Texas Instruments TPS728175295YZUT

Overview

TPS728175295YZUT from Texas Instruments is a 200mA ultra-low-dropout linear regulator with pin-selectable dual-output voltages (1.75V and 2.95V), 3% DC accuracy over load/line/temperature, 230mV typical dropout at 200mA, and 50μA quiescent current - designed for dynamic voltage scaling in nanometric processors and low-power handheld devices.

For engineers reviewing the TPS728175295YZUT datasheet, TPS728175295YZUT pinout, TPS728175295YZUT application, or TPS728175295YZUT equivalent, key selection criteria include dual-voltage toggle timing (<40μs), WCSP-5 thermal performance (R_θJA = 268°C/W), 1.0μF ceramic output capacitor stability, and EEPROM-programmed factory-set VOUT pairs without external resistors.

Technical Context

The TPS728175295YZUT implements a PMOS pass transistor architecture with integrated EEPROM-programmed dual-voltage reference, enabling VSET pin toggling between two factory-defined outputs (1.75V and 2.95V). Its low-noise bandgap and error amplifier deliver 3% total DC accuracy across –40°C to +125°C junction temperature.

It features active pulldown during shutdown, undervoltage lockout (UVLO) with 2.51V turn-on threshold and 230mV hysteresis, thermal shutdown at +160°C (reset at +140°C), and internal current limiting (240–575mA). Stability is guaranteed with ≥1.0μF X5R/X7R ceramic output capacitance and no minimum load requirement.

Key Specifications

Pinout & Package

TPS728175295YZUT uses a 5-pin wafer-level chip-scale package (WCSP-5, YZU), 1.2mm × 0.8mm, 0.4mm pitch, with solder bumps on bottom side. Thermal performance relies on PCB copper area under the die; no exposed thermal pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS728175295YZUT, the DRVR variant offers superior thermal management in larger packages, while the YZUT 1.80V/2.85V alternative provides identical form-factor compatibility with shifted voltage targets - neither is pin-to-pin interchangeable without layout revision.

Availability

TPS728175295YZUT is available at Aetrix Electronics and suitable for wireless handsets, IoT sensor nodes, and portable medical devices requiring stable component supply with RoHS-compliant, lead-free packaging and full traceability.

Supply support for TPS728175295YZUT 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 connectivity technologies, with decades of expertise in precision power management ICs.

The TPS728xx series was developed specifically for dynamic voltage scaling and EEPROM programming in nanoscale processors, targeting ultra-small footprint, dual-rail flexibility, and sub-100μA quiescent current in handheld and wearable electronics.

FAQ

What are the exact factory-programmed output voltages for TPS728175295YZUT?

The TPS728175295YZUT is factory-programmed with two precise output voltages: 1.75V (VOUT1, selected when VSET ≤ 0.4V) and 2.95V (VOUT2, selected when VSET ≥ 1.2V). These values are stored in on-chip EEPROM and are not user-adjustable. Both outputs maintain ±3% DC accuracy across –40°C to +125°C junction temperature, load (0–200mA), and line (VIN = VOUT + 0.5V to 6.5V).

Can TPS728175295YZUT operate with zero output load?

Yes, TPS728175295YZUT is fully stable and specified down to 0mA output current. Its innovative low-current mode circuitry maintains loop stability and tight regulation even with no load, eliminating the need for minimum load resistors. This capability is critical for applications like sensor wake-up circuits or standby power rails where current draw drops to nanoamps between events.

What is the recommended output capacitor for TPS728175295YZUT?

A 1.0μF X5R or X7R ceramic capacitor is required from OUT to GND for guaranteed stability and optimal PSRR/noise performance. The capacitor must have ESR < 1.0Ω and be placed as close as possible to the device pins. Larger values (e.g., 2.2μF) reduce transient overshoot magnitude but increase settling time; avoid high-ESR types like tantalum, which degrade PSRR.

How does the VSET pin toggle between output voltages in TPS728175295YZUT?

The VSET pin toggles TPS728175295YZUT between 1.75V and 2.95V outputs using standard CMOS logic levels: driving VSET ≤ 0.4V selects 1.75V; driving VSET ≥ 1.2V selects 2.95V. Transition time is <40μs (2% settling) under 1–10mA load. No external pull-up/down resistors are needed - the internal logic interprets the voltage level directly.

Does TPS728175295YZUT include thermal protection?

Yes, TPS728175295YZUT integrates thermal shutdown that disables the output when junction temperature reaches +160°C and re-enables it after cooling to +140°C. This hysteresis prevents oscillation during overload. For reliable operation, design must limit steady-state junction temperature to ≤+125°C using appropriate PCB copper area, as the YZU package has R_θJA = 268°C/W on JEDEC high-K board.