onsemi NCV8720BMT130TBG

Overview

NCV8720BMT130TBG from onsemi is an automotive-grade 350 mA very low dropout (VLDO) linear regulator with dual-rail NMOS architecture, fixed 1.30 V output, ±2% accuracy over −40 °C to +125 °C, 110 mV typical dropout at full load, and ultra-low bias current (80 µA typ). It delivers stable, low-noise power for FPGA core rails and camera sensor supplies in space-constrained automotive modules.

For engineers reviewing the NCV8720BMT130TBG datasheet, pinout, applications, or equivalent options, key selection criteria include its dual-input (VIN/VBIAS) operation, wettable-flank WDFN6 package, AEC-Q100 Grade 1 qualification, and compatibility with 2.2 µF ceramic output capacitors without external compensation.

Technical Context

The NCV8720BMT130TBG uses an NMOS pass transistor powered by a dedicated VBIAS rail (2.4–5.5 V), decoupling control circuitry from input supply noise and enabling stable regulation even when VIN approaches VOUT. Its separate bias path achieves high PSRR (>65 dB at 1 kHz for VBIAS) and eliminates dependency on VIN for internal logic.

It integrates soft-start with monotonic VOUT rise, undervoltage lockout (UVLO = 1.6 V on VBIAS), thermal shutdown (+160 °C trip), and current limiting (420–1000 mA). Enable logic features hysteresis and supports direct tie-to-VIN/VBIAS if unused.

Key Specifications

Pinout & Package

NCV8720BMT130TBG is housed in a thermally enhanced WDFN6 2 mm × 2 mm package (Case 511BR) with wettable flanks for automated optical inspection. The exposed thermal pad must be soldered to PCB ground plane for optimal thermal performance (R_JA = 65 °C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar very low dropout linear regulator applications.

Compared with TPS7A0513PDBVR and NCP114AMX130TCG, the NCV8720BMT130TBG uniquely supports dual-rail operation for superior PSRR and noise rejection, maintains regulation at lower VIN–VOUT differentials, and is qualified for automotive Grade 1 environments - making it the only option among the three validated for ADAS sensor power rails.

Availability

NCV8720BMT130TBG is available at Aetrix Electronics and suitable for automotive camera modules, ADAS radar processors, and infotainment SoC I/O rails requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.

Supply support for NCV8720BMT130TBG 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 is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The NCV8720 series targets automotive power management with dual-rail VLDO architecture, designed specifically for noise-critical point-of-load regulation in ADAS, body electronics, and infotainment systems.

FAQ

What is the nominal output voltage of the NCV8720BMT130TBG?

The NCV8720BMT130TBG is factory-programmed for a fixed 1.30 V output voltage. This value is laser-trimmed during production and cannot be adjusted externally. The ±2% accuracy specification applies across the full operating temperature range (−40 °C to +125 °C) and load conditions (0–350 mA), making it suitable for precision logic and analog supply applications where feedback resistors would introduce drift or layout sensitivity.

Does the NCV8720BMT130TBG require an external bias supply, and what are the voltage requirements?

Yes, the NCV8720BMT130TBG requires a separate VBIAS supply connected to Pin 4. VBIAS must be between 2.4 V and 5.5 V, and must exceed VOUT by at least 1.4 V - so for the 1.30 V output, minimum VBIAS is 2.45 V. This bias rail powers all internal control circuitry and enables high PSRR performance independent of the main VIN rail. Failure to meet VBIAS specifications triggers UVLO and disables regulation.

Can the NCV8720BMT130TBG operate with a 2.2 µF ceramic output capacitor, and why is this significant?

Yes, the NCV8720BMT130TBG is explicitly characterized and guaranteed stable with a 2.2 µF ceramic output capacitor - no additional ESR or external compensation is needed. This eliminates reliance on bulkier, less reliable tantalum or aluminum electrolytic capacitors, reduces PCB footprint, improves MTBF, and simplifies layout. The device's NMOS topology inherently provides phase margin robustness across wide capacitance tolerances and DC-bias effects common in Class II ceramics.

Is the NCV8720BMT130TBG qualified for automotive applications, and what certifications does it hold?

Yes, the NCV8720BMT130TBG carries the NCV prefix indicating automotive qualification. It is AEC-Q100 qualified (Grade 1: −40 °C to +125 °C ambient), PPAP-capable, and manufactured in onsemi's IATF 16949-certified facilities. It also meets Pb-free and RoHS requirements. These qualifications confirm its suitability for under-hood and cabin applications including ADAS, body control modules, and digital cluster power rails.

What thermal considerations apply to the NCV8720BMT130TBG in high-power operation?

The NCV8720BMT130TBG uses a WDFN6 package with an exposed thermal pad that must be soldered to a PCB ground plane for effective heat dissipation. Its junction-to-air thermal resistance is 65 °C/W under JEDEC-standard test conditions. At 350 mA and 1.30 V output with VIN = 3.3 V, power dissipation is ~0.7 W - requiring careful thermal design to keep junction temperature below +125 °C. Thermal shutdown activates at +160 °C and resets at +140 °C, providing fail-safe protection.