onsemi NCV8715MX25TBG

Overview

NCV8715MX25TBG from onsemi is a 2.5 V fixed-output, 50 mA ultra-low-quiescent-current LDO linear voltage regulator with 2.5 V to 24 V input range, ±2% output accuracy over load/line/temperature, 260–450 mV dropout at 50 mA, and AEC-Q100 Grade 1 qualification (−40°C to +125°C). It delivers stable power to low-power automotive infotainment and safety system sensors.

For engineers reviewing the NCV8715MX25TBG datasheet, pinout, applications, or equivalent options, key selection criteria include its 3.4–5.8 µA ground current across full load and temperature, 60 dB PSRR at 100 kHz, 115 µV_RMS output noise (200 Hz–100 kHz), thermal shutdown at 170°C, and XDFN6 1.5 × 1.5 mm package compatibility with space-constrained automotive PCBs.

Technical Context

The NCV8715MX25TBG implements a bandgap-referenced error amplifier driving a PMOS pass transistor, enabling ultra-low I_Q and wide VIN operation without external bias. Its internal current limiting and thermal shutdown circuitry operate independently of external components.

Designed for automotive ambient conditions, it maintains ±2% output regulation across −40°C to +125°C junction temperature, supports ceramic output capacitors ≥0.47 µF (no ESR requirement), and achieves 60 dB PSRR at 100 kHz with 10 µF C_OUT, making it suitable for noise-sensitive analog and RF subsystems.

Key Specifications

Pinout & Package

NCV8715MX25TBG is packaged in XDFN6 (Case 711AE), 1.5 mm × 1.5 mm, 0.5 mm height, with wettable flanks and Pb-free plating. The exposed thermal pad must be soldered to a PCB copper pour for optimal thermal performance (R_JA = 260°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV73325PDBVR and NCP114AMX25T2G, the NCV8715MX25TBG uniquely combines AEC-Q100 Grade 1 qualification, sub-6 µA quiescent current, and XDFN6 space efficiency - making it the only option for compact, battery-sensitive, high-temperature automotive subsystems requiring long-term reliability.

Availability

NCV8715MX25TBG is available at Aetrix Electronics and suitable for automotive infotainment, ADAS sensor modules, and body control units requiring stable component supply with full traceability and automotive-grade compliance.

Supply support for NCV8715MX25TBG 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

onsemi (Nasdaq: ON) is a global semiconductor leader delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The NCV8715MX25TBG belongs to onsemi's automotive-qualified LDO family designed specifically for ultra-low-power, wide-input-voltage operation in harsh-temperature vehicle subsystems - emphasizing reliability, noise immunity, and long-term supply stability.

FAQ

What is the maximum input voltage rating for the NCV8715MX25TBG?

The NCV8715MX25TBG has an absolute maximum input voltage rating of 24 V, with recommended operating range from 3.5 V to 24 V for 2.5 V output. Operation above 24 V risks permanent damage per Absolute Maximum Ratings. The device sustains full functionality across this range while maintaining ±2% output accuracy and 260–450 mV dropout at 50 mA load.

Does the NCV8715MX25TBG require an external output capacitor, and what value is recommended?

Yes, the NCV8715MX25TBG requires an external ceramic output capacitor for stability. A minimum of 0.47 µF X5R or X7R ceramic capacitor must be placed between OUT and GND, located within 2 mm of the package. Values up to 10 µF are supported, with 1–4.7 µF offering optimal trade-off between noise reduction and transient response for automotive applications.

Is the NCV8715MX25TBG pin-compatible with other variants in the NCV8715 family?

Yes, all NCV8715 variants - including NCV8715MX12TBG, NCV8715MX25TBG, and NCV8715MX33TBG - share identical XDFN6 pinout and footprint. The only differences are output voltage and top-side marking (VE for 2.5 V); no PCB redesign is needed when changing fixed-output versions within the same package.

What thermal performance can be expected from the NCV8715MX25TBG in a typical automotive PCB layout?

With a standard 4-layer PCB using a 650 mm² copper thermal pad (1 oz thickness), the NCV8715MX25TBG achieves R_JA = 260°C/W. At 50 mA load and 12 V input, power dissipation is ~475 mW, resulting in ~124°C junction rise above ambient - well within the 150°C absolute max and 125°C recommended limit when ambient is ≤25°C. Larger copper areas further reduce thermal resistance.

How does the NCV8715MX25TBG handle line and load transients in automotive environments?

The NCV8715MX25TBG maintains output regulation within ±15 mV during 10–90% load steps (0–50 mA) and ±30 mV during 2–24 V input steps, as verified in Figures 34–36 of the datasheet. Its fast internal loop response, combined with low-ESR ceramic output capacitance, ensures robust immunity to ignition noise, alternator ripple, and load dump-induced transients common in 12 V vehicle systems.