onsemi NCV8502PDW33R2G

Overview

NCV8502PDW33R2G from onsemi is a 3.3 V, 150 mA automotive-grade LDO linear regulator with integrated active RESET (with programmable delay), FLAG early-warning monitor, and fault protection. It delivers ±2.0% output accuracy, 0.6 V max dropout at full load, and draws only 90 µA quiescent current at 100 µA load-ideal for battery-powered microprocessor systems in harsh environments.

For engineers reviewing the NCV8502PDW33R2G datasheet, pinout, applications, or equivalent options, key selection criteria include its AEC-Q100 qualification, 60 V peak transient tolerance, −15 V reverse voltage immunity, thermal/short-circuit protection, and dual-monitoring capability (RESET + FLAG) for deterministic microcontroller shutdown sequencing.

Technical Context

The NCV8502PDW33R2G implements a bandgap-referenced error amplifier with current-limit and thermal shutdown circuitry. Its RESET function operates down to VOUT = 1.0 V and includes hysteresis (0.97×/0.98× VOUT thresholds); the FLAG comparator triggers at 1.20 V (±0.11 V) on the MON pin with 20–100 mV hysteresis.

It uses an exposed-pad SOIC-16 (Case 751AG) package optimized for automotive EMC and thermal performance (RJA = 56 °C/W, RJC = 15 °C/W). The device supports external delay timing via capacitor on DELAY pin and adjustable reset threshold via resistor divider on RADJ pin-both configurable without altering core regulation.

Key Specifications

Pinout & Package

NCV8502PDW33R2G uses the SOIC-16 wide-body exposed-pad package (Case 751AG), measuring 10.3 mm × 7.5 mm × 2.5 mm with thermal pad for enhanced heat dissipation in automotive under-hood applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV73333PDBVR and TPS7B6733QPWPRQ1, the NCV8502PDW33R2G uniquely integrates both RESET and FLAG in a single AEC-Q100-qualified package with superior low-VOUT reset validity and automotive transient robustness-enabling smaller, more reliable power architectures.

Availability

NCV8502PDW33R2G is available at Aetrix Electronics and suitable for automotive body electronics, ADAS sensor ECUs, telematics units, and infotainment systems requiring stable component supply, long-term lifecycle support, and AEC-Q100 compliance.

Supply support for NCV8502PDW33R2G 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 innovation for automotive, industrial, cloud, medical, and IoT applications.

The NCV8502PDW33R2G belongs to the NCV8502 series of micropower LDO regulators designed specifically for automotive microprocessor power management-emphasizing fault resilience, precise reset supervision, and extended temperature operation.

FAQ

What is the maximum input voltage rating for the NCV8502PDW33R2G?

The NCV8502PDW33R2G supports a continuous DC input voltage range of −15 V to +48 V. It also withstands +60 V peak transients (per ISO 7637-2 Pulse 5a) for up to 100 ms, making it suitable for 12 V and 24 V automotive systems with load-dump conditions. Operation above 48 V is not specified but may be assured within transient limits.

Does the NCV8502PDW33R2G require an external capacitor on the DELAY pin?

Yes-the DELAY pin (Pin 10) requires an external capacitor to set the RESET assertion delay time. Using the typical delay charge current of 2.5 µA and switching threshold of 1.8 V, a 33 nF capacitor yields ~23.8 ms delay. The capacitor must be placed close to the pin with low-ESR characteristics; values from 10 nF to 100 nF are commonly used.

Can the FLAG output of the NCV8502PDW33R2G drive a microcontroller GPIO directly?

Yes-the FLAG pin is an open-collector NPN output rated for 1 mA sink current. It can directly interface with standard 3.3 V or 5 V microcontroller GPIOs using a pull-up resistor (typically 10 kΩ) to the host logic rail. The output saturation voltage is ≤0.4 V at 1 mA, ensuring solid logic-low recognition across temperature.

Is the NCV8502PDW33R2G pin-compatible with other devices in the NCV8502 family?

No-the NCV8502PDW33R2G uses the SOIC-16 exposed-pad (Case 751AG) package, while fixed-output SO-8 variants (e.g., NCV8502D33R2G) use Case 751. Pin functions differ significantly: SO-8 lacks RADJ and DELAY pins, and assigns RESET/FLAG to different locations. PCB layout is not interchangeable between PDW and D suffix parts.

What thermal derating applies to the NCV8502PDW33R2G at 105°C ambient?

With RJA = 56 °C/W and max TJ = 150°C, the NCV8502PDW33R2G can dissipate up to (150 − 105)/56 ≈ 0.80 W at 105°C ambient. At 150 mA load and 14 V input, power dissipation is (14 − 3.3) × 0.15 + 0.00009 × 14 ≈ 1.61 W - exceeding this limit. Therefore, either reduce input voltage, lower load current, or add copper area/heatsinking to maintain safe junction temperature.