buck-boost converter with ±30 mV accuracy at –2.5 V and programmable range from –5.4 V to –1.4 V.

Control is managed through a single-wire digital interface (CTRL pin), enabling discrete-step programming of all three output voltages without external I²C or SPI. The device features dedicated enable pins (EN3), discharge control, external sensing (SNS1), and PGND/GND separation for noise-sensitive analog timing paths in OLED pixel drivers.

Key Specifications

Pinout & Package

TPS65651RTER is housed in a thermally enhanced 16-pin WQFN package (RTE) with 0.4 mm pitch, exposed thermal pad, and wettable flanks for automated optical inspection. Pin numbering follows TI standard QFN layout with pin 1 marked by dot.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar AMOLED display power supply applications.

Compared with TPS65651RTER, TPS65653RTER offers identical form factor and reduced feature set for cost-sensitive designs, while MAX17135ETL+ adds gate-driver rails and I²C flexibility at the expense of size and interface compatibility-making TPS65651RTER optimal for compact, software-programmable mobile OLED systems.

Availability

TPS65651RTER is available at Aetrix Electronics and suitable for smartphones, small-size tablets, and active matrix OLED displays ≤8" requiring stable component supply, consistent parametric performance, and long-term lifecycle support.

Supply support for TPS65651RTER 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 with over 90 years of innovation history.

The TPS6565x product line was designed specifically for energy-efficient, space-constrained AMOLED display power delivery in mobile consumer devices-emphasizing integration, programmability, and output accuracy under dynamic load conditions.

FAQ

What is the input voltage range supported by the TPS65651RTER?

The TPS65651RTER supports an input voltage range of 2.9 V to 4.5 V, optimized for single-cell lithium-ion or lithium-polymer batteries. This range accommodates full battery discharge curves while maintaining regulation across all three outputs-AVDD, ELVDD, and ELVSS-without dropout or brownout. The TPS65651RTER maintains specified accuracy and transient response throughout this range, as validated in TI's SLVSD67 datasheet efficiency plots and load regulation tests.

Does the TPS65651RTER support programmable output voltages for all three rails?

Yes, the TPS65651RTER supports digital programming of all three outputs-AVDD (5.8–7.9 V), ELVDD (4.6–5.0 V), and ELVSS (–5.4 to –1.4 V)-via its single-wire CTRL interface. Each rail can be adjusted in discrete steps with guaranteed accuracy: ±1% for AVDD, ±0.5% for ELVDD, and ±30 mV for ELVSS at –2.5 V. This programmability is implemented entirely within the TPS65651RTER silicon and does not require external DACs or resistor networks.

What is the purpose of the SNS1 pin on the TPS65651RTER?

On the TPS65651RTER, the SNS1 pin provides remote voltage sensing for the ELVDD output, enabling load-drop compensation to maintain regulation accuracy at the point of load. When connected to the ELVDD rail downstream of PCB trace resistance, SNS1 feeds back the true load voltage to the error amplifier-correcting for up to 150 mV of IR drop at full 300 mA current. This function is unique to the TPS65651RTER among its family and is documented in the "ELVDD Feedback and Compensation" section of the SLVSD67 datasheet.

How does the TPS65651RTER handle fault conditions such as overcurrent or thermal overload?

The TPS65651RTER integrates short-circuit protection on all three outputs and thermal shutdown with automatic recovery. During overcurrent, the affected regulator enters hiccup mode-cycling on/off until fault clears-while the FD pin asserts low to signal the host system. Thermal shutdown activates at junction temperatures exceeding 150°C, disabling all outputs until temperature falls below 135°C. These protections are inherent to the TPS65651RTER design and do not require external components, as confirmed in the "Protection Features" table of the SLVSD67 datasheet.

Is the TPS65651RTER pin-compatible with other devices in the TPS6565x family?

The TPS65651RTER shares the same 16-pin WQFN (RTE) package and pinout with TPS65653RTER, making them mechanically and electrically interchangeable on PCBs. However, functional differences exist: TPS65653RTER fixes ELVSS at –2.5 V and omits the SNS1 pin and programmability for that rail. Therefore, while the TPS65651RTER can replace TPS65653RTER in most layouts, the reverse is not recommended unless ELVSS programmability and remote sensing are disabled in firmware.