onsemi NCV8752ASN28T1G

Overview

NCV8752ASN28T1G from onsemi is a 200 mA ultra-low-noise, ultra-low-quiescent-current LDO regulator designed for RF-sensitive automotive and portable applications. It delivers ±2% output accuracy over load/line/temperature, 11.5 µV_RMS noise (100 Hz–100 kHz), 68 dB PSRR at 1 kHz, and 130 mV typical dropout at 200 mA - enabling clean power for satellite radio receivers and rear-view camera modules.

For engineers reviewing the NCV8752ASN28T1G datasheet, pinout, applications, or equivalent options, key selection criteria include its AEC-Q100 qualification, active output discharge, Power Good flag with 2% hysteresis, and stable operation with only a 1 µF ceramic output capacitor - critical for space-constrained infotainment and ADAS subsystems.

Technical Context

The NCV8752ASN28T1G employs a PMOS pass transistor architecture with adaptive ground current control to achieve 12 µA typical quiescent current in active mode and 120 nA in shutdown. Its internal bandgap reference and error amplifier deliver tight regulation across −40°C to +125°C junction temperature.

It integrates Auto Low-Power Mode, thermal shutdown (160°C trip, 20°C hysteresis), current limiting (~400 mA), undervoltage lockout (1.5 V typ.), and an open-drain Power Good output that asserts when V_OUT reaches 92–96% of nominal and de-asserts at 90–94%, supporting robust system sequencing in automotive ECUs.

Key Specifications

Pinout & Package

NCV8752ASN28T1G is packaged in XDFN-6 (1.5 mm × 1.5 mm, 0.5 mm pitch, Case 711AE), optimized for thermal performance (R_JA = 149°C/W) and board space savings in compact automotive modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS7A0528PDBVR and NCP1117ST28T3G, the NCV8752ASN28T1G uniquely combines AEC-Q100 qualification, integrated Power Good, active discharge, and sub-12 µA quiescent current - making it the only viable option for ASIL-B-compliant, space-constrained automotive vision systems requiring deterministic power sequencing and low-noise analog biasing.

Availability

NCV8752ASN28T1G is available at Aetrix Electronics and suitable for satellite radio receivers, GPS modules, and rear-view camera systems requiring stable component supply with automotive-grade traceability and lifecycle management.

Supply support for NCV8752ASN28T1G 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 silicon solutions for automotive, industrial, cloud, medical, and IoT applications - with leadership in power management, imaging, and intelligent sensing.

The NCV8752ASN28T1G belongs to onsemi's automotive-grade LDO portfolio, engineered specifically for noise-sensitive RF and sensor subsystems in vehicles - emphasizing ultra-low IQ, AEC-Q100 reliability, and seamless integration into ASIL-B domain controllers.

FAQ

What is the fixed output voltage of the NCV8752ASN28T1G?

The NCV8752ASN28T1G is a fixed 2.8 V output LDO regulator, as indicated by the "28" in its part number per onsemi's ordering convention. This voltage is trimmed at wafer test and maintained within ±2% tolerance across load, line, and temperature (−40°C to +125°C). It is intended for powering 2.8 V logic interfaces, RF amplifiers, and image sensors in automotive applications without external feedback components.

Does the NCV8752ASN28T1G require an external noise-bypass capacitor?

No, the NCV8752ASN28T1G does not require an external noise-bypass capacitor to achieve its specified 11.5 µV_RMS output noise (100 Hz–100 kHz). Its internal design - including low-noise bandgap reference and optimized error amplifier - enables this performance with only a 1 µF ceramic output capacitor. Adding extra bypass caps provides no measurable noise reduction and may risk instability if ESR falls outside the recommended range.

How does the Power Good (PG) output of the NCV8752ASN28T1G behave during startup and fault conditions?

The NCV8752ASN28T1G's open-drain PG output asserts high (via external pull-up) when V_OUT rises to 92–96% of 2.8 V and de-asserts low when V_OUT falls to 90–94% of 2.8 V, providing 2% hysteresis. During startup, PG asserts after ~200 µs (t_ON2) from EN assertion. Under thermal shutdown or short-circuit, PG de-asserts within 2–5 µs (t_RR), enabling immediate system-level fault detection and safe shutdown sequencing in automotive control units.

Can the NCV8752ASN28T1G be used with a 1.0 µF ceramic output capacitor?

Yes, the NCV8752ASN28T1G is explicitly characterized and guaranteed stable with a 1.0 µF ceramic output capacitor (X5R/X7R), as confirmed in its datasheet Section 4 ("ELECTRICAL CHARACTERISTICS") and Application Information. The device requires no minimum ESR and tolerates ESR up to 700 mΩ. Using smaller capacitors (down to 500 nF) is possible but reduces phase margin and transient immunity - 1.0 µF is the recommended value for robust operation across temperature and voltage ranges.

Is the NCV8752ASN28T1G pin-compatible with other variants in the NCV8752 family?

The NCV8752ASN28T1G shares identical XDFN-6 pinout (Case 711AE) and pin functions with all NCV8752 variants (e.g., NCV8752ASN18T1G, NCV8752ASN33T1G), including IN, PG, GND, EN, N/C, and OUT assignments. However, output voltage, PG timing (t_RD/t_RR), and certain transient parameters differ by variant - so while PCB layout is reusable, firmware-level PG timeout settings and load transient margins must be validated per specific voltage version.