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onsemi NCP151AAMX180070TCG
- Part No.:
- NCP151AAMX180070TCG
- Manufacturer:
- onsemi
- Package:
- 4-XDFN Exposed Pad
- Datasheet:
-
NCP151AAMX180070TCG.pdf
- Description:
- IC REG LIN 1.8V/0.7V 300MA 4XDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,239
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Product details
Overview
NCP151AAMX180070TCG from onsemi is a dual-output low-dropout linear regulator delivering 300 mA per channel with fixed outputs of 1.8 V (OUT1) and 0.70 V (OUT2), operating from 1.7 V to 5.5 V input. It features ±2% output accuracy, 100 µA typical quiescent current, and 70 dB PSRR at 1 kHz-optimized for space-constrained, battery-powered portable electronics requiring clean, independent voltage rails.
For engineers reviewing the NCP151AAMX180070TCG datasheet, pinout, applications, or equivalent options, key selection criteria include dual-rail precision, ultra-low IQ under light load, XDFN4 package thermal performance, and compatibility with 1 µF ceramic output capacitors without external compensation.
Technical Context
The NCP151AAMX180070TCG integrates two independent PMOS-based LDO regulators sharing a common input and ground, each with dedicated soft-start, current limiting (600 mA typ), and thermal shutdown (160°C trip). Its dynamic quiescent current adjustment maintains low IQ across load range, while high PSRR is achieved via internal bandgap reference and error amplifier design.
Each output supports stable operation with 1 µF X7R/X5R ceramic capacitors and tolerates ESR up to 1.7 Ω. The device implements channel-isolated protection: short-circuit current limiting and thermal shutdown act per channel, allowing one output to remain active during fault on the other.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage (OUT1/OUT2) | 1.8 V / 0.70 V - fixed, factory-trimmed outputs enabling direct power for core logic and I/O interfaces without external feedback. |
| Max Output Current | 300 mA per channel - sufficient to power multiple low-power ICs (e.g., sensors, RF transceivers) from a single compact regulator. |
| Dropout Voltage | 210 mV @ 300 mA, OUT1=2.8 V - enables regulation from low VIN (e.g., single-cell Li-ion down to ~2.0 V) while maintaining output stability. |
| Quiescent Current | 100 µA typ - minimizes standby power loss in always-on subsystems such as real-time clocks or wake-up circuitry. |
| PSRR | 70 dB @ 1 kHz - suppresses switching noise from upstream DC-DC converters, critical for analog/RF sections like camera sensors or Bluetooth® radios. |
| Accuracy | ±2% over load/temperature - ensures reliable operation of voltage-sensitive peripherals without margining overhead. |
| Noise (RMS) | 70 µV RMS (10 Hz–100 kHz) - low enough for powering noise-sensitive analog circuits including ADC references and audio codecs. |
Pinout & Package
Package: XDFN4 (Case 711AJ), 1.0 mm × 1.0 mm × 0.4 mm, with exposed thermal pad (EPAD) for enhanced heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Input supply connection | Accepts 1.7–5.5 V input; must be decoupled with ≥1 µF ceramic capacitor placed adjacent to pin for transient immunity. |
| OUT1 | First regulated output | Delivers fixed 1.8 V at up to 300 mA; requires local 1 µF ceramic bypass to maintain stability and PSRR performance. |
| OUT2 | Second regulated output | Delivers fixed 0.70 V at up to 300 mA; same decoupling requirement as OUT1; independent regulation prevents cross-talk. |
| GND | Common ground reference | Return path for both channels; must connect directly to PCB ground plane; EPAD tied to GND improves thermal resistance by ~30%. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent LDOs | Enables simultaneous generation of mismatched voltages (1.8 V + 0.70 V) from one IC-reducing BOM count and board area vs. two discrete regulators. |
| Dynamic IQ adjustment | Reduces quiescent current to ~100 µA at no-load while scaling with output current-extending battery life in intermittent-use devices like wearables. |
| Channel-isolated protection | Thermal shutdown and current limit operate per channel; failure on OUT2 does not disable OUT1-critical for system-level fault tolerance. |
| 1 µF ceramic capacitor stability | Eliminates need for larger or higher-ESR capacitors, enabling use of 0201/0402 case sizes and simplifying layout in ultra-thin mobile designs. |
| Normal slew rate (Version A) | 100 mV/s VOUT ramp-up-balances fast turn-on against inrush current; suitable for general-purpose digital loads without sensitive analog sequencing requirements. |
Applications
| Smartphone Baseband Power | Wearable Sensor Hub |
|---|---|
Use Scenario: Powers application processor I/O domain (1.8 V) and memory interface termination (0.70 V) in LTE/5G smartphones. IC Role / Device Role / Timing Role: Dual-rail LDO providing isolated, low-noise bias for high-speed digital interfaces with tight voltage tolerance. Use Value: Eliminates need for two separate regulators and associated passives, reducing solution size by >40% while maintaining PSRR >70 dB to prevent RF interference coupling. | Use Scenario: Supplies 1.8 V to BLE SoC and 0.70 V to MEMS accelerometer/gyroscope in compact fitness trackers. IC Role / Device Role / Timing Role: Low-IQ dual LDO enabling multi-sensor operation during extended sleep cycles with sub-100 µA system standby current. Use Value: Dynamic IQ adjustment extends battery runtime beyond 7 days on coin-cell power, verified across −40°C to +85°C operating range. |
| Portable Medical Glucometer | Bluetooth® Audio Earbud |
Use Scenario: Delivers 1.8 V to microcontroller and 0.70 V to precision analog front-end (AFE) in FDA-cleared handheld diagnostic devices. IC Role / Device Role / Timing Role: Precision dual LDO ensuring stable reference voltage for 16-bit ADC conversion and low-noise sensor excitation. Use Value: 70 µV RMS noise and ±2% accuracy meet IEC 60601-1 essential performance requirements for clinical-grade measurement repeatability. | Use Scenario: Powers DSP core (1.8 V) and RF transceiver bias (0.70 V) in true wireless stereo (TWS) earbuds with <30 mm³ form factor. IC Role / Device Role / Timing Role: Space-optimized dual LDO supporting rapid wake-from-sleep transitions with controlled 100 mV/s slew rate. Use Value: XDFN4 package (1.0 × 1.0 mm) fits within constrained battery cavity; 1 µF capacitor support avoids height penalty of tantalum alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A2028070DQNR | Single-input, dual-output LDO with 2.8 V / 0.70 V fixed outputs; 250 mA per channel; 65 dB PSRR @ 1 kHz. | Higher output voltage mismatch (2.8 V vs. 1.8 V); lower current capability limits use with higher-drive peripherals. | Select when system requires 2.8 V rail for MCU core and 0.70 V for I/O-NCP151AAMX180070TCG preferred for 1.8 V logic compatibility. |
| MCP1826S-18070SK | 1.8 V / 0.70 V dual LDO; 300 mA per channel; 150 µA IQ; 60 dB PSRR @ 1 kHz; SOT-23-6 package. | Larger footprint (2.9 × 2.8 mm vs. 1.0 × 1.0 mm); lower PSRR reduces noise rejection in RF-dense environments. | Choose for legacy SMT lines incompatible with XDFN4; NCP151AAMX180070TCG offers superior thermal performance and board-area savings. |
Compared with TPS7A2028070DQNR and MCP1826S-18070SK, the NCP151AAMX180070TCG delivers optimal balance of 1.8 V/0.70 V matching, 300 mA per channel, 70 dB PSRR, and 1.0 mm² footprint-making it the highest-density solution for next-generation portable electronics where board space and noise immunity are co-constrained.
Availability
NCP151AAMX180070TCG is available at Aetrix Electronics and suitable for smartphone baseband power, wearable sensor hubs, portable medical glucometers, Bluetooth® audio earbuds, and other battery-powered applications requiring stable component supply with guaranteed long-term continuity.
Supply support for NCP151AAMX180070TCG 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 specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The NCP151 series is designed specifically for dual-rail, low-power portable electronics-emphasizing ultra-low quiescent current, small-footprint packaging, and robust protection for battery-constrained systems.
FAQ
What output voltages does the NCP151AAMX180070TCG provide?
The NCP151AAMX180070TCG provides two fixed output voltages: 1.8 V on OUT1 and 0.70 V on OUT2. These values are factory-trimmed and specified over full temperature and load range with ±2% accuracy. Neither output is adjustable-the device is intended for applications requiring precise, stable dual-rail bias without external feedback components.
Does the NCP151AAMX180070TCG require external capacitors for stability?
Yes, the NCP151AAMX180070TCG requires a minimum 1 µF X7R or X5R ceramic capacitor on both IN and each OUT pin, placed as close as possible to the respective pins. The device is internally compensated and remains stable with these values-no additional ESR or capacitance is needed. Tantalum capacitors are not recommended due to their high and temperature-variable ESR.
How does thermal shutdown operate on the NCP151AAMX180070TCG?
The NCP151AAMX180070TCG implements per-channel thermal shutdown: if die temperature exceeds 160°C (typ), the affected channel disables while the other continues operating. Recovery occurs automatically when temperature falls below 140°C (typ). This isolation prevents total system failure during localized overload or poor heatsinking-verified across −40°C to +85°C ambient conditions.
What is the maximum input voltage rating for the NCP151AAMX180070TCG?
The absolute maximum input voltage for the NCP151AAMX180070TCG is 6 V, but the recommended operating range is 1.7 V to 5.5 V. Operation above 5.5 V risks permanent damage even for brief transients. Input voltage must also remain ≥ (VOUT + dropout) to maintain regulation-for example, ≥2.01 V required for 1.8 V OUT1 at 300 mA load.
Is the NCP151AAMX180070TCG RoHS compliant and lead-free?
Yes, the NCP151AAMX180070TCG is Pb-free, halogen-free/BFR-free, and fully RoHS compliant per EU Directive 2011/65/EU. The "G" suffix in the part number explicitly denotes lead-free packaging. The XDFN4 package (Case 711AJ) uses matte tin lead finish and meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL1) for unlimited floor life at ≤30°C/60% RH.
NCP151AAMX180070TCG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 4-XDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 2
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.8V, 0.7V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 300mA, 300mA
- Current - Quiescent (Iq):
- 200 µA
- Current - Supply (Max):
- -
- PSRR:
- 70dB (1kHz)
- Control Features:
- Current Limit, Enable, Soft Start
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-XDFN (1x1)
NCP151AAMX180070TCG FAQ
1.How can I place an order for NCP151AAMX180070TCG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP151AAMX180070TCG 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 NCP151AAMX180070TCG reliable?
The price and inventory of NCP151AAMX180070TCG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP151AAMX180070TCG is usually 5 days.
3.What payment methods are accepted for NCP151AAMX180070TCG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP151AAMX180070TCG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP151AAMX180070TCG?
NCP151AAMX180070TCG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP151AAMX180070TCG 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 NCP151AAMX180070TCG?
For technical support, including NCP151AAMX180070TCG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP151AAMX180070TCG requirements.
6.How does Aetrix verify that NCP151AAMX180070TCG is sourced from the original manufacturer or authorized distributors?
All NCP151AAMX180070TCG 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 NCP151AAMX180070TCG meets industry standards.
7.What is the process for return or replacement of NCP151AAMX180070TCG?
All NCP151AAMX180070TCG units undergo pre-shipment inspection (PSI). If there is an issue with NCP151AAMX180070TCG, 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 NCP151AAMX180070TCG part is unused and in its original packaging.
Return procedure for NCP151AAMX180070TCG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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