onsemi NCP715MX25TBG

Overview

NCP715MX25TBG from onsemi is a 50 mA ultra-low quiescent current (4.7 µA max) fixed-output 2.5 V LDO linear voltage regulator with 2.5 V to 24 V input range, ±2% output accuracy over load/line/temperature, and integrated thermal shutdown and current limiting. It delivers stable power to low-power microcontrollers and sensors in battery-powered portable equipment.

For engineers reviewing the NCP715MX25TBG datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at 50 mA (260–450 mV), PSRR of 60 dB at 100 kHz, output noise of 115 µV_RMS (200 Hz–100 kHz), and compatibility with 0.47 µF ceramic output capacitors.

Technical Context

The NCP715MX25TBG uses a bandgap reference and MOSFET pass element to maintain regulation across wide input voltage (2.5–24 V) and temperature (−40°C to +125°C) ranges. Its internal UVLO prevents operation below ~2.3 V, and the driver stage incorporates current limiting and thermal shutdown triggered at 170°C with 15°C hysteresis.

Stability is achieved without minimum ESR requirements - the regulator is fully compatible with low-ESR ceramic capacitors ≥0.47 µF. The ground current remains constant at ≤4.2 µA up to 50 mA load and −40°C to +85°C ambient, enabling predictable battery life estimation in always-on systems.

Key Specifications

Pinout & Package

XDFN6 1.5 mm × 1.5 mm, 0.5 mm pitch, Pb-free package with wettable flanks (Case 711AE). Exposed thermal pad improves thermal resistance (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 MCP1700T-2502E/TT and TLD1124-12, the NCP715MX25TBG uniquely combines 24 V input capability, thermal shutdown, current limiting, and ±2% accuracy in a 1.5×1.5 mm XDFN6 package - making it the only option among the three qualified for unregulated 24 V industrial and heavy-vehicle applications.

Availability

NCP715MX25TBG is available at Aetrix Electronics and suitable for wearable health monitors, industrial sensor nodes, smart meter RTC backup circuits, and automotive body control modules requiring stable component supply across extended temperature and input voltage ranges.

Supply support for NCP715MX25TBG 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 supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The NCP715MX25TBG belongs to onsemi's wide-input-voltage LDO family designed specifically for battery-powered and industrial systems demanding ultra-low quiescent current, high accuracy, and robust protection across −40°C to +125°C.

FAQ

What is the maximum input voltage rating for the NCP715MX25TBG?

The NCP715MX25TBG has an absolute maximum input voltage rating of 24 V, with recommended operating range from 3.5 V to 24 V for the 2.5 V output version. Operation below 3.5 V is possible but may reduce dropout margin and load regulation performance. This 24 V rating enables direct connection to 12 V and 24 V industrial and automotive power rails without pre-regulation.

Does the NCP715MX25TBG require a minimum ESR output capacitor?

No, the NCP715MX25TBG does not require a minimum ESR output capacitor. It is explicitly designed to remain stable with standard X5R or X7R ceramic capacitors ranging from 0.47 µF to 10 µF. This eliminates the need for tantalum or aluminum electrolytic capacitors and simplifies design, especially in space-constrained layouts where low-profile ceramics are preferred.

What is the dropout voltage specification for the NCP715MX25TBG at full load?

At 50 mA output current and +25°C, the NCP715MX25TBG exhibits a dropout voltage of 260–450 mV, defined as the difference between input and output voltage when V_OUT drops 75 mV below nominal. This allows the device to sustain 2.5 V output with as little as 2.75 V input - critical for extending battery runtime in deep-discharge scenarios.

How does the thermal shutdown feature operate in the NCP715MX25TBG?

The NCP715MX25TBG activates thermal shutdown at a junction temperature of 170°C and remains latched off until temperature falls by 15°C (hysteresis), resuming regulation at ~155°C. This behavior is guaranteed by design and characterization - not production-tested per unit - and provides fail-safe protection against sustained overload, poor PCB heatsinking, or ambient temperature excursions beyond spec.

Can the NCP715MX25TBG be used with a 0.47 µF output capacitor?

Yes, the NCP715MX25TBG is fully stable with a 0.47 µF ceramic output capacitor, as confirmed in the datasheet's "Output Decoupling" section and Figure 8–11 load transient plots. A 0.47 µF X5R/X7R capacitor placed within 2 mm of the OUT and GND pins ensures optimal transient response and meets all stability requirements across temperature and load conditions.