Texas Instruments TPS65132L0YFFT

Overview

TPS65132L0YFFT from Texas Instruments is a single-inductor, dual-output power supply IC designed for bipolar LCD display bias rails. It delivers programmable +5.0 V / –5.0 V outputs at up to 40 mA per rail, operates from 2.5 V to 5.5 V input (e.g., single-cell Li-ion), and integrates I²C interface for voltage sequencing and active discharge control - deployed in smartphones and wearables.

For engineers reviewing the TPS65132L0YFFT datasheet, TPS65132L0YFFT pinout, TPS65132L0YFFT application, or TPS65132L0YFFT equivalent, key selection criteria include its pre-programmed ±5.0 V outputs, 15-ball DSBGA package, I²C-configurable power-up/down sequencing, 1% output accuracy over –40°C to +85°C, and support for split-rail analog circuitry requiring low-noise, tightly regulated dual supplies.

Technical Context

The TPS65132L0YFFT uses a synchronous boost converter (1.35–2.25 MHz) to generate an intermediate REG voltage, which feeds both an integrated LDO (for VPOS) and a negative charge pump (for VNEG). Its single-inductor architecture minimizes solution size while enabling independent 40 mA current capability on each rail with 100% asymmetry support.

I²C interface enables real-time configuration of power-up/down sequencing, output voltage selection (though TPS65132L0 is factory-set to ±5.0 V), active discharge behavior, and soft-start timing. Undervoltage lockout (2.3–2.5 V threshold) and thermal shutdown (140°C) ensure robust operation under battery sag or overload conditions.

Key Specifications

Pinout & Package

TPS65132L0YFFT is housed in a 15-ball DSBGA (YFF) package with 0.4-mm pitch, optimized for minimal board area and low thermal resistance (R_θJA = 76.5°C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-output bias supply applications.

Compared with TPS65132L0YFFT, TPS65132A0YFFT offers faster wake-up at the cost of higher shutdown current, while TPS65132B2YFFT provides higher output voltage and longer soft-start - making TPS65132L0YFFT the optimal choice for standard ±5.0 V LCD bias where ultra-low quiescent current and balanced timing are required.

Availability

TPS65132L0YFFT is available at Aetrix Electronics and suitable for smartphone displays, wearable electronics, differential audio systems, and precision instrumentation requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for TPS65132L0YFFT 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 and space-constrained applications.

The TPS65132 family was developed specifically for compact, high-efficiency dual-rail power in portable displays - integrating boost, LDO, and charge pump functions into a single chip to replace multi-component solutions in smartphones, tablets, and wearables.

FAQ

What output voltages does the TPS65132L0YFFT deliver?

The TPS65132L0YFFT is factory-programmed to deliver +5.0 V on the VPOS rail and –5.0 V on the VNEG rail, with ±1% accuracy over –40°C to +85°C. These values are fixed and cannot be altered via I²C; alternative variants like TPS65132B2YFFT offer ±5.2 V, while TPS65132T6YFFT provides ±5.6 V.

Does the TPS65132L0YFFT support I²C configuration despite being pre-programmed?

Yes, the TPS65132L0YFFT retains full I²C functionality for configuring power-up/down sequencing order, enabling/disabling active discharge on VPOS and VNEG, setting soft-start timing, and reading status registers - even though its ±5.0 V outputs are fixed at factory. This enables flexible system-level power management without changing hardware.

What is the maximum supported output current for each rail of the TPS65132L0YFFT?

The TPS65132L0YFFT supports up to 40 mA on both the VPOS (+5.0 V) and VNEG (–5.0 V) rails simultaneously. It does not support the 80 mA or 150 mA modes found in other variants like TPS65132T6YFFT or TPS65132SYFFT - those require different part numbers and distinct internal current-limit settings.

Which external components are mandatory for stable operation of the TPS65132L0YFFT?

Mandatory external components for the TPS65132L0YFFT include: one 4.7 µF input capacitor (X7R), two 4.7 µF output capacitors (one each on OUTP and OUTN), one 2.2 µF flying capacitor (CFLY1/CFLY2), and one 4.7 µH inductor on the SW–REG path. Omitting any of these compromises regulation accuracy, efficiency, or EMI performance.

How does the TPS65132L0YFFT handle power sequencing between VPOS and VNEG rails?

The TPS65132L0YFFT uses separate enable pins (ENP for VPOS, ENN for VNEG) and I²C-controlled sequencing registers to implement programmable startup and shutdown order. For example, setting ENN HIGH before ENP ensures VNEG powers up first - preventing reverse biasing of display panel diodes and avoiding latch-up in source/gate driver ICs.