Texas Instruments TPS767D325PWP

Overview

TPS767D325PWP from Texas Instruments is a dual-output low-dropout (LDO) voltage regulator delivering fixed 3.3V and 2.5V outputs, each supporting up to 1.0A load current. It features ultra-low 85µA typical quiescent current, 350mV typical dropout at 1A per channel, dual open-drain RESET outputs with 200ms delay, and thermal shutdown protection - designed for DSP, split-supply microprocessor, and mixed-voltage embedded systems.

For engineers reviewing the TPS767D325PWP datasheet, TPS767D325PWP pinout, TPS767D325PWP application, or TPS767D325PWP equivalent, key selection criteria include dual-rail output stability under fast transients, independent enable/reset control per channel, PMOS pass architecture enabling load-independent quiescent current, and compatibility with 10µF low-ESR ceramic output capacitors.

Technical Context

The TPS767D325PWP integrates two independent PMOS-based LDO regulators in a single 28-pin HTSSOP package. Each channel uses voltage-driven pass elements, eliminating base-current dependency and ensuring constant 85µA quiescent current across 0–1A output loading. Dropout voltage scales linearly with load (350mV typ. at 1A), and internal comparators monitor both outputs for undervoltage detection.

Each regulator includes dedicated EN and RESET pins, enabling separate power sequencing and fault isolation. The RESET function triggers at 92–98% of nominal output voltage with 0.5% hysteresis and provides 200ms timeout delay. Thermal shutdown activates at 150°C, and current limiting caps per-channel output at 1.7A.

Key Specifications

Pinout & Package

TPS767D325PWP is housed in a 28-pin HTSSOP (PWP) package with exposed thermal pad (PowerPAD™). Pin numbering follows standard top-view layout; pins marked "NC" have no internal connection.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-output LDO regulator applications.

Compared with TPS767D318PWP, the TPS767D325PWP delivers 2.5V instead of 1.8V on Regulator 1 - making it optimal for legacy DSPs and microcontrollers with 2.5V core requirements. Versus TPS7A8300RGWR, it provides true dual-rail integration in one package, reducing component count and layout complexity despite slightly higher dropout.

Availability

TPS767D325PWP is available at Aetrix Electronics and suitable for DSP power management, industrial PLCs, automotive infotainment modules, and medical imaging systems requiring stable dual-rail component supply with long-term lifecycle assurance.

Supply support for TPS767D325PWP 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 ICs, with decades of expertise in high-reliability power regulation solutions.

The TPS767D3xx family was engineered specifically for DSP and multi-voltage embedded applications, emphasizing low dropout, ultra-low quiescent current, and independent dual-rail control to replace discrete regulator solutions.

FAQ

What output voltages does the TPS767D325PWP provide?

The TPS767D325PWP provides fixed 2.5V on Regulator 1 (pins 23–24) and 3.3V on Regulator 2 (pins 17–18), each with ±2% tolerance over line, load, and temperature (–40°C to +125°C). These values are factory-trimmed and require no external feedback components - unlike adjustable variants such as the TPS767D301.

Does the TPS767D325PWP require an input capacitor?

The TPS767D325PWP does not require an input capacitor for stability, but Texas Instruments recommends a 0.047µF–0.1µF ceramic bypass capacitor near the device if located more than a few inches from the power source. This improves high-frequency noise rejection and load transient response - particularly important in noisy automotive or industrial environments where the TPS767D325PWP is commonly deployed.

How does the RESET function operate on the TPS767D325PWP?

The TPS767D325PWP features two independent open-drain RESET outputs (pins 22 and 28), each asserting low when its respective output falls below 92–98% of nominal voltage. Each includes a 200ms timeout delay and 0.5% hysteresis. External pullup resistors are required; unused RESET pins may be left floating. This dual-reset capability allows separate reset signaling for core logic (2.5V rail) and I/O peripherals (3.3V rail).

What thermal protection does the TPS767D325PWP include?

The TPS767D325PWP incorporates per-channel thermal shutdown that disables regulation when junction temperature exceeds 150°C (typical). Once the die cools below ~130°C, normal operation resumes automatically. This protection works alongside per-channel current limiting (~1.7A) to prevent damage during sustained overload or inadequate heatsinking - critical for reliability in sealed industrial enclosures where the TPS767D325PWP is often used.

Can the TPS767D325PWP operate without a minimum load?

Yes, the TPS767D325PWP is stable at zero load and requires no minimum output current for regulation. This eliminates the need for dummy loads or bleeder resistors - simplifying designs for battery-powered or low-power sleep-mode applications where the TPS767D325PWP's 1µA shutdown current and 85µA operating IQ deliver maximum energy efficiency.