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onsemi NCP702MX18TCG
- Part No.:
- NCP702MX18TCG
- Manufacturer:
- onsemi
- Package:
- 6-XFDFN
- Datasheet:
-
NCP702MX18TCG.pdf
- Description:
- IC REG LINEAR 1.8V 200MA 6XDFN
- Quantity:
- Payment:
- Shipping:
Inventory:110
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Product details
Overview
NCP702MX18TCG from onsemi is a 200 mA ultra-low-noise, ultra-low-quiescent-current LDO linear voltage regulator delivering fixed 1.8 V output with ±2% accuracy over −40 °C to +125 °C, 140 mV typical dropout at full load, 11 µVRMS output noise (100 Hz–100 kHz), and 68 dB PSRR at 1 kHz - engineered for powering RF front-ends, PLLs, and low-noise amplifiers in battery-powered portable devices.
For engineers reviewing the NCP702MX18TCG datasheet, pinout, applications, or equivalent options, this page provides verified package mapping (XDFN-6, 1.5 × 1.5 mm), validated terminal functions, confirmed thermal shutdown and active discharge behavior, and real-world selection guidance against comparable low-noise LDOs for portable medical, wireless handset, and precision instrumentation designs.
Technical Context
The NCP702MX18TCG integrates a PMOS pass transistor with adaptive ground current control, enabling 10 µA quiescent current at no load while maintaining regulation under 200 mA output. Its internal bandgap reference and soft-start circuit ensure monotonic turn-on without overshoot, and the EN pin implements hysteresis (0.4 V low threshold / 0.9 V high threshold) to prevent noise-induced toggling.
It achieves ultra-low noise without external bypass capacitors via optimized internal compensation and low-noise biasing, and incorporates active output discharge (1 kΩ pull-down) during disable, thermal shutdown (160 °C trip, 20 °C hysteresis), and current limiting (385 mA typ.) - all operating within 2.0 V to 5.5 V input range and stable with only 1 µF ceramic output capacitance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±2% over full load/line/temperature - ensures stable bias for 1.8 V logic and RF ICs without external feedback. |
| Max Output Current | 200 mA continuous - sufficient for baseband processors, sensor signal chains, and low-power transceivers. |
| Quiescent Current | 10 µA typical at no load - extends battery life in always-on wearable and IoT edge nodes. |
| Output Noise | 11 µVRMS (100 Hz–100 kHz) - meets stringent spectral purity requirements of VCOs and LNA stages. |
| PSRR | 68 dB at 1 kHz - suppresses switching noise from adjacent DC-DC converters feeding mixed-signal subsystems. |
| Dropout Voltage | 140 mV typical at 200 mA - enables operation down to 1.94 V input, compatible with single-cell Li-ion (2.7–4.2 V) with margin. |
| Enable Threshold | 0.4 V (low) / 0.9 V (high) - compatible with standard GPIOs and open-drain controllers without level-shifting. |
Pinout & Package
Package: XDFN-6, 1.5 mm × 1.5 mm, 0.5 mm pitch, wettable flank - optimized for space-constrained portable PCBs and compatible with automated optical inspection (AOI).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input supply connection | Accepts 2.0–5.5 V; requires local 1 µF ceramic capacitor to minimize trace inductance effects during load transients. |
| 2 (EN) | Logic-enable control input | Drives >0.9 V to enable regulator; <0.4 V to disable with active discharge; internal 110 nA pull-down ensures default-off state. |
| 3 (N/C) | No-connect terminal | Internally unconnected; may be tied to GND to improve thermal dissipation per datasheet recommendation. |
| 4 (OUT) | Regulated output | Delivers 1.8 V ±2%; stable with ≥1 µF X5R/X7R ceramic capacitor; ESR < 700 mΩ required. |
| 5 (GND) | Power ground reference | Low-impedance return path; must be connected to solid ground plane to maintain PSRR and noise performance. |
| 6 (N/C) | No-connect terminal | Internally unconnected; may be tied to GND to improve thermal dissipation per datasheet recommendation. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise without bypass cap | 11 µVRMS achieved via internal low-noise topology - eliminates BOM cost and board area for external noise-reduction capacitors. |
| Adaptive ground current | 10 µA IQ at zero load rising to 160 µA at 200 mA - dynamically minimizes power loss across operating range. |
| Active output discharge | 1 kΩ internal pull-down activated during disable - ensures fast, controlled VOUT ramp-down for sequencing-critical systems. |
| Stable with minimal output capacitance | Guaranteed stability with 1 µF ceramic COUT - reduces solution size and cost versus LDOs requiring ≥10 µF. |
| Integrated protection | Thermal shutdown (160 °C), current limit (385 mA typ.), and UVLO (1.6 V enable threshold) - enables robust operation without external supervision. |
Applications
| Wireless Handset RF Front-End | Portable Medical Sensor Node |
|---|---|
Use Scenario: Powering LNA and mixer stages in Bluetooth/Wi-Fi 2.4 GHz transceivers where supply ripple directly impacts EVM and sensitivity. IC Role / Device Role / Timing Role: Ultra-low-noise 1.8 V bias rail generator with fast transient response to support burst-mode transmission. Use Value: 11 µVRMS noise and 68 dB PSRR at 1 kHz prevent AM-to-PM conversion and preserve receiver NF below 2.5 dB. |
Use Scenario: Supplying ADC reference buffers and analog front-end op-amps in handheld ECG monitors requiring sub-µV baseline stability. IC Role / Device Role / Timing Role: Precision low-drift 1.8 V reference source with ±2% accuracy over temperature and load. Use Value: 2.6 mV max load regulation and 0.29 mV/V line regulation ensure <0.01% gain error across battery discharge cycle. |
| GPS/GNSS Baseband Processor | Wearable BLE SoC Core Rail |
Use Scenario: Delivering clean 1.8 V core voltage to GPS correlator ASICs sensitive to supply-induced clock jitter. IC Role / Device Role / Timing Role: Low-noise, low-dropout regulator supporting dynamic voltage scaling during acquisition vs. tracking modes. Use Value: 140 mV dropout enables operation down to 1.94 V input - extends usable runtime from single-cell Li-ion (2.8–4.2 V). |
Use Scenario: Powering ARM Cortex-M0+ MCU and BLE radio in coin-cell–powered fitness trackers with multi-year battery life. IC Role / Device Role / Timing Role: Always-on LDO with 10 µA quiescent current and fast EN-controlled wake-up (<300 µs). Use Value: Adaptive ground current cuts standby power by >50% vs. fixed-IQ regulators, directly extending shelf life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6210B182MR-G | 180 mA output, 25 µVRMS noise, requires 2.2 µF min COUT, no active discharge | Lacks active discharge and higher noise limits suitability in fast-sequencing or ultra-low-phase-noise systems | Select when board space allows larger output cap and discharge timing is non-critical |
| Richtek RT9080-18PU5 | 300 mA output, 20 µVRMS noise, 250 mV dropout at 300 mA, no UVLO | Higher dropout and noise reduce margin in Li-ion–fed RF sections; lacks undervoltage lockout | Select only for higher-current digital loads where noise and dropout are less critical |
Compared with XC6210B182MR-G and RT9080-18PU5, the NCP702MX18TCG uniquely combines 11 µVRMS noise, 140 mV dropout, active discharge, and UVLO in a 1.5 × 1.5 mm XDFN - making it the sole option meeting simultaneous requirements for portable RF, precision analog, and battery-life–optimized designs.
Availability
NCP702MX18TCG is available at Aetrix Electronics and suitable for wireless handsets, portable medical sensors, and GNSS receivers requiring stable component supply with guaranteed long-term availability and consistent parametric performance.
Supply support for NCP702MX18TCG 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 NCP702 series was designed specifically for noise-sensitive, battery-powered portable electronics - emphasizing ultra-low IQ, ultra-low noise, and minimal external component count without sacrificing protection or thermal robustness.
FAQ
What is the output voltage tolerance of the NCP702MX18TCG over temperature and load?
The NCP702MX18TCG maintains ±2% output voltage accuracy across −40 °C to +125 °C junction temperature, full 0–200 mA load range, and input voltage from VOUT + 0.3 V to 5.5 V. This is verified in Table 4 of the official datasheet and ensures reliable operation for 1.8 V logic and analog circuits without external trimming.
Does the NCP702MX18TCG require an external noise-bypass capacitor?
No, the NCP702MX18TCG achieves 11 µVRMS output noise (100 Hz–100 kHz) without any external noise-bypass capacitor. Its internal architecture eliminates the need for a separate 10 nF–100 nF capacitor typically used with other LDOs - reducing BOM count and PCB area while maintaining ultra-low noise performance.
What is the maximum allowable input voltage for the NCP702MX18TCG?
The absolute maximum input voltage for the NCP702MX18TCG is 6 V, but the recommended operating range is 2.0 V to 5.5 V. Exceeding 5.5 V risks permanent damage, and operation below 2.0 V triggers undervoltage lockout (UVLO) - disabling regulation until VIN rises above ~1.6 V.
How does the NCP702MX18TCG behave during shutdown?
When the EN pin is driven below 0.4 V, the NCP702MX18TCG disables its pass transistor and activates an internal 1 kΩ active discharge path from OUT to GND. It draws only 10 nA from IN, ensuring rapid, controlled VOUT decay - critical for power sequencing in multi-rail systems.
Is the NCP702MX18TCG stable with ceramic output capacitors smaller than 1 µF?
No - the NCP702MX18TCG is specified and characterized for stability with a minimum 1.0 µF ceramic output capacitor (X5R or X7R dielectric, ±10% initial tolerance). Using smaller values risks oscillation or degraded transient response, as confirmed in the Applications Information section and Figure 60 of the datasheet.
NCP702MX18TCG 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):
- 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 200mA
- Current - Quiescent (Iq):
- 16 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)
NCP702MX18TCG FAQ
1.How can I place an order for NCP702MX18TCG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP702MX18TCG 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 NCP702MX18TCG reliable?
The price and inventory of NCP702MX18TCG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP702MX18TCG is usually 5 days.
3.What payment methods are accepted for NCP702MX18TCG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP702MX18TCG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP702MX18TCG?
NCP702MX18TCG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP702MX18TCG 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 NCP702MX18TCG?
For technical support, including NCP702MX18TCG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP702MX18TCG requirements.
6.How does Aetrix verify that NCP702MX18TCG is sourced from the original manufacturer or authorized distributors?
All NCP702MX18TCG 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 NCP702MX18TCG meets industry standards.
7.What is the process for return or replacement of NCP702MX18TCG?
All NCP702MX18TCG units undergo pre-shipment inspection (PSI). If there is an issue with NCP702MX18TCG, 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 NCP702MX18TCG part is unused and in its original packaging.
Return procedure for NCP702MX18TCG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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