My Inquiry
My Account
onsemi NCV8509PDW25R2
- Part No.:
- NCV8509PDW25R2
- Manufacturer:
- onsemi
- Package:
- 16-SOIC (0.295", 7.50mm Width) Exposed Pad
- Datasheet:
-
NCV8509PDW25R2.pdf
- Description:
- IC REG LINEAR 5V/2.5V 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,458
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
NCV8509PDW25R2 from onsemi is an automotive-grade dual linear voltage regulator with sequenced power-up for microcontroller core (VOUT2 = 2.5 V ±2%, 100 mA) and I/O (VOUT1 = 5 V ±2%, 115 mA) rails. It features programmable slew rate control, dual-drive RESET with 96.5% threshold hysteresis, thermal shutdown at 150–210 °C, and integrated power shunt to reduce on-die dissipation. Used in telematics and powertrain ECUs where supply sequencing protects I/O ESD structures.
For engineers reviewing the NCV8509PDW25R2 datasheet, pinout, applications, or equivalent options, key selection criteria include output voltage pairing (5 V/2.5 V), SOW-16 exposed-pad thermal performance (RθJA = 57 °C/W), RESET delay programmability via external capacitor, and AEC-Q100 qualification for automotive use.
Technical Context
The NCV8509PDW25R2 implements independent error amplifiers and bandgap references for each output, enabling precise tracking and independent load regulation. Its dual-drive RESET circuit derives validity from both VIN1 and VOUT1, maintaining reset assertion down to 0 V on either rail - a critical feature for robust cold-crank operation in automotive systems.
Power sequencing is enforced via internal slew control logic tied to the SLEW pin, where a 6.0 µA current source charges an external capacitor (e.g., 33 nF) to generate a linear ramp. This controls VOUT1 rise time (710 V/s typical for 5 V option) and ensures VOUT2 powers up after VOUT1, preventing I/O latch-up during startup.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VOUT1 | 5.0 V ±2% (4.9–5.1 V), supports 115 mA load - powers MCU I/O with tight tolerance to meet interface voltage compliance. |
| VOUT2 | 2.5 V ±2% (2.45–2.55 V), supports 100 mA load - supplies MCU core logic with low-noise, stable bias. |
| Quiescent Current | 175 µA typical at light load - enables ultra-low standby power in always-on automotive modules. |
| SLEW Rate (VOUT1) | 710 V/s typical with 33 nF capacitor - provides controlled 5 V ramp time (~7 ms) to prevent inrush and ensure safe I/O initialization. |
| RESET Threshold | 96.5% of VOUT1 (4.825 V), 50 mV hysteresis - guarantees clean, noise-immune reset release during brownout recovery. |
| Thermal Shutdown | 150–210 °C junction range - protects die under sustained overload or high ambient conditions without latch-up. |
| Input Voltage Range | VIN1: −0.3 to 50 V DC - withstands automotive load dump transients up to 50 V without external clamping. |
Pinout & Package
NCV8509PDW25R2 uses a 16-lead SOIC wide-body package with exposed thermal pad (Case 751AG, PDW suffix). The exposed pad improves thermal resistance (RθJC = 16 °C/W) and must be soldered to PCB copper for optimal heat dissipation in automotive applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SLEW (Pin 1) | Slew rate control input | Accepts external capacitor (e.g., 33 nF) to program VOUT1/VOUT2 rise time; 6.0 µA internal charge current sets linear ramp. |
| Delay (Pin 2) | RESET timing capacitor node | Charged by 6.0 µA current source to set RESET assertion delay; discharge occurs when VOUT1 drops below threshold. |
| GND (Pin 3) | Power ground reference | Common return for both regulators and internal circuitry; must be low-impedance connection to minimize noise coupling. |
| RESET (Pin 6) | Active-low reset output | Dual-drive open-drain output valid down to 0 V on VIN1 or VOUT1; sinks 1.0 mA with <0.4 V drop. |
| VOUT2 (Pin 10) | Core supply output | 2.5 V ±2%, 100 mA regulated output for MCU core; requires 10 µF ceramic output capacitor. |
| VIN2 (Pin 12) | Core supply input | Input for VOUT2 path; accepts up to 50 V but limited to 10 mA reverse current - used with REX for power shunt operation. |
| VIN1 (Pin 13) | Main input & bias supply | Primary input (−0.3 to 50 V) powering VOUT1, internal bias, and RESET drive; supports load dump immunity. |
| VOUT1 (Pin 15) | I/O supply output | 5.0 V ±2%, 115 mA regulated output for MCU I/O; dropout ≤600 mV at 100 mA ensures operation at low battery. |
Key Features
| Feature | Design Value |
|---|---|
| Sequenced Power-Up | Guarantees VOUT1 (I/O) powers before VOUT2 (core) via SLEW-controlled ramp - prevents I/O latch-up during MCU boot. |
| Programmable RESET Delay | External capacitor on Delay pin sets reset hold time (e.g., ~9 ms with 33 nF); latched discharge ensures reliable fault recovery. |
| Power Shunt Architecture | REX resistor routes VOUT2 current from VIN1 to VIN2, reducing on-die power dissipation by up to 1.07 W at 18 V input. |
| AEC-Q100 Qualified | Qualified to Grade 1 (−40 °C to +125 °C ambient) with PPAP capability - meets automotive functional safety requirements for powertrain and telematics. |
| Low Dropout & High PSRR | 600 mV dropout at 100 mA load and >60 dB PSRR at 100 Hz enable stable operation in noisy automotive electrical environments. |
Applications
| Engine Control Unit (ECU) | Telematics Control Unit (TCU) |
|---|---|
Use Scenario: Powers 32-bit MCU (e.g., S32K144) requiring separate 5 V I/O and 2.5 V core rails during cold-crank (5.5 V battery). IC Role / Device Role / Timing Role: Dual linear regulator providing sequenced, low-noise, transient-robust supplies with RESET assertion during undervoltage. Use Value: Prevents I/O corruption during startup; maintains RESET until both outputs stabilize - eliminates MCU lockup in start-stop systems. | Use Scenario: Supplies LTE modem and GPS SoC in connected vehicle gateway with strict ESD protection on I/O pins. IC Role / Device Role / Timing Role: Sequenced regulator ensuring 5 V I/O powers before 2.5 V core to avoid ESD structure overstress during power-up. Use Value: Meets ISO 10605 ESD immunity requirements by controlling voltage ramp rate and eliminating I/O floating states. |
| Advanced Driver Assistance System (ADAS) Camera Module | Body Control Module (BCM) |
Use Scenario: Powers image sensor and ISP in rear-view camera operating across −40 °C to +105 °C ambient. IC Role / Device Role / Timing Role: Automotive-grade dual LDO delivering stable 5 V and 2.5 V with thermal shutdown and low quiescent current. Use Value: Enables <100 µA sleep mode current while retaining fast wake-up; thermal shutdown prevents field failures in sealed enclosures. | Use Scenario: Supplies microcontroller and CAN transceiver in door module with intermittent 12 V battery input. IC Role / Device Role / Timing Role: Regulator with 50 V input rating and dual-drive RESET supporting reliable cold-crank operation down to 4.5 V. Use Value: Eliminates need for external reset supervisor IC; RESET remains valid even if VOUT1 collapses to 0 V during cranking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual sequenced LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV7073325PDRVR | 3.3 V / 2.5 V fixed outputs; 200 mA total output; no power shunt; SOT-563 package (RθJA = 210 °C/W). | Not AEC-Q100 qualified; lacks RESET delay programming and dual-drive RESET; unsuitable for 50 V transients. | Select only for non-automotive, space-constrained designs where 5 V I/O is not required. |
| TPS74901PWP | Dual adjustable LDO (0.8–3.6 V per channel); 500 mA total; no built-in sequencing or RESET; HTSSOP-20 package. | Requires external sequencing circuitry and reset supervisor; higher quiescent current (80 µA vs. 175 µA); no power shunt. | Choose when flexible output voltages are needed and system-level sequencing can be implemented externally. |
Compared with TLV7073325PDRVR and TPS74901PWP, the NCV8509PDW25R2 uniquely integrates automotive-grade sequencing, dual-drive RESET, power shunt, and 50 V input tolerance - eliminating discrete support components and reducing BOM count in safety-critical ECUs.
Availability
NCV8509PDW25R2 is available at Aetrix Electronics and suitable for automotive powertrain control units, telematics gateways, and ADAS camera modules requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for NCV8509PDW25R2 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 electronics for automotive, industrial, cloud, and IoT applications.
The NCV8509PDW25R2 belongs to the NCV8509 Series of sequenced dual LDOs designed specifically for modern automotive microcontrollers requiring independent, protected core and I/O supplies with robust fault handling.
FAQ
What output voltage pair does the NCV8509PDW25R2 provide?
The NCV8509PDW25R2 provides a fixed 5.0 V ±2% output (VOUT1) for microcontroller I/O and a fixed 2.5 V ±2% output (VOUT2) for the core. These values are laser-trimmed at wafer test and confirmed in the Electrical Characteristics table (page 2 of the datasheet) under "VOUT1 Output Voltage" and "VOUT2 Output Voltage" sections.
Does the NCV8509PDW25R2 support programmable power-up sequencing?
Yes, the NCV8509PDW25R2 implements hardware-enforced sequencing via its SLEW pin. A capacitor (e.g., 33 nF) connected to Pin 1 generates a controlled voltage ramp that delays VOUT2 activation until VOUT1 reaches regulation - ensuring I/O powers before core to prevent latch-up. This is detailed in Figure 53 and Section "Slew Rate Control" (page 16).
How does the dual-drive RESET function work on the NCV8509PDW25R2?
The NCV8509PDW25R2 RESET output remains valid down to 0 V on either VIN1 or VOUT1 because it draws drive current from both sources. When VOUT1 collapses, VIN1 sustains RESET; when VIN1 fails, VOUT1 sustains it. This behavior is guaranteed by design (Note 3, page 3) and illustrated in Figure 41 ("Dual Drive RESET Valid").
What is the purpose of the power shunt feature in the NCV8509PDW25R2?
The power shunt routes part of the VOUT2 current path through an external resistor (REX) between VIN1 and VIN2, moving power dissipation off-die. For example, at 18 V input and 100 mA load, it reduces on-chip power by ~1.07 W (Figure 43), improving thermal margin without heatsinks. Operation modes are defined in Figure 50 and equations (5)–(7) (page 14).
Is the NCV8509PDW25R2 qualified for automotive use?
Yes, the NCV8509PDW25R2 carries the NCV prefix indicating AEC-Q100 qualification, PPAP capability, and site/change control for automotive applications. It operates from −40 °C to +125 °C junction temperature and meets stringent automotive reliability standards - explicitly stated in the "Features" section (page 1) and "Ordering Information" (page 17).
NCV8509PDW25R2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 2
- Voltage - Input (Max):
- 50V
- Voltage - Output (Min/Fixed):
- 5V, 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.6V @ 100mA, -
- Current - Output:
- 115mA, 100mA
- Current - Quiescent (Iq):
- 175 µA
- Current - Supply (Max):
- 10 mA
- PSRR:
- -
- Control Features:
- Reset
- Protection Features:
- Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
NCV8509PDW25R2 FAQ
1.How can I place an order for NCV8509PDW25R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8509PDW25R2 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for NCV8509PDW25R2 reliable?
The price and inventory of NCV8509PDW25R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8509PDW25R2 is usually 5 days.
3.What payment methods are accepted for NCV8509PDW25R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8509PDW25R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV8509PDW25R2?
NCV8509PDW25R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8509PDW25R2 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for NCV8509PDW25R2?
For technical support, including NCV8509PDW25R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8509PDW25R2 requirements.
6.How does Aetrix verify that NCV8509PDW25R2 is sourced from the original manufacturer or authorized distributors?
All NCV8509PDW25R2 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that NCV8509PDW25R2 meets industry standards.
7.What is the process for return or replacement of NCV8509PDW25R2?
All NCV8509PDW25R2 units undergo pre-shipment inspection (PSI). If there is an issue with NCV8509PDW25R2, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The NCV8509PDW25R2 part is unused and in its original packaging.
Return procedure for NCV8509PDW25R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NCV8509PDW25R2 Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
