NCV8730ASN500T1G - 150mA 38V LDO, 5.0V Fixed, TSOP-5 | onsemi
MPN: NCV8730ASN500T1G ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.93 | $0.93 |
| 10 | $0.84 | $8.40 |
| 100 | $0.7 | $70.00 |
| 500 | $0.58 | $290.00 |
| 1,000 | $0.48 | $480.00 |
NCV8730ASN500T1G Overview
An LDO (Low-Dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage approaches the output voltage. Within the broader system hierarchy, an LDO belongs to the family of linear regulators, which in turn sit under voltage regulators, a sub-category of power management integrated circuits (PMICs). Unlike switching regulators, an LDO dissipates the voltage difference (VIN − VOUT) × IOUT as heat, but it introduces no switching noise, making it ideal for analog, RF, and microcontroller supply rails.
Key features of the NCV8730ASN500T1G include the 38 V absolute-maximum input rating, 1 µA typical quiescent current (per the onsemi NCV8730 datasheet), a Power-Good flag that asserts when the output is in regulation, and built-in protections such as current limit and thermal shutdown. The CMOS architecture provides fast transient response to sudden load steps, and the 5-pin TSOP package keeps the PCB footprint compact for space-constrained modules.
Architecturally, the NCV8730 uses a PMOS pass element driven by a precision bandgap reference, and the fixed 5.0 V variant (denoted "SN500" in the ordering code) eliminates external feedback resistors. The PG comparator monitors the output and pulls the open-drain PG pin low if VOUT falls below approximately 92% of nominal, which a host MCU or sequencer can use to detect brown-out conditions.
Typical applications include automotive body electronics and sensor modules, industrial battery-powered instrumentation, IoT and smart-sensor nodes, low-power microcontroller rails, and standby power rails in energy-harvesting systems. The wide VIN range also makes it suitable for 12 V/24 V automotive buses post-protection.
When designing with this part, place input and output ceramic capacitors as close as possible to the pins and keep the PG pull-up resistor value low enough to meet the required rise time. Designers should also evaluate the worst-case power dissipation (PD = (VIN − VOUT) × IOUT) to confirm the TSOP-5 thermal envelope is not exceeded.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes for the NCV8730ASN500T1G that are not found in the manufacturer datasheet alone.
Drop-in alternatives for NCV8730ASN500T1G — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
NCV8703SN50T1G
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
NCV8730ASN330T1G
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
NCV8730ASN180T1G
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
LP2980AIM5-5.0
✅ Drop-In📋 Reference alternative (not in catalog)
NCV8730ASN500T1G Maximum Ratings & Electrical Characteristics
| Manufacturer | onsemi |
| Part Number | NCV8730ASN500T1G |
| Output Type | Fixed |
| Output Voltage (Nominal) | 5.0 V |
| Maximum Output Current | 150 mA |
| Input Voltage Range | Up to 38 V |
| Quiescent Current (Typical) | 1 µA |
| Topology | CMOS LDO (PMOS pass element) |
| Power Good Output | Yes (open-drain) |
| Package | TSOP-5 (5-pin) |
| Mounting Type | Surface Mount |
| Automotive Qualification | AEC-Q100 qualified (NCV prefix) |
| RoHS Status | Compliant |
NCV8730ASN500T1G Pin Configuration
| Pin 1 | VIN — Input supply voltage (up to 38 V) |
| Pin 2 | GND — Ground |
| Pin 3 | EN/NC — Enable or no-connect depending on variant |
| Pin 4 | PG — Power-Good open-drain output |
| Pin 5 | VOUT — Regulated 5.0 V output |
Typical Applications
NCV8730ASN500T1G is suitable for 6 applications: Automotive Body Electronics, Industrial Battery-Powered Sensors, IoT Always-On Standby Rails, Low-Power Microcontroller Rails, Standby Power for Energy-Harvesting Systems, Automotive Sensor Modules.
Automotive Body Electronics
The NCV8730ASN500T1G is well matched to automotive body-control modules and accessory rails. The 38 V absolute-maximum input handles 12 V load-dump events (TVS-clamped to ~35 V) and 24 V truck buses after protection, while the 5.0 V fixed output feeds microcontrollers, sensor signal-conditioning ICs, and LIN transceivers. The AEC-Q100 qualification (denoted by the NCV prefix) is mandatory for under-hood and cabin modules, and the 1 µA quiescent current keeps quiescent drain on the battery within OEM targets (typically <100 µA per ECU). The Power-Good output enables a host MCU to verify rail health before enabling downstream actuators, supporting ISO 26262 functional-safety diagnostic requirements.
Recommended
Industrial Battery-Powered Sensors
For 4-20 mA loop, two-wire sensor transmitters, and remote monitoring nodes, the NCV8730ASN500T1G provides a stable 5.0 V rail from a wide input range that accommodates both 3.6 V lithium primaries and 24 V industrial supplies. The 1 µA quiescent current is the key enabler for multi-year battery life, while the 150 mA continuous rating supports higher-power transmitters, BLE modules, and even small solenoid drivers. The CMOS architecture provides fast transient response to load steps from a wake-up radio. The Power-Good flag can wake a host MCU only when the rail is stable, avoiding brown-out firmware corruption during battery insertion.
Recommended
IoT Always-On Standby Rails
The NCV8730ASN500T1G is ideal for the always-on rail of an IoT gateway, smart-sensor, or smart-home node that must remain responsive to wake events. The 1 µA quiescent current keeps standby power well below 10 µA, so an energy harvester or coin cell can sustain the system indefinitely, while the 5.0 V fixed output conveniently powers most Wi-Fi/BLE modules. The Power-Good output can gate the main SoC's reset, ensuring the firmware only boots into a known-good power state. With up to 38 V input tolerance, the part can also survive wall-wart miswiring in retrofit installs.
Recommended
Low-Power Microcontroller Rails
In battery or USB-powered embedded designs, the NCV8730ASN500T1G can drop directly from a wide input source to a clean 5.0 V supply for a low-power MCU such as a PIC, MSP430, or small Cortex-M0/M4. Its 1 µA quiescent current adds negligible drain to the system, and the 38 V input tolerance means a single LDO can serve designs ranging from 2-cell Li-Ion (8.4 V max) to industrial 24 V. The Power-Good output feeds the MCU's reset supervisor input, enabling deterministic boot. The TSOP-5 footprint is friendly to hand-soldered prototypes and tightly-routed production boards.
Recommended
Standby Power for Energy-Harvesting Systems
Energy-harvesting designs (solar, thermal, vibration) need an LDO that draws microamps from a possibly-fluctuating input and still regulates cleanly when the harvester wakes. The NCV8730ASN500T1G's 1 µA IQ and 38 V input tolerance are ideal: the wide range accepts rectified solar panels and piezoelectric rectifiers, while the low IQ preserves harvested energy for storage. The 5.0 V fixed output can charge a small Li-Ion cell through an external charge controller or directly bias the harvester's boost-stage reference. The Power-Good output signals a downstream MCU to wake the load only when regulation is achieved.
Recommended
Automotive Sensor Modules
The NCV8730ASN500T1G is a strong fit for dedicated automotive sensor modules such as tire-pressure monitoring system (TPMS) sensors, rain/light sensors, and parking-aid sensor heads. These modules must run on a single 3 V coin cell or 12 V bus, draw microamps in sleep, and survive load-dump and reverse-battery transients. The NCV prefix attests AEC-Q100 qualification for the -40 °C to +125 °C automotive temperature range. The 5.0 V output conveniently powers the sensor's op-amps, MCU, and RF front-end, while the Power-Good flag allows the host MCU to detect a brown-out before the sensor emits a faulty reading.
Recommended
Recommended Products Summary
Engineering reference data for NCV8730ASN500T1G — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | NCV8703SN50T1G | NCV8730ASN330T1G | NCV8730ASN180T1G | LP2980AIM5-5.0 | LP5900TLX-1.8 |
|---|---|---|---|---|---|---|
| Brand | onsemi | onsemi | onsemi | onsemi | Texas Instruments | Texas Instruments |
| Package | TSOP-5 | TSOP-5 | TSOP-5 | TSOP-5 | SOT-23-5 | DSBGA-4 |
| Output Voltage | 5.0 V | 5.0 V | 3.3 V | 1.8 V | 5.0 V | 1.8 V |
| Maximum Input Voltage | 38 V | ~12 V | 38 V | 38 V | 16 V | 5.5 V |
| Output Current | 150 mA | 150 mA | 150 mA | 150 mA | 50 mA | 150 mA |
| Quiescent Current | 1 µA | ~10 µA | 1 µA | 1 µA | ~1 mA | ~25 µA |
| Power-Good Output | Yes | No | Yes | Yes | No | No |
| Automotive Grade (AEC-Q100) | Yes (NCV) | Yes (NCV) | Yes (NCV) | Yes (NCV) | No (industrial) | No (industrial) |
Key Differentiators
- Wide 38 V input voltage for 12 V/24 V automotive buses (vs LP2980AIM5-5.0)
- 1 µA quiescent current for battery always-on systems (vs NCV8703SN50T1G)
- Integrated Power-Good output for rail monitoring (vs NCV8703SN50T1G)
Design Notes
Estimated: at VIN = 12 V, VOUT = 5.0 V, and full 150 mA load, the NCV8730ASN500T1G dissipates approximately (12 - 5.0) * 0.150 = 1.05 W. The TSOP-5 package has a typical theta_JA around 150-200 C/W on a 1 oz 4-layer board, so the junction temperature rise is roughly 1.05 W * 175 C/W ≈ 184 C above ambient, which exceeds the 125 C automotive limit. Designers must either derate load current, lower VIN, or add copper-pour heatsinking. At VIN = 6 V (USB/battery), dissipation drops to ~0.15 W and the part is comfortable in TSOP-5.
Place the 1 µF (or larger) input and output ceramic capacitors as close to the NCV8730ASN500T1G pins as possible, with short, wide traces to GND. Use X7R or X5R dielectrics for stability over temperature. Keep the PG pull-up resistor (typically 100 kΩ to VOUT or a logic rail) close to the PG pin to minimize noise pickup. Avoid routing high-current switching nodes near the PG trace to prevent false Power-Good de-assertion.
Do not exceed the 38 V absolute-maximum input voltage of the NCV8730ASN500T1G, even on transients - on 12 V/24 V automotive buses, add a TVS diode to clamp below 38 V. Ensure reverse-battery protection (a series diode or P-FET) if the part is exposed to user-replaceable wiring. The PG output is open-drain and requires a pull-up; leaving it floating will produce undefined logic levels. For new designs, confirm the exact variant (PG vs. no-PG) matches your needs - the NCV8703 family lacks Power-Good.
Compliance Information
RoHS and REACH compliance per onsemi product page; NCV prefix indicates AEC-Q100 automotive qualification; lead-free and halogen-free per onsemi datasheet.
