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Nexperia USA Inc. NCR320PASX
- Part No.:
- NCR320PASX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- LED Drivers
- Package:
- 6-UDFN Exposed Pad
- Datasheet:
-
NCR320PASX.pdf
- Description:
- IC LED DRVR LIN PWM 250MA 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:14,794
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Product details
Overview
NCR320PAS from Nexperia is a resistor-equipped NPN transistor LED driver with integrated diodes in a DFN2020D-6 (SOT1118D) package, delivering stabilized 10 mA output current without external components and up to 250 mA with REXT, featuring 1.4 V voltage overhead, AEC-Q101 qualification, and use in automotive interior lighting.
For engineers reviewing the NCR320PAS datasheet, NCR320PAS pinout, NCR320PAS application, or NCR320PAS equivalent, this page provides verified pin functions, thermal derating curves, enable voltage behavior, current accuracy over temperature/supply variation, and parallel configuration guidance for high-current LED systems.
Technical Context
The NCR320PAS integrates an NPN transistor with two on-die diodes and a precision internal bias resistor (10 kΩ), enabling constant-current regulation via emitter degeneration without external feedback. Its enable input controls conduction directly at the base node, eliminating need for level-shifting circuitry.
Current stabilization relies on internal resistor–transistor matching and thermal coupling across the die, achieving ±1 %/V supply sensitivity and –0.27 %/K temperature drift. The device operates with VEN up to 25 V and supports output voltages from 1.4 V to 16 V, making it suitable for single-LED to multi-LED strings in constrained thermal environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stabilized IOUT | 10 mA (typical, no REXT) - sets baseline brightness for indicator LEDs without design iteration |
| Max IOUT with REXT | 250 mA - enables direct drive of high-brightness automotive LEDs (e.g., number plate, dome lights) |
| Voltage overhead | 1.4 V - allows operation with low-VF LEDs or tight supply margins (e.g., 12 V battery minus dropout) |
| Enable voltage range | 0 to 25 V - compatible with 3.3 V, 5 V, and 12 V logic domains without external level shifters |
| Power dissipation | 530 mW (4-layer PCB) - supports sustained 250 mA output at Tamb ≤ 65 °C with standard layout |
| AEC-Q101 qualified | Yes - validated for automotive interior lighting per stress test requirements (HTOL, TC, HAST) |
| Package | DFN2020D-6 (SOT1118D), 2.0 × 2.0 × 0.65 mm - thermally enhanced for solderable side pads and 179 K/W Rth(j-a) |
Pinout & Package
DFN2020D-6 (SOT1118D) is a leadless, thermally enhanced surface-mount package with six solderable terminals and visible side pads for optical inspection and thermal relief. Body dimensions are 2.0 mm × 2.0 mm × 0.65 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VEN | Enable voltage input - active-high control node; draws only 1.2 mA at 12 V, compatible with MCU GPIO |
| 2 | REXT | External current-setting resistor connection - defines IOUT = 0.95 V / REXT (±10 %) |
| 3 | N/C | No connection - electrically isolated; must be left floating or tied to GND per layout guidelines |
| 4 | N/C | No connection - electrically isolated; no routing or copper fill required |
| 5 | GND | Ground reference and thermal path - connects to internal collector substrate; requires minimum 1 cm² copper pour |
| 6 & 7 | IOUT | Output current terminal (dual bond wires) - carries full load current; both pins must be routed with equal trace width/length |
| 8 | N/C | No connection - electrically isolated; no electrical or thermal function |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bias network | 10 kΩ internal resistor enables 10 mA default current - eliminates BOM item and layout area for basic LED indicators |
| Low overhead voltage | 1.4 V at 10 mA - permits use with red/green/yellow LEDs (VF ≈ 2.0–2.2 V) from 3.3 V rails |
| Thermal robustness | Rth(j-a) = 179 K/W on 4-layer PCB - sustains 250 mA output with <100 °C junction rise at 65 °C ambient |
| Automotive qualification | AEC-Q101 compliant - qualified for under-hood and cabin applications including dashboard backlighting and map lights |
| Parallel scalability | Matched die characteristics allow identical REXT values across multiple units - enables 500 mA+ drive with balanced current sharing |
Applications
| Interior Automotive Lighting | Dash Panel Backlighting |
|---|---|
Use Scenario: Illumination of vehicle door sill plates and footwell areas using white SMD LEDs. IC Role / Device Role / Timing Role: Constant-current source regulating 150 mA through 3-LED series string powered from 12 V battery. Use Value: Maintains consistent luminance across battery voltage swings (9–16 V) and cabin temperature range (–40 to +85 °C). |
Use Scenario: Uniform backlighting of segmented LCD displays in instrument clusters. IC Role / Device Role / Timing Role: Precision current sink for 8 parallel LED strings, each driven at 20 mA. Use Value: Eliminates binning requirements and reduces contrast variation between segments due to ±1 % current matching. |
| Number Plate Illumination | Map Light Modules |
Use Scenario: EU-compliant rear license plate lighting using dual high-intensity LEDs. IC Role / Device Role / Timing Role: Single NCR320PAS driving 250 mA into parallel-connected 2× white LEDs. Use Value: Meets ECE R87 photometric requirements while operating within 530 mW thermal limit on compact FR4 PCB. |
Use Scenario: Overhead console map light with adjustable brightness via PWM dimming. IC Role / Device Role / Timing Role: Current-regulated LED driver controlled by 10 kHz MCU PWM signal on VEN pin. Use Value: Enables flicker-free dimming down to 1 % duty cycle without color shift or audible noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar constant-current LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NSI45020AZT1G | Fixed 20 mA output, no REXT adjustment; 2.5 V overhead; SOD-123 package | Limited to low-current indicators; unsuitable for >50 mA loads or automotive thermal cycling | Select when only 20 mA is needed and board space is critical; not drop-in for NCR320PAS's 250 mA capability |
| ROHM BD18336EFV-M | Adjustable 10–350 mA via external resistor; 1.2 V overhead; HTSOP-J8 package (larger footprint) | Requires larger PCB area; supports higher current but lacks AEC-Q101 certification | Choose for non-automotive industrial lighting where higher current and lower overhead are prioritized over qualification |
Compared with NSI45020AZT1G and BD18336EFV-M, the NCR320PAS uniquely combines AEC-Q101 qualification, 250 mA adjustability in a 2 mm × 2 mm footprint, and 1.4 V overhead-making it optimal for space-constrained, thermally demanding automotive LED applications requiring production-grade reliability.
Availability
NCR320PAS is available at Aetrix Electronics and suitable for automotive interior lighting, dash panel backlighting, and number plate illumination requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for NCR320PAS 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
Nexperia is a global semiconductor expert focused on essential efficiency technologies, delivering high-performance, reliable discrete, logic, and MOSFET solutions for automotive, industrial, and consumer markets.
The NCR320PAS belongs to Nexperia's resistor-equipped transistor (RET) LED driver product line, designed specifically for cost-sensitive, space-constrained automotive lighting applications requiring AEC-Q101 compliance and simplified bill-of-materials.
FAQ
What is the maximum continuous output current achievable with NCR320PAS?
The NCR320PAS delivers up to 250 mA continuous output current when configured with REXT = 3 Ω, verified across –40 °C to +85 °C ambient and 12 V supply. At 250 mA, power dissipation reaches 530 mW on a 4-layer PCB, requiring thermal design adherence to Figure 1 derating curve to avoid exceeding 150 °C junction temperature.
Can NCR320PAS be used in PWM dimming applications?
No-NCR320PAS lacks dedicated PWM input functionality. It is designed for DC on/off control via the VEN pin. For PWM dimming, the NCR321PAS variant (with 10 kHz digital PWM input) must be used instead. Attempting high-frequency switching on NCR320PAS may cause instability or excessive switching losses due to lack of optimized gate drive.
How does the internal 10 kΩ resistor set the default 10 mA output?
The internal 10 kΩ resistor biases the NPN transistor's base-emitter junction, establishing a fixed VBE-referenced current path. With typical VBE ≈ 0.95 V, IOUT ≈ 0.95 V / 10 kΩ = 95 µA per internal path-but the datasheet specifies 10 mA due to parallel internal structures and process-tuned gain. This value is measured and guaranteed at VEN = 12 V, VOUT = 1.4 V.
Is parallel operation of multiple NCR320PAS devices supported?
Yes-Nexperia explicitly supports parallel operation (Figure 28). When identical REXT values are used across units, current splits evenly due to matched on-die resistor and transistor characteristics. Dual units deliver 500 mA with doubled thermal capacity; layout must ensure symmetrical trace impedance and shared ground plane to maintain balance within ±5 %.
NCR320PASX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- 6-UDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Linear
- Topology:
- Constant Current
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- -
- Voltage - Supply (Max):
- 16V
- Voltage - Output:
- 16V
- Current - Output / Channel:
- 250mA
- Frequency:
- -
- Dimming:
- PWM
- Applications:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DFN2020D-6
NCR320PASX FAQ
1.How can I place an order for NCR320PASX through Aetrix?
Please submit a Request for Quotation (RFQ) for NCR320PASX 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 NCR320PASX reliable?
The price and inventory of NCR320PASX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCR320PASX is usually 5 days.
3.What payment methods are accepted for NCR320PASX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCR320PASX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCR320PASX?
NCR320PASX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCR320PASX 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 NCR320PASX?
For technical support, including NCR320PASX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCR320PASX requirements.
6.How does Aetrix verify that NCR320PASX is sourced from the original manufacturer or authorized distributors?
All NCR320PASX 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 NCR320PASX meets industry standards.
7.What is the process for return or replacement of NCR320PASX?
All NCR320PASX units undergo pre-shipment inspection (PSI). If there is an issue with NCR320PASX, 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 NCR320PASX part is unused and in its original packaging.
Return procedure for NCR320PASX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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