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onsemi NCP703MX30TCG
- Part No.:
- NCP703MX30TCG
- Manufacturer:
- onsemi
- Package:
- 6-XFDFN
- Datasheet:
-
NCP703MX30TCG.pdf
- Description:
- IC REG LINEAR 3V 300MA 6XDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,399
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Product details
Overview
NCP703MX30TCG from onsemi is a 300 mA, fixed 3.0 V output ultra-low-noise LDO voltage regulator designed for noise-sensitive RF and precision analog circuits. It delivers ±2% output accuracy over load/line/temperature, 180 mV typical dropout at 300 mA, 13 µVRMS output noise (100 Hz–100 kHz), and 68 dB PSRR at 1 kHz - enabling clean power delivery in satellite radios, infotainment systems, and portable medical equipment.
For engineers reviewing the NCP703MX30TCG datasheet, pinout, applications, or equivalent options, key selection criteria include its 12 µA quiescent current at no load, active output discharge, EN-controlled shutdown with 120 nA disable current, stability with only 1 µF ceramic output capacitor, and XDFN-6 1.5×1.5 mm package for space-constrained portable designs.
Technical Context
The NCP703MX30TCG employs a PMOS pass transistor architecture with adaptive ground current management to maintain ultra-low IQ across light-load conditions while preserving fast transient response. Its internal soft-start limits inrush current, and integrated thermal shutdown (160°C) with 20°C hysteresis ensures robust operation under overload.
It features an enable input with 0.9 V turn-on threshold and 0.4 V turn-off threshold, internal undervoltage lockout (~1.6 V enable, ~1.2 V disable), and active discharge via a 320 Ω internal resistor when disabled - eliminating external discharge circuitry in battery-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0 V ±2% - tightly regulated for powering 3.0 V logic, RF front-ends, and precision ADCs without external feedback. |
| Max Output Current | 300 mA continuous - sufficient for baseband processors, Bluetooth/WLAN SoCs, and sensor signal chains in handheld devices. |
| Quiescent Current | 12 µA typ. at no load - extends battery life in always-on wearable and IoT edge nodes. |
| Output Noise | 13 µVRMS (100 Hz–100 kHz) - eliminates need for external noise-bypass capacitor in RF PA biasing. |
| PSRR | 68 dB at 1 kHz - suppresses switching noise from adjacent DC-DC converters feeding mixed-signal subsystems. |
| Dropout Voltage | 180 mV typ. at 300 mA - enables operation down to 3.18 V input, supporting single-cell Li-ion (3.0–4.2 V) applications. |
| Enable Threshold | 0.9 V high / 0.4 V low - compatible with 1.8 V and 3.3 V GPIOs; internal 110 nA pull-down ensures default-off state. |
Pinout & Package
Package: XDFN-6 (1.5 mm × 1.5 mm, 0.5 mm height, wettable flank), Pb-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input supply connection | Accepts 2.0–5.5 V input; requires ≥1 µF ceramic capacitor close to pin for stability and noise filtering. |
| 2 (EN) | Logic-enable control | Drives high (>0.9 V) to activate regulator; low (<0.4 V) disables output and engages active discharge. |
| 3 (N/C) | No-connect terminal | Internally unconnected; may be tied to GND to improve thermal dissipation without electrical impact. |
| 4 (OUT) | Regulated output | Delivers stable 3.0 V; must connect ≥1 µF X7R/X5R ceramic capacitor directly to GND for guaranteed stability. |
| 5 (GND) | Power ground reference | Die ground connected to exposed pad; soldering pad to PCB copper plane enhances thermal performance (θJA = 146°C/W). |
| 6 (N/C) | No-connect terminal | Internally unconnected; not electrically functional but contributes to mechanical symmetry and thermal path. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise without bypass cap | 13 µVRMS noise achieved with only 1 µF COUT, reducing BOM count and PCB area vs. legacy LDOs requiring CNR. |
| Dynamic IQ management | 12 µA IQ at zero load rising to 200 µA at 300 mA - minimizes standby power while maintaining full-load regulation integrity. |
| Active output discharge | 320 Ω internal discharge path pulls VOUT to GND in <1 ms after EN deactivation - prevents floating outputs and ensures deterministic system reset. |
| Stable with minimal capacitance | Guaranteed stability with 0.1 µF effective COUT - accommodates DC-bias derating of small-case ceramics (e.g., 0402 1 µF X7R). |
| Integrated protection | Thermal shutdown (160°C), current limit (~490 mA), and UVLO (~1.6 V) - eliminate need for external fault-handling circuitry. |
Applications
| Satellite Radio Power Amplifier | Portable Medical ECG Front-End |
|---|---|
Use Scenario: Powers RF power amplifier stage in compact satellite radio receivers where supply ripple directly modulates carrier phase. IC Role / Device Role / Timing Role: Ultra-low-noise 3.0 V bias supply for GaAs FET PA; replaces discrete RC filters + standard LDOs. Use Value: 13 µVRMS noise and 68 dB PSRR suppress AM-to-PM distortion, improving adjacent-channel leakage ratio (ACLR) by >8 dB vs. conventional LDOs. | Use Scenario: Supplies analog front-end (AFE) and 24-bit delta-sigma ADC in handheld ECG monitors operating from coin-cell batteries. IC Role / Device Role / Timing Role: Precision 3.0 V reference-grade supply for low-noise instrumentation amplifiers and ADC reference buffers. Use Value: ±2% accuracy and 6 mV load regulation ensure <0.01% gain error across 0–300 mA load swing, meeting AAMI EC11 clinical accuracy requirements. |
| Bluetooth LE Audio Earbud SoC | GPS/GLONASS Receiver Baseband |
Use Scenario: Powers dual-core Bluetooth LE audio SoC (e.g., CSR8675) in true wireless stereo earbuds with tight thermal and size constraints. IC Role / Device Role / Timing Role: Primary 3.0 V domain regulator for CPU, DSP, and BLE radio; controlled via host MCU GPIO. Use Value: 12 µA IQ extends shelf life during storage; 180 mV dropout enables >92% battery utilization from 3.0 V cutoff; XDFN-6 footprint fits 3.5×3.5 mm PCB area. | Use Scenario: Supplies GPS/GLONASS baseband processor and correlator ASIC in automotive telematics modules requiring cold-cranking resilience. IC Role / Device Role / Timing Role: Stable 3.0 V rail for GNSS correlation engines and low-jitter clock generation circuitry. Use Value: 2.0–5.5 V input range tolerates 6 V cold-crank transients; 100 Hz–10 MHz PSRR profile suppresses alternator ripple and ignition noise, reducing position drift by >15 m. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6210B302MR-G | 300 mA, 3.0 V fixed, 25 µA IQ, 25 µVRMS noise, SOT-25 package (2.9×2.8 mm) | Larger footprint; higher noise requires 2.2 µF COUT; no active discharge | Preferred when cost sensitivity outweighs board space and discharge requirements. |
| Richtek RT9080-30GB | 300 mA, 3.0 V fixed, 20 µA IQ, 20 µVRMS noise, DFN-6 (2.0×2.0 mm) | 2× larger package; 300 mV dropout at 300 mA; no UVLO or thermal hysteresis spec | Selected for legacy DFN-6 layout compatibility where 180 mV dropout is non-critical. |
Compared with XC6210B302MR-G and RT9080-30GB, the NCP703MX30TCG offers the lowest noise (13 µVRMS) and dropout (180 mV) in the smallest footprint (1.5×1.5 mm), with integrated active discharge and tighter thermal hysteresis - making it optimal for next-gen ultra-portable RF and medical devices demanding minimal solution size and highest signal integrity.
Availability
NCP703MX30TCG is available at Aetrix Electronics and suitable for satellite radio, portable medical instrumentation, Bluetooth LE audio, and GPS receiver applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for NCP703MX30TCG 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 NCP703MX30TCG belongs to onsemi's high-performance LDO portfolio, engineered specifically for ultra-low-noise, ultra-low-IQ power delivery in battery-operated RF and precision analog systems.
FAQ
What is the maximum input voltage rating for the NCP703MX30TCG?
The NCP703MX30TCG has an absolute maximum input voltage rating of 6 V, with recommended operating range from 2.0 V to 5.5 V. Exceeding 6 V risks permanent damage per the Absolute Maximum Ratings table. For reliable operation in automotive cold-crank environments, design margins should keep VIN ≤ 5.5 V during transients.
Does the NCP703MX30TCG require an external noise-bypass capacitor?
No, the NCP703MX30TCG achieves 13 µVRMS output noise (100 Hz–100 kHz) without any external noise-bypass capacitor (CNR). This is enabled by its internal low-noise bandgap and PMOS pass structure - confirmed in the datasheet's "Features" and Figure 3–6 noise spectral density plots.
What is the thermal resistance (θJA) of the NCP703MX30TCG in its XDFN-6 package?
The NCP703MX30TCG in XDFN-6 package has a typical junction-to-ambient thermal resistance (θJA) of 146°C/W when mounted on a 1 oz FR4 PCB with 645 mm² copper area. With 2 oz copper, θJA improves to ~110°C/W - values specified in Table 3 and Figure 51 of the datasheet.
How does the enable (EN) pin function on the NCP703MX30TCG?
The EN pin on the NCP703MX30TCG provides logic-level control: voltage >0.9 V enables regulation and disables active discharge; voltage <0.4 V disables regulation and activates 320 Ω output discharge. An internal 110 nA pull-down ensures safe default-off state if left floating - detailed in Table 1 and Applications Information section.
Can the NCP703MX30TCG operate with no load connected to its output?
Yes, the NCP703MX30TCG remains stable and maintains ±2% output voltage accuracy even with zero load current - explicitly stated in the "No-load Operation" subsection of the Applications Information section and verified in Figure 14–16 output voltage vs. temperature curves.
NCP703MX30TCG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 6-XFDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.3V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 20 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Soft Start, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-XDFN (1.5x1.5)
NCP703MX30TCG FAQ
1.How can I place an order for NCP703MX30TCG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP703MX30TCG 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 NCP703MX30TCG reliable?
The price and inventory of NCP703MX30TCG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP703MX30TCG is usually 5 days.
3.What payment methods are accepted for NCP703MX30TCG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP703MX30TCG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP703MX30TCG?
NCP703MX30TCG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP703MX30TCG 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 NCP703MX30TCG?
For technical support, including NCP703MX30TCG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP703MX30TCG requirements.
6.How does Aetrix verify that NCP703MX30TCG is sourced from the original manufacturer or authorized distributors?
All NCP703MX30TCG 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 NCP703MX30TCG meets industry standards.
7.What is the process for return or replacement of NCP703MX30TCG?
All NCP703MX30TCG units undergo pre-shipment inspection (PSI). If there is an issue with NCP703MX30TCG, 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 NCP703MX30TCG part is unused and in its original packaging.
Return procedure for NCP703MX30TCG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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