Texas Instruments TPS72728YFFT

Overview

TPS72728YFFT from Texas Instruments is a 250-mA, ultralow-I_Q (7.9 μA), fast-transient-response LDO linear regulator delivering a fixed 2.8 V output with 2% accuracy over load, line, and temperature (–40°C to +125°C). It features 65 mV typical dropout at 100 mA, 70 dB PSRR at 1 kHz, and stable operation with only a 1.0-μF ceramic output capacitor - ideal for powering RF-sensitive core logic in compact portable devices.

For engineers reviewing the TPS72728YFFT datasheet, TPS72728YFFT pinout, TPS72728YFFT application, or TPS72728YFFT equivalent, key selection criteria include its DSBGA-4 (1.2 mm × 0.8 mm) wafer-level package, ground-pin current behavior across temperature, load transient response (±50 mV for 200 mA step), and compatibility with low-noise, battery-powered signal chains requiring minimal quiescent power.

Technical Context

The TPS72728YFFT employs a PMOS pass transistor architecture enabling ultralow dropout voltage that scales with output current (65 mV @ 100 mA, 130 mV @ 200 mA). Its internal factory-programmed EEPROM sets the precise 2.8 V output without external resistors.

It integrates active enable control (EN high-threshold = 0.9 V), thermal shutdown (~160°C trip), overcurrent protection (typ. 400 mA limit), and undervoltage lockout (UVLO = 1.90 V nominal), all operating across –40°C to +125°C junction temperature range with no external components required for basic functionality.

Key Specifications

Pinout & Package

TPS72728YFFT is housed in a 4-ball, 0.4-mm pitch DSBGA (YFF) package measuring 1.20 mm × 0.80 mm - optimized for space-constrained handheld PCBs. Ball A1 is marked with a top-side dot for 2.8 V variants.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS72728DSET, the TPS72728YFFT offers superior thermal resistance (160 vs. 190.5°C/W) in half the footprint, while the MCP1700T-2802E/MB trades critical protection features and transient performance for marginally lower quiescent current - making TPS72728YFFT the balanced choice for robust, miniaturized RF systems.

Availability

TPS72728YFFT is available at Aetrix Electronics and suitable for wireless handsets, Bluetooth® audio devices, and Zigbee® sensor nodes requiring stable component supply, long-term lifecycle support, and traceable wafer-lot sourcing.

Supply support for TPS72728YFFT 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 designing analog ICs, embedded processors, and system solutions for industrial, automotive, and personal electronics markets.

The TPS727 family was engineered specifically for ultra-low-power, space-constrained portable applications - emphasizing sub-10 μA quiescent current, fast transient response, and wafer-level packaging without sacrificing protection or accuracy.

FAQ

What is the maximum input voltage rating for the TPS72728YFFT?

The TPS72728YFFT has an absolute maximum input voltage (VIN) rating of +6.0 V. However, the recommended operating range is 2.0 V to 5.5 V. Exceeding 6.0 V risks permanent damage, and operation below 2.0 V may trigger undervoltage lockout (UVLO) or prevent regulation. For reliable 2.8 V output, VIN must remain ≥ VOUT + dropout (≥2.865 V at 100 mA load).

Does the TPS72728YFFT require an input capacitor for stability?

The TPS72728YFFT does not require an input capacitor for basic stability, but TI strongly recommends a 0.1-μF to 1.0-μF ceramic capacitor from IN to GND. This improves transient response, reduces ripple coupling from upstream sources, and mitigates noise from high-impedance or long-trace power feeds - especially critical in RF-sensitive applications where the TPS72728YFFT is commonly deployed.

How does the enable (EN) pin function on the TPS72728YFFT?

The EN pin on the TPS72728YFFT is active-high with a threshold of 0.9 V (min) for turn-on and 0.4 V (max) for shutdown. When EN ≥ 0.9 V, the regulator delivers 2.8 V to OUT; when EN ≤ 0.4 V, it enters shutdown mode drawing only 120 nA (typical) ground current. The pin accepts standard CMOS/TTL logic levels and draws ≤500 nA, making it compatible with low-power microcontrollers without additional level-shifting.

Can the TPS72728YFFT operate with a 1.0-μF output capacitor, and what type is recommended?

Yes, the TPS72728YFFT is explicitly designed to be stable with a 1.0-μF ceramic output capacitor - no larger value or specific ESR is required. X5R or X7R dielectrics are recommended due to their stable capacitance and low ESR over temperature. Avoid Z5U or Y5V types, which exhibit significant capacitance loss and ESR rise at temperature extremes, potentially degrading transient response or stability.

What thermal protection behavior does the TPS72728YFFT exhibit under overload conditions?

The TPS72728YFFT activates thermal shutdown at approximately +160°C junction temperature, disabling the output until the die cools to ~+140°C, at which point regulation resumes. Under sustained overload, this causes auto-cycling - a protective mechanism preventing permanent damage. However, continuous cycling indicates inadequate PCB copper area or excessive power dissipation; design must ensure worst-case junction temperature stays ≤+125°C for reliable long-term operation.