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onsemi NCP154MX180270TAG
- Part No.:
- NCP154MX180270TAG
- Manufacturer:
- onsemi
- Package:
- 8-XFDFN Exposed Pad
- Datasheet:
-
NCP154MX180270TAG.pdf
- Description:
- IC REG LINEAR 1.8V/2.7V 8XDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,222
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Product details
Overview
NCP154MX180270TAG from onsemi is a dual-output, 300 mA low-dropout linear voltage regulator with independent IN1/IN2 inputs and fixed 1.8 V / 2.7 V outputs. It delivers ultra-low noise (75 µVrms), high PSRR (75 dB at 1 kHz), and adaptive ground current for battery-powered RF subsystems in smartphones and wireless handsets.
For engineers reviewing the NCP154MX180270TAG datasheet, pinout, applications, or equivalent options, key selection criteria include dual-input flexibility, active output discharge, thermal shutdown per channel, stability with 1 µF ceramic capacitors, and XDFN8 1.2 × 1.6 mm footprint constraints.
Technical Context
The NCP154MX180270TAG integrates two independent PMOS LDO regulators sharing a common ground but with separate input, enable, and output pins. Each channel features dedicated bandgap reference, current-limit protection, and active discharge circuitry activated when EN < 0.4 V.
Its adaptive ground current architecture reduces quiescent current to 55 µA per channel under light load, while maintaining 140–250 mV typical dropout across 1.8 V and 2.7 V outputs at 300 mA. Thermal shutdown triggers at 160°C with 20°C hysteresis, operating independently per channel.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.8 V (OUT1) and 2.7 V (OUT2), fixed, ±2% accuracy over −40°C to +85°C |
| Max Output Current | 300 mA per channel; internal current limit set to 400 mA typical |
| Dropout Voltage | 160 mV typical at 300 mA for OUT2 (2.7 V); enables operation from 2.86 V input |
| PSRR | 75 dB at 1 kHz - suppresses ripple from noisy shared power rails in RF front-ends |
| Quiescent Current | 55 µA per channel at no load - extends battery life in always-on sensor or standby circuits |
| Noise | 75 µVrms (10 Hz–100 kHz) - meets stringent noise requirements for RF transceivers and ADC references |
| Enable Threshold | EN high = ≥0.9 V; EN low = ≤0.4 V - compatible with standard GPIO logic levels |
Pinout & Package
Package: XDFN8 1.2 × 1.6 mm (Case 711AS), thermally enhanced with exposed pad tied to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4 | GND | Power ground terminals; soldered to PCB copper plane for thermal dissipation and low-impedance return path |
| 2 | OUT1 | Regulated 1.8 V output; requires 1 µF ceramic capacitor to GND for stability |
| 3 | OUT2 | Regulated 2.7 V output; independent of OUT1, stable with same 1 µF ceramic capacitor |
| 5 | EN2 | Enable control for OUT2; <0.4 V disables OUT2 and activates 50 Ω active discharge to GND |
| 6 | IN2 | Input supply for OUT2; accepts 1.9–5.25 V; decoupled with 1 µF ceramic capacitor |
| 7 | IN1 | Input supply for OUT1; electrically isolated from IN2, enabling dual-rail or noise-isolated sourcing |
| 8 | EN1 | Enable control for OUT1; identical threshold and discharge behavior as EN2 |
| EP | Exposed Pad | Thermal and electrical connection to GND; mandatory for thermal performance and EMI reduction |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent inputs | IN1 and IN2 allow separate power domains (e.g., battery + DC-DC) to feed each LDO, isolating noise coupling |
| Active output discharge | 50 Ω internal discharge path pulls OUT1/OUT2 to GND within microseconds when disabled - prevents floating voltages in sequencing-critical systems |
| Stable with 1 µF ceramic | Eliminates need for larger or higher-ESR capacitors; supports 0402-size MLCCs for compact layout |
| Per-channel thermal shutdown | Each regulator shuts down independently at 160°C and recovers at 140°C - maintains partial system operation during localized overheating |
| Ultra-low noise without bypass cap | 75 µVrms output noise achieved without external noise-reduction capacitors - saves board space and BOM cost |
Applications
| Smartphone Baseband Power | Wireless LAN RF Front-End |
|---|---|
Use Scenario: Powering baseband processor I/O banks and memory interfaces requiring clean, sequenced 1.8 V and 2.7 V rails. IC Role / Device Role / Timing Role: Dual LDO providing tightly regulated, low-noise supplies with independent enable control for power-state transitions. Use Value: Enables fast wake-up from deep sleep via EN1/EN2 control while maintaining <75 µVrms noise for analog PHY integrity. | Use Scenario: Supplying 2.7 V PA bias and 1.8 V WLAN SoC core in compact 2.4 GHz/5 GHz modules. IC Role / Device Role / Timing Role: Independent IN2-fed 2.7 V rail powers RF power amplifier; IN1-fed 1.8 V powers digital baseband, minimizing cross-talk. Use Value: 75 dB PSRR at 1 kHz rejects switching noise from adjacent DC-DC converters, preserving EVM performance. |
| Bluetooth® Audio SoC | ZigBee® Sensor Node |
Use Scenario: Delivering 1.8 V digital core and 2.7 V audio codec supply in Bluetooth earbud ASICs with tight space constraints. IC Role / Device Role / Timing Role: Dual-output LDO replaces two discrete regulators; XDFN8 package fits within 1.6 mm × 1.2 mm footprint. Use Value: 55 µA/channel IQ extends battery runtime in always-listening voice trigger mode without sacrificing transient response. | Use Scenario: Powering ZigBee transceiver (2.7 V) and microcontroller (1.8 V) in battery-operated industrial sensors. IC Role / Device Role / Timing Role: Dual LDO with independent enable pins allows MCU to power down transceiver while retaining RTC and sensor interface. Use Value: Active discharge ensures rapid VOUT ramp-down during sleep entry, preventing leakage through peripheral pull-ups. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A202818PDBVR | Single-input dual-output; 1.8 V / 2.8 V; 300 mA; 165 mV dropout at 2.8 V | Lacks independent IN1/IN2 - unsuitable where input rail isolation is required | Select only if shared input rail is acceptable and 0.1 V higher OUT2 voltage is tolerable |
| RT9080L-1827GJ6F | Independent inputs; 1.8 V / 2.7 V; 200 mA per channel; 220 mV dropout at 2.7 V | Lower current rating and higher dropout limit maximum load and minimum input headroom | Use when 200 mA per channel suffices and thermal budget permits higher dropout losses |
Compared with TPS7A202818PDBVR and RT9080L-1827GJ6F, the NCP154MX180270TAG uniquely supports true dual-input operation and delivers lower dropout (160 mV vs. 165–220 mV) and lower noise (75 µVrms vs. ≥100 µVrms), making it optimal for noise-sensitive, multi-rail portable designs.
Availability
NCP154MX180270TAG is available at Aetrix Electronics and suitable for smartphone baseband power, wireless LAN RF front-end, Bluetooth® audio SoC, and ZigBee® sensor node applications requiring stable component supply, long-term lifecycle support, and Pb-free compliance.
Supply support for NCP154MX180270TAG 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 is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCP154MX180270TAG belongs to onsemi's high-performance LDO family designed specifically for battery-powered portable electronics requiring ultra-low noise, dual-rail flexibility, and robust protection in space-constrained XDFN packages.
FAQ
What are the exact output voltages of the NCP154MX180270TAG?
The NCP154MX180270TAG provides precisely 1.8 V on OUT1 and 2.7 V on OUT2. These are factory-trimmed fixed outputs with ±2% accuracy over the full operating temperature range (−40°C to +85°C), as confirmed in Table 4 of the official datasheet. No external feedback resistors are required or supported.
Does the NCP154MX180270TAG require external capacitors for stability?
Yes - the NCP154MX180270TAG requires a 1 µF X5R or X7R ceramic capacitor placed close to each IN pin and each OUT pin. The device is explicitly characterized and guaranteed stable with this value, and no minimum ESR is required. Larger values improve transient response but are not necessary for basic stability.
How does the active discharge function work on the NCP154MX180270TAG?
When either EN1 or EN2 falls below 0.4 V, the corresponding output (OUT1 or OUT2) is disabled and an internal 50 Ω transistor actively discharges the output capacitor to GND. This ensures rapid, controlled voltage ramp-down - critical for power sequencing in multi-rail systems and preventing unintended logic states in downstream ICs.
What is the maximum allowable input voltage for the NCP154MX180270TAG?
The absolute maximum input voltage for both IN1 and IN2 is 6 V, but the recommended operating range is 1.9 V to 5.25 V per Table 2 and Table 4. Exceeding 5.25 V may cause excessive power dissipation or reliability risk, especially given the 160°C thermal shutdown threshold and 160°C/W junction-to-ambient thermal resistance in standard layouts.
Can the NCP154MX180270TAG be used with different input voltages on IN1 and IN2?
Yes - the NCP154MX180270TAG is explicitly designed for dual independent inputs. IN1 can supply OUT1 while IN2 supplies OUT2, enabling use cases such as powering OUT1 from a battery and OUT2 from a DC-DC converter, or isolating noisy and clean rails. Each input operates within 1.9–5.25 V and is electrically isolated internally.
NCP154MX180270TAG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-XFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 2
- Voltage - Input (Max):
- 5.25V
- Voltage - Output (Min/Fixed):
- 1.8V, 2.7V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.39V @ 300mA, 0.275V @ 300mA
- Current - Output:
- 300mA, 300mA
- Current - Quiescent (Iq):
- 100 µA
- Current - Supply (Max):
- 200 µA
- PSRR:
- 75dB (1kHz)
- 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-XDFN (1.6x1.2)
NCP154MX180270TAG FAQ
1.How can I place an order for NCP154MX180270TAG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP154MX180270TAG 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 NCP154MX180270TAG reliable?
The price and inventory of NCP154MX180270TAG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP154MX180270TAG is usually 5 days.
3.What payment methods are accepted for NCP154MX180270TAG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP154MX180270TAG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP154MX180270TAG?
NCP154MX180270TAG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP154MX180270TAG 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 NCP154MX180270TAG?
For technical support, including NCP154MX180270TAG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP154MX180270TAG requirements.
6.How does Aetrix verify that NCP154MX180270TAG is sourced from the original manufacturer or authorized distributors?
All NCP154MX180270TAG 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 NCP154MX180270TAG meets industry standards.
7.What is the process for return or replacement of NCP154MX180270TAG?
All NCP154MX180270TAG units undergo pre-shipment inspection (PSI). If there is an issue with NCP154MX180270TAG, 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 NCP154MX180270TAG part is unused and in its original packaging.
Return procedure for NCP154MX180270TAG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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