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onsemi NCP3334AMTADJTBG
- Part No.:
- NCP3334AMTADJTBG
- Manufacturer:
- onsemi
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
NCP3334AMTADJTBG.pdf
- Description:
- IC REG LIN POS ADJ 500MA 8WDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,992
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Product details
Overview
NCP3334AMTADJTBG from onsemi is an ultra-high-accuracy, low-quiescent-current, adjustable-output LDO regulator delivering 500 mA with ±0.9% reference voltage accuracy at 25°C, 1.178 V nominal feedback voltage, and dropout as low as 140 mV at 100 mA load. It operates from 2.6 V to 12 V input, requires only 1.0 µF output capacitance, and supports reverse bias protection up to 7 V - ideal for DSP supply and camera power rails.
For engineers reviewing the NCP3334AMTADJTBG datasheet, pinout, applications, or equivalent options, key selection criteria include its no-minimum-load stability, MLCC-compatible compensation, shutdown threshold (0.4 V ON / 2.0 V OFF), thermal shutdown at 160°C, and WDFN8 package thermal resistance of 48°C/W on 4-layer board.
Technical Context
The NCP3334AMTADJTBG uses a precision bandgap reference and error amplifier architecture to achieve ±0.9% line/load accuracy over −40°C to +85°C. Its internal PMOS pass device enables ultra-low dropout and eliminates minimum load requirements.
Reverse bias protection is implemented via dedicated internal circuitry that limits output-to-ground current to <1.0 µA when Vin = 0 V and Vout ≤ 7 V, preventing destructive backfeed. Stability is guaranteed with any capacitor type (including zero-ESR MLCCs) ≥1.0 µF without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 500 mA continuous; supports peak loads up to 860 mA for short durations |
| Reference Voltage | 1.178 V ±0.9% at 25°C; sets adjustable output range from 1.178 V to 10 V via resistor divider |
| Dropout Voltage | 140 mV at 100 mA; enables high-efficiency regulation even at low VIN–VOUT margins |
| Quiescent Current | 6 µA typical at 500 mA load; critical for battery-powered standby operation |
| PSRR | 100 dB at 100 Hz; suppresses input ripple in noise-sensitive analog/DSP supplies |
| Output Noise | 26 µVrms (10 Hz–100 kHz); suitable for low-noise RF and sensor subsystems |
| Shutdown Current | 1.5 µA max; ensures minimal system leakage during deep sleep modes |
Pinout & Package
Package: WDFN8 (3 mm × 3 mm, 0.5 mm pitch), thermally enhanced with exposed EPAD electrically isolated from die and intended for connection to GND or VIN.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 - VOUT | Regulated output terminal | Delivers stable output; bypassed directly with ≥1.0 µF capacitor to GND |
| 3 - FB | Feedback input | Connects to resistor divider midpoint; senses 1.178 V reference to set output voltage |
| 4 - NC | No-connect terminal | Must remain unconnected; no internal connection or function |
| 5 - GND | Power ground | Primary return path for load and internal circuitry; ties to EPAD for thermal performance |
| 6 - SD | Shutdown control | Active-low enable: <0.4 V = ON, >2.0 V = OFF; draws ≤3.0 µA in all states |
| 7, 8 - VIN | Input supply | Dual pins reduce IR drop and improve transient response; accepts 2.6–12 V |
Key Features
| Feature | Design Value |
|---|---|
| No minimum load requirement | Stable down to 0 mA output - eliminates dummy load resistors in low-power sleep modes |
| Any-capacitor stability | Works with ceramic (MLCC), tantalum, or polymer caps ≥1.0 µF - no ESR constraints or damping networks needed |
| Reverse bias protection | Blocks destructive backfeed when VIN = 0 V and VOUT ≤ 7 V - protects upstream sources and prevents latch-up |
| Ultra-low noise | 26 µVrms output noise enables clean power for ADCs, PLLs, and RF front-ends without extra filtering |
| Thermal shutdown | 160°C junction limit with automatic recovery - prevents permanent damage during overload or poor heatsinking |
Applications
| Telecom Power Rails | Camera Sensor Supplies |
|---|---|
Use Scenario: Powering baseband processors and RF transceivers in cellular base stations where input voltage varies widely and standby current must be minimized. IC Role / Device Role / Timing Role: Primary LDO regulator providing clean, adjustable 1.2–3.3 V supply with <6 µA quiescent current and 100 dB PSRR at 100 Hz. Use Value: Enables extended idle battery life and reduces conducted EMI into sensitive RF sections without external LC filters. | Use Scenario: Supplying image sensors and ISP cores in camcorders where fast load transients and low noise are critical to avoid image artifacts. IC Role / Device Role / Timing Role: Low-noise, fast-response LDO delivering 1.8 V or 2.8 V with 140 mV dropout and 26 µVrms noise. Use Value: Prevents pixel noise and frame jitter during burst capture by maintaining regulation during 100 mA step loads with <10 µs recovery. |
| DSP Core Voltage | Set-Top Box AVDD |
Use Scenario: Generating precise core voltage for digital signal processors in DSL modems, requiring tight tolerance and immunity to input ripple. IC Role / Device Role / Timing Role: Adjustable LDO with ±0.9% reference accuracy and 0.04 mV/V line regulation, set to 1.2 V using external resistors. Use Value: Ensures deterministic DSP timing and avoids bit errors caused by supply-induced clock jitter or logic threshold shifts. | Use Scenario: Providing stable 3.3 V AVDD rail for video DACs and HDMI PHYs in cable set-top boxes subject to noisy 12 V DC input. IC Role / Device Role / Timing Role: High-PSRR LDO rejecting switching noise from upstream DC/DC converters while supporting 500 mA peak video loads. Use Value: Eliminates visible horizontal banding and audio pop/click by suppressing 100 kHz–1 MHz ripple below 10 µV at output. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6210B122MR-G | Fixed 1.2 V output; 150 mV dropout at 300 mA; 2.0 µA IQ; no reverse bias protection | Lacks adjustability and reverse bias protection; suited only for fixed-voltage, low-IQ designs | Select when output voltage is fixed and reverse feed risk is absent; not suitable for adjustable or backfeed-prone systems |
| Richtek RT9013-12GB | Fixed 1.2 V; 250 mV dropout at 500 mA; 45 µA IQ; no SD pin or thermal shutdown | Higher quiescent current and missing safety features limit use in battery or thermally constrained apps | Choose only for cost-sensitive, non-critical fixed-VOUT applications with ample thermal margin and no shutdown requirement |
Compared with Torex XC6210B122MR-G and Richtek RT9013-12GB, the NCP3334AMTADJTBG uniquely combines adjustability, reverse bias protection, sub-10 µA quiescent current, and guaranteed stability with MLCCs - making it the only option among the three qualified for DSP core and camera sensor rails demanding both precision and robustness.
Availability
NCP3334AMTADJTBG is available at Aetrix Electronics and suitable for telecom infrastructure, imaging systems, and embedded DSP applications requiring stable component supply, long-term lifecycle support, and Pb-free compliance.
Supply support for NCP3334AMTADJTBG 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 delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and edge applications.
The NCP3334AMTADJTBG belongs to onsemi's high-accuracy LDO family designed specifically for noise-sensitive, low-power consumer and communications equipment requiring ±0.9% regulation and zero-load stability.
FAQ
What is the minimum output capacitance required for stability of the NCP3334AMTADJTBG?
The NCP3334AMTADJTBG requires only 1.0 µF output capacitance for guaranteed stability - with any capacitor type including MLCCs, tantalum, or polymer. No minimum ESR is specified, and larger values improve transient response and noise rejection. This eliminates need for external compensation networks or damping resistors.
Does the NCP3334AMTADJTBG require a minimum load current to maintain regulation?
No, the NCP3334AMTADJTBG is explicitly designed to remain stable with zero output load current. This feature removes the need for dummy load resistors in battery-powered or ultra-low-power standby modes, directly reducing system power consumption and simplifying design.
How does reverse bias protection work in the NCP3334AMTADJTBG?
The NCP3334AMTADJTBG incorporates dedicated internal circuitry that blocks current flow from VOUT to VIN when VIN = 0 V and VOUT ≤ 7 V. Under this condition, output-to-ground current remains below 1.0 µA indefinitely - preventing damage to upstream sources and avoiding latch-up in multi-rail systems.
What is the shutdown behavior of the NCP3334AMTADJTBG?
The NCP3334AMTADJTBG features an active-low shutdown pin (SD). Pulling SD below 0.4 V enables regulation; pulling above 2.0 V disables output and reduces total current draw to ≤1.5 µA. SD input current stays below 3.0 µA across full voltage range, enabling direct GPIO control without level-shifting.
Can the NCP3334AMTADJTBG be used with ceramic capacitors only?
Yes - the NCP3334AMTADJTBG is fully stable with ceramic (MLCC) capacitors as small as 1.0 µF and zero ESR. Unlike many LDOs, it imposes no minimum ESR requirement or damping network, simplifying layout and reducing BOM count while maintaining phase margin >60° across temperature and load.
NCP3334AMTADJTBG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 12V
- Voltage - Output (Min/Fixed):
- 1.178V
- Voltage - Output (Max):
- 10V
- Voltage Dropout (Max):
- 0.34V @ 500mA
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 180 µA
- Current - Supply (Max):
- 10 mA
- PSRR:
- -
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WDFN (3x3)
NCP3334AMTADJTBG FAQ
1.How can I place an order for NCP3334AMTADJTBG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP3334AMTADJTBG 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 NCP3334AMTADJTBG reliable?
The price and inventory of NCP3334AMTADJTBG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP3334AMTADJTBG is usually 5 days.
3.What payment methods are accepted for NCP3334AMTADJTBG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP3334AMTADJTBG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP3334AMTADJTBG?
NCP3334AMTADJTBG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP3334AMTADJTBG 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 NCP3334AMTADJTBG?
For technical support, including NCP3334AMTADJTBG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP3334AMTADJTBG requirements.
6.How does Aetrix verify that NCP3334AMTADJTBG is sourced from the original manufacturer or authorized distributors?
All NCP3334AMTADJTBG 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 NCP3334AMTADJTBG meets industry standards.
7.What is the process for return or replacement of NCP3334AMTADJTBG?
All NCP3334AMTADJTBG units undergo pre-shipment inspection (PSI). If there is an issue with NCP3334AMTADJTBG, 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 NCP3334AMTADJTBG part is unused and in its original packaging.
Return procedure for NCP3334AMTADJTBG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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