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onsemi NCP3335ADM500R2G
- Part No.:
- NCP3335ADM500R2G
- Manufacturer:
- onsemi
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
NCP3335ADM500R2G.pdf
- Description:
- IC REG LINEAR 5V 500MA MICRO8
- Quantity:
- Payment:
- Shipping:
Inventory:4,215
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Product details
Overview
NCP3335ADM500R2G from onsemi is a fixed-output 5.0 V, 500 mA ultra-high-accuracy low-dropout regulator with ±0.9% output voltage accuracy over line/load/temperature, 260 mV typical dropout at full load, and 31 µVRMS output noise (with 10 nF CNR). It delivers stable regulation for DSP supplies, camera modules, and DSL modems without minimum load or capacitor type restrictions.
For engineers reviewing the NCP3335ADM500R2G datasheet, pinout, applications, or equivalent options, key selection criteria include guaranteed stability with 1.0 µF MLCC output capacitance, reverse bias protection up to 7 V, shutdown current of 0.07 µA, and thermal shutdown at 160 °C - all in an 8-pin Micro8 package.
Technical Context
The NCP3335ADM500R2G employs a PMOS pass transistor architecture enabling ultra-low dropout and no minimum load requirement. Its internal reference achieves ±0.9% accuracy at 25 °C and ±1.4% across 0–85 °C, supported by dedicated SENSE and NR pins for precision feedback and noise reduction.
It integrates reverse bias protection that limits output-to-ground current to 10 µA when VIN = 0 V and VOUT = 5.0 V, and features active thermal shutdown and current limiting. The device operates across a 2.6–12 V input range and supports output voltages from 1.5 V to 5.0 V in fixed versions or adjustable via external resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±0.9% at 25 °C; ±1.4% over 0–85 °C - enables precise power rail for sensitive analog/digital ICs without post-regulation trimming. |
| Max Output Current | 500 mA continuous - sufficient for powering single-core DSPs, image sensors, or modem baseband processors. |
| Dropout Voltage | 340 mV typ. at 500 mA - allows operation from 5.4 V input to maintain 5.0 V output under full load, minimizing power loss. |
| Quiescent Current | 9.0 mA in regulation, 0.07 µA in shutdown - extends battery life in portable devices during sleep modes. |
| Output Noise | 31 µVRMS (10 Hz–100 kHz, with 10 nF CNR) - meets low-noise requirements for ADC references and RF front-end biasing. |
| Stability | Guaranteed stable with ≥1.0 µF output capacitance of any dielectric (including X5R/X7R MLCC) - eliminates need for tantalum or electrolytic capacitors. |
| Protection | Thermal shutdown (160 °C), current limit, and reverse bias protection (VOUT−VIN ≤ 7 V) - prevents damage during hot-swap or backup-capacitor discharge events. |
Pinout & Package
Package: Micro8 (Case 846A), 8-pin surface-mount with exposed thermal pad (EPAD) requiring PCB ground connection for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | VOUT | Regulated 5.0 V output; must be bypassed to GND with ≥1.0 µF capacitor for stability. |
| 3 | SENSE | High-impedance feedback node; connects directly to Pins 1 & 2 for remote sensing and improved load regulation. |
| 4 | GND | Power supply ground reference; EPAD must also be connected to this net for thermal dissipation. |
| 5 | NR | Noise reduction pin; connect 10 nF capacitor to GND to reduce output noise by ~30 µVRMS. |
| 6 | SD | Active-low shutdown control; driven low to disable regulator and reduce IQ to 0.07 µA. |
| 7, 8 | VIN | Input supply (2.6–12 V); requires local 1.0 µF ceramic decoupling capacitor near these pins. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-high accuracy | ±0.9% output voltage tolerance at 25 °C enables direct replacement of higher-cost precision regulators in test equipment and medical sensors. |
| No minimum load requirement | Stable down to 0 mA output current - simplifies design for intermittent-load applications like wake-on-RF receivers. |
| Capacitor flexibility | Compatible with low-ESR MLCCs as small as 1.0 µF - reduces board area and cost vs. legacy LDOs requiring 10–22 µF tantalum. |
| Reverse bias protection | Blocks >99.9% of reverse current when VIN = 0 V and VOUT = 5.0 V - prevents backfeeding and system-level latch-up in multi-rail systems. |
| Low-noise architecture | 31 µVRMS noise with CNR enables clean power for 16-bit ADCs and low-phase-noise PLLs without additional filtering. |
Applications
| PCMCIA Card Power | Cellular Phone Baseband |
|---|---|
Use Scenario: Powering PCMCIA card logic and interface circuitry from a shared 5 V bus with variable load and hot-plug events. IC Role / Device Role / Timing Role: Primary 5.0 V LDO delivering regulated supply to card controller and I/O buffers. Use Value: Reverse bias protection prevents backfeed into host system during insertion/removal; 1.0 µF MLCC compatibility reduces card thickness. | Use Scenario: Supplying baseband processor core voltage in dual-mode GSM/UMTS handsets with aggressive power cycling. IC Role / Device Role / Timing Role: Standby-mode LDO providing always-on 5.0 V rail for real-time clock and wake-up logic. Use Value: 0.07 µA shutdown current extends standby time; ±0.9% accuracy ensures reliable brown-out detection thresholds. |
| DSP Audio Processing | DSL/Cable Modem PHY |
Use Scenario: Powering high-fidelity audio DSPs in portable media players where EMI-sensitive analog stages share the same PCB. IC Role / Device Role / Timing Role: Low-noise 5.0 V supply for DSP core and ADC/DAC reference rails. Use Value: 31 µVRMS noise (with CNR) maintains >95 dB SNR; SENSE pin enables <0.04 mV/mA load regulation for dynamic workloads. | Use Scenario: Regulating 5.0 V for DSL line driver and analog front-end in residential broadband gateways operating 24/7. IC Role / Device Role / Timing Role: Main system LDO supplying PHY, microcontroller, and memory interfaces. Use Value: Thermal shutdown at 160 °C prevents failure under sustained 500 mA load; 260 mV dropout maximizes efficiency at 5.4 V input. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A4700RGWR | 20 V max input, 1 µVRMS noise, but 1 A max output and higher cost; requires 2.2 µF minimum COUT. | Better for ultra-low-noise analog signal chains; less suitable for cost-sensitive consumer modems. | Select only if sub-µV noise and >12 V input are required; otherwise NCP3335ADM500R2G offers better cost/performance balance. |
| MCP1703T-5002E/MB | 500 mA, 5.0 V fixed, ±2% accuracy, 6 µA quiescent current, but no SENSE/NR pins and no reverse bias protection. | Suitable for basic digital loads; not recommended for systems with hot-swap or backup capacitors. | Choose for simple, low-cost applications without precision or protection needs; avoid where ±0.9% accuracy or reverse bias safety is critical. |
Compared with TPS7A4700RGWR and MCP1703T-5002E/MB, the NCP3335ADM500R2G uniquely combines ±0.9% accuracy, reverse bias protection, and 1.0 µF MLCC stability - making it optimal for space-constrained, safety-critical consumer electronics where reliability and BOM simplicity are prioritized over ultra-low noise or wide-input-range operation.
Availability
NCP3335ADM500R2G is available at Aetrix Electronics and suitable for DSL modems, cellular baseband subsystems, and portable DSP audio systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for NCP3335ADM500R2G 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 (Nasdaq: ON) is a global semiconductor leader delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCP3335A product line targets high-accuracy, low-noise power management in portable and networked consumer electronics - emphasizing stability with minimal external components and robust protection against real-world fault conditions.
FAQ
What is the output voltage tolerance of the NCP3335ADM500R2G over temperature?
The NCP3335ADM500R2G maintains ±1.4% output voltage accuracy across the 0 °C to +85 °C operating range and ±1.5% from −40 °C to +125 °C. At 25 °C, its tolerance tightens to ±0.9%, verified per onsemi's Electrical Characteristics table for the 5.0 V version. This level of precision eliminates need for external calibration in most consumer-grade applications.
Can the NCP3335ADM500R2G operate with a 1.0 µF ceramic output capacitor?
Yes, the NCP3335ADM500R2G is explicitly guaranteed stable with any 1.0 µF capacitor, including X5R/X7R MLCCs - no ESR requirements or damping networks needed. This is confirmed in the datasheet's "Features" and "Stability with ESR vs. Iout" (Figure 27), where the stable region includes 1.0 µF at 500 mA with zero minimum ESR.
Does the NCP3335ADM500R2G provide reverse current protection?
Yes, the NCP3335ADM500R2G includes integrated reverse bias protection that limits reverse current to 10 µA when VIN = 0 V and VOUT is forced to 5.0 V. This feature is valid as long as VOUT − VIN ≤ 7 V, preventing backfeed damage during hot-swap or capacitor discharge scenarios.
What is the shutdown current specification for the NCP3335ADM500R2G?
The NCP3335ADM500R2G draws only 0.07 µA in shutdown mode (SD = 0 V), as specified in the "Electrical Characteristics – 5.0 V" table. This ultra-low value is measured at VIN = 5.4 V and TA = 25 °C, and remains consistent across temperature - critical for battery-powered devices requiring multi-week standby duration.
How does the SENSE pin improve regulation in the NCP3335ADM500R2G?
The SENSE pin on the NCP3335ADM500R2G provides Kelvin sensing of the output voltage at the load, compensating for IR drop across PCB traces. When connected directly to VOUT pins 1 and 2, it improves load regulation to 0.04 mV/mA (per datasheet), reducing output deviation under dynamic current steps - essential for high-precision analog circuits powered remotely from the regulator.
NCP3335ADM500R2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.34V @ 500mA
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 190 µA
- Current - Supply (Max):
- 14 mA
- PSRR:
- -
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
NCP3335ADM500R2G FAQ
1.How can I place an order for NCP3335ADM500R2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP3335ADM500R2G 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 NCP3335ADM500R2G reliable?
The price and inventory of NCP3335ADM500R2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP3335ADM500R2G is usually 5 days.
3.What payment methods are accepted for NCP3335ADM500R2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP3335ADM500R2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP3335ADM500R2G?
NCP3335ADM500R2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP3335ADM500R2G 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 NCP3335ADM500R2G?
For technical support, including NCP3335ADM500R2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP3335ADM500R2G requirements.
6.How does Aetrix verify that NCP3335ADM500R2G is sourced from the original manufacturer or authorized distributors?
All NCP3335ADM500R2G 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 NCP3335ADM500R2G meets industry standards.
7.What is the process for return or replacement of NCP3335ADM500R2G?
All NCP3335ADM500R2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP3335ADM500R2G, 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 NCP3335ADM500R2G part is unused and in its original packaging.
Return procedure for NCP3335ADM500R2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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