Texas Instruments TPS79015DBVR

Overview

TPS79015DBVR from Texas Instruments is a 1.5-V, 50-mA ultra-low-power, low-noise LDO voltage regulator in a 5-pin SOT-23 (DBV) package. It features 57 mV typical dropout at 50 mA, 17 µA quiescent current under load, and 56 µV_RMS output noise (measured on TPS79030 variant with 0.01 µF bypass cap). It is designed for battery-powered portable electronics requiring stable low-voltage rail generation with minimal power loss.

For engineers reviewing the TPS79015DBVR datasheet, TPS79015DBVR pinout, TPS79015DBVR application, or TPS79015DBVR equivalent, key selection criteria include its 1.5-V fixed output, PMOS pass architecture enabling ultralow dropout and load-independent quiescent current, enable-controlled standby mode (1 µA), and BYPASS pin for external noise filtering - all critical for micropower, noise-sensitive, space-constrained designs.

Technical Context

The TPS79015DBVR uses a PMOS pass element instead of a conventional PNP transistor, eliminating drive-current dependency on load and enabling both ultralow dropout (57 mV @ 50 mA) and stable 17 µA quiescent current across 0–50 mA output range. Its internal 150-kΩ resistor on the BYPASS pin forms an RC low-pass filter with an external capacitor to suppress reference noise.

It integrates overcurrent limiting (~350 mA trip), thermal shutdown (~165°C), and reverse-current protection via the PMOS body diode. The EN pin has a ~1.5 V threshold (1.7 V high, 0.9 V low), no hysteresis, and supports logic-level control for system power sequencing.

Key Specifications

Pinout & Package

TPS79015DBVR is housed in a 5-pin SOT-23 (DBV) package - 2.9 mm × 1.6 mm × 1.1 mm, surface-mount, JEDEC MO-178 compliant, with gull-wing leads and NIPDAU lead finish (RoHS-compliant).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-noise, micropower LDO applications.

Compared with TPL720F15-DBVR and MCP1700T-1502E/TT, the TPS79015DBVR uniquely balances 1.5-V precision, 50-mA capability, 17-µA IQ, 57-mV dropout, and integrated BYPASS-based noise reduction - making it optimal for compact, battery-limited, noise-sensitive systems where all four parameters are simultaneously constrained.

Availability

TPS79015DBVR is available at Aetrix Electronics and suitable for wearable health monitors, industrial wireless transmitters, and automotive cabin controllers requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for TPS79015DBVR 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 LDO design expertise and broad automotive/industrial qualification.

The TPS790xx product line was engineered specifically for battery-powered portable equipment - prioritizing ultralow quiescent current, low-noise output, minimal dropout, and miniature packaging to maximize runtime and board-area efficiency.

FAQ

What is the minimum input voltage required for stable operation of the TPS79015DBVR?

The TPS79015DBVR requires a minimum input voltage of 2.7 V or VO(typ) + 1 V (i.e., 2.5 V), whichever is greater - so 2.7 V is the absolute minimum. This ensures sufficient headroom for the 57 mV typical dropout and maintains regulation across temperature and load. Below 2.7 V, output voltage may drop out of specification even at light loads.

Does the TPS79015DBVR require an external bypass capacitor, and what value is recommended?

Yes, the TPS79015DBVR requires an external ceramic capacitor on the BYPASS pin to achieve its specified low-noise performance. A 0.01 µF capacitor is recommended for optimal 56 µV_RMS noise (as validated on the TPS79030 variant and confirmed for the family); values from 0.01 µF to 0.1 µF are supported, but larger values increase startup time due to the 150-kΩ internal RC time constant.

Can the TPS79015DBVR be used with ceramic output capacitors, and what ESR range is acceptable?

Yes, the TPS79015DBVR is stable with ceramic output capacitors. The recommended output capacitance is ≥4.7 µF with an ESR between 0.2 Ω and 10 Ω. For low-ESR ceramics (e.g., <0.2 Ω), a small series resistor may be needed to maintain phase margin; multilayer ceramics meeting the ESR spec eliminate the need for added components and improve transient response.

What protection features are built into the TPS79015DBVR?

The TPS79015DBVR includes overcurrent limiting (trip point ~350 mA), thermal shutdown (~165°C junction), and reverse-current protection via the intrinsic PMOS body diode. When current limiting activates, output voltage folds back linearly; thermal shutdown disables regulation until junction cools ~25°C below trip point, then resumes automatically - no external circuitry required for basic fault resilience.

How does the enable (EN) pin function on the TPS79015DBVR, and what are its voltage thresholds?

The EN pin on the TPS79015DBVR is active-high: applying <0.9 V disables the regulator (reducing ground current to 1 µA), while >1.7 V enables normal operation. The actual switching threshold is approximately 1.5 V, with no intentional hysteresis - so clean, well-decoupled logic signals are required to prevent chatter during slow-rising enable edges.