onsemi NCV8164AML300TCG

Overview

NCV8164AML300TCG from onsemi is a 300 mA automotive-grade LDO regulator with fixed 3.0 V output, ultra-low noise (9 µV_RMS), high PSRR (85 dB @ 1 kHz), 110 mV dropout at 300 mA, and integrated Power Good open-collector output - designed for RF and analog power rails in vehicle infotainment and telematics systems.

For engineers reviewing the NCV8164AML300TCG datasheet, pinout, applications, or equivalent options, this page delivers verified package mapping (DFNW8, 3 mm × 3 mm), confirmed thermal performance (R_JA = 50 °C/W), exact enable/power-good logic thresholds, and real-world stability data with 1 µF ceramic capacitors.

Technical Context

The NCV8164AML300TCG implements a PMOS pass transistor architecture enabling low dropout and near-zero ground current variation across load. Its internal reference is trimmed to ±2% over −40°C to +150°C, and the Power Good circuit asserts when V_OUT reaches ≥95% of nominal and de-asserts at ≤90%, with open-drain output capable of sinking 10 mA.

It features active output discharge (R_DIS = 260 Ω) triggered during shutdown, thermal shutdown at 165°C with 15°C hysteresis, and operates from 1.6 V to 5.5 V input while maintaining stability with 1 µF X5R/X7R ceramic capacitors on both IN and OUT - no minimum ESR required.

Key Specifications

Pinout & Package

NCV8164AML300TCG is housed in a thermally enhanced DFNW8 (3 mm × 3 mm, 0.65 mm pitch) package with exposed pad (EPAD) tied to GND for optimal heat dissipation (R_JC(bot) = 7.9 °C/W). The 8-pin layout supports high-current routing and PCB-level thermal management.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS7B8133QDGNRQ1 and MCP1826T-3002E/DB, the NCV8164AML300TCG uniquely combines automotive qualification, Power Good signaling, active output discharge, and 9 µV_RMS noise in a 3.0 V fixed variant - making it the only drop-in solution for safety-critical infotainment power domains requiring rail validation and fast fault recovery.

Availability

NCV8164AML300TCG is available at Aetrix Electronics and suitable for automotive infotainment systems, in-vehicle networking gateways, and telematics modules requiring stable component supply, long-lifecycle support, and AEC-Q100 compliance.

Supply support for NCV8164AML300TCG 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 (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient technologies for automotive, industrial, cloud, medical, and IoT applications.

The NCV8164AML300TCG belongs to onsemi's NCV8164 automotive LDO family, engineered specifically for noise-sensitive analog and RF subsystems in vehicles - emphasizing ultra-low noise, high PSRR, and functional safety-aware features like Power Good and thermal shutdown.

FAQ

What is the maximum input voltage for the NCV8164AML300TCG?

The NCV8164AML300TCG supports an absolute maximum input voltage of 6.0 V, with recommended operating range from 1.6 V to 5.5 V. Exceeding 6.0 V risks permanent damage per Absolute Maximum Ratings. For reliable 3.0 V output, VIN must remain ≥3.125 V under full 300 mA load due to its 125 mV typical dropout.

Does the NCV8164AML300TCG require an external resistor for the Power Good (PG) pin?

Yes - the PG pin is open-collector and requires an external pull-up resistor (10 kΩ to 100 kΩ) to either V_OUT or V_IN, depending on sequencing requirements. Connecting to V_OUT ensures PG goes low when the LDO is disabled, enabling accurate power-rail monitoring in multi-rail systems using the NCV8164AML300TCG.

Is the NCV8164AML300TCG stable with ceramic output capacitors?

Yes - the NCV8164AML300TCG is explicitly designed for stability with ≥1 µF X5R or X7R ceramic capacitors and does not require minimum ESR. This eliminates need for tantalum or aluminum electrolytic capacitors, reducing board area and improving reliability in automotive environments where temperature cycling is severe.

What thermal performance can be expected from the NCV8164AML300TCG in its DFNW8 package?

In the DFNW8 (3 mm × 3 mm) package, the NCV8164AML300TCG achieves R_JA = 50 °C/W (natural convection, high-K board) and R_JC(bot) = 7.9 °C/W. With proper EPAD grounding and 2 oz copper thermal pads, it sustains 300 mA at +85°C ambient without thermal shutdown - validated per JEDEC 51-7 guidelines.

How does the active output discharge function work on the NCV8164AML300TCG?

When the EN pin is pulled low (<0.25 V), the NCV8164AML300TCG activates an internal 260 Ω discharge FET between OUT and GND, rapidly draining stored charge from the output capacitor. This prevents residual voltage from interfering with downstream logic states or causing back-powering - critical for safe power-down sequencing in automotive ECUs using the NCV8164AML300TCG.