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onsemi NCP154MX150280TAG
- Part No.:
- NCP154MX150280TAG
- Manufacturer:
- onsemi
- Package:
- 8-XFDFN Exposed Pad
- Datasheet:
-
NCP154MX150280TAG.pdf
- Description:
- IC REG LINEAR 1.5V/2.8V 8XDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,721
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Product details
Overview
NCP154MX150280TAG from onsemi is a dual-output, 300 mA low-dropout linear voltage regulator with independent input pins (IN1/IN2), fixed output voltages of 1.5 V and 2.8 V, ultra-low noise (75 µVRMS), and high PSRR (75 dB at 1 kHz). It features adaptive ground current for battery-powered RF applications including smartphones and wireless handsets.
For engineers reviewing the NCP154MX150280TAG datasheet, pinout, applications, or equivalent options, key selection criteria include dual independent enable control (EN1/EN2), active output discharge (50 Ω), thermal shutdown (160 °C), stable operation with 1 µF ceramic capacitors, and XDFN8 1.2 × 1.6 mm package compatibility.
Technical Context
The NCP154MX150280TAG integrates two independent PMOS LDO regulators sharing a common ground but with separate input, enable, and output terminals. Each channel employs bandgap reference, current-limit protection, and thermal shutdown circuitry with dedicated enable logic driving active discharge transistors.
Its architecture supports simultaneous or staggered enable/disable sequencing via EN1 and EN2, enabling fast turn-off with 50 Ω discharge resistance and sub-100 nA shutdown current. The device operates across 1.9–5.25 V input range and delivers ±2% output accuracy for VOUT > 2 V, with dropout as low as 160 mV at 300 mA for the 2.8 V output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.5 V (OUT1) and 2.8 V (OUT2), fixed, ±2% accuracy for VOUT > 2 V |
| Max Output Current | 300 mA per channel, with 400 mA current limit and short-circuit protection |
| Dropout Voltage | 160 mV typical at 300 mA for 2.8 V output; enables efficient regulation in low-VIN scenarios |
| Quiescent Current | 55 µA per channel typical, enabling multi-day battery life in always-on subsystems |
| PSRR | 75 dB at 1 kHz, critical for noise-sensitive RF and analog circuits |
| Noise | 75 µVRMS (10 Hz–100 kHz), eliminates need for external noise-bypass capacitors |
| Enable Threshold | EN high = ≥0.9 V, EN low = ≤0.4 V, compatible with standard GPIO logic levels |
Pinout & Package
XDFN8 1.2 × 1.6 mm package (Case 711AS) with exposed thermal pad (EP) tied to GND for enhanced heat dissipation. Pin 1 and Pin 4 are GND; EP must be soldered to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Power ground | Primary ground return path; soldered to copper plane for thermal and electrical performance |
| 2 OUT1 | Regulated 1.5 V output | Requires 1 µF ceramic capacitor to GND for stability; supplies core logic or I/O rails |
| 3 OUT2 | Regulated 2.8 V output | Stable 2.8 V rail for RF front-end or sensor interfaces; same capacitor requirement as OUT1 |
| 4 GND | Power ground | Secondary ground connection; improves current distribution and reduces ground bounce |
| 5 EN2 | Enable for OUT2 | Controls 2.8 V rail independently; <0.4 V disables OUT2 and activates 50 Ω discharge to GND |
| 6 IN2 | Input for OUT2 | Dedicated 2.8 V input path; decoupled with 1 µF ceramic capacitor near pin |
| 7 IN1 | Input for OUT1 | Dedicated 1.5 V input path; isolated from IN2 to prevent cross-regulation coupling |
| 8 EN1 | Enable for OUT1 | Controls 1.5 V rail independently; identical threshold and discharge behavior as EN2 |
| EP | Exposed thermal pad | Mandatory GND connection; primary thermal path to PCB; improves θJA by up to 40% |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent inputs | IN1 and IN2 allow separate power domains (e.g., battery + USB) without cross-talk or shared dropout constraints |
| Active output discharge | 50 Ω internal discharge path ensures rapid, controlled turn-off of both outputs-critical for sequencing and safety compliance |
| Ultra-low noise | 75 µVRMS noise eliminates need for external bypass caps, reducing BOM count and board area |
| Adaptive ground current | Ground current drops to ~55 µA per channel at light load, extending battery runtime in standby modes |
| Thermal shutdown with hysteresis | 160 °C trip with 20 °C hysteresis prevents thermal oscillation and protects against sustained overload |
Applications
| Smartphone Power Management | Wireless LAN Front-End |
|---|---|
Use Scenario: Dual-rail power for application processor core (1.5 V) and RF transceiver (2.8 V) in compact smartphone designs. IC Role / Device Role / Timing Role: Dual LDO providing isolated, low-noise, sequenced voltage rails with independent enable control. Use Value: Enables simultaneous core and RF operation with minimal PSRR degradation and no external noise filtering required. | Use Scenario: Powering 2.4 GHz WLAN RFIC and its associated baseband interface requiring clean 1.5 V and 2.8 V supplies. IC Role / Device Role / Timing Role: Low-noise dual regulator delivering stable bias to sensitive RF stages while supporting fast enable/disable during sleep/wake cycles. Use Value: 75 dB PSRR at 1 kHz suppresses switching noise from nearby DC-DC converters, improving EVM and receiver sensitivity. |
| Bluetooth Audio SoC | Industrial IoT Sensor Hub |
Use Scenario: Supplying 1.5 V digital core and 2.8 V analog/RF section of Bluetooth LE audio SoC in hearing aids or wearables. IC Role / Device Role / Timing Role: Dual-output LDO with ultra-low IQ and active discharge for ultra-low-power intermittent operation. Use Value: 55 µA quiescent current per channel extends battery life beyond 7 days in typical usage; fast discharge prevents residual voltage hold-up. | Use Scenario: Powering microcontroller (1.5 V) and environmental sensor interface (2.8 V) in battery-operated edge node with long sleep intervals. IC Role / Device Role / Timing Role: Dual LDO with independent EN pins enabling selective wake-up of subsystems without powering entire system. Use Value: Independent enable allows sensor-only wake-up (EN2 only), reducing average system current by >90% versus full-rail activation. |
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 |
|---|---|---|---|
| TI TPS7A202815PDBVR | Single-input dual-output; fixed 1.5 V/2.8 V; 300 mA; 65 dB PSRR @ 1 kHz; no active discharge | Lacks independent IN1/IN2 and active discharge; requires external discharge FET for fast turn-off | Select when board space is constrained and independent inputs are unnecessary; avoid where fast, controlled discharge is required. |
| Rohm BD3572FP-E2 | Dual-output; 1.5 V/2.8 V; 300 mA; 70 dB PSRR @ 1 kHz; 100 µA IQ; no independent enable pins | Shared EN pin disables both outputs simultaneously; no active discharge; higher quiescent current | Choose for cost-sensitive designs where independent sequencing is not needed and lower IQ is not critical. |
Compared with TPS7A202815PDBVR and BD3572FP-E2, the NCP154MX150280TAG uniquely provides independent inputs and enables, active discharge per channel, and superior PSRR-making it optimal for RF-critical, battery-constrained systems requiring precise power sequencing and noise immunity.
Availability
NCP154MX150280TAG is available at Aetrix Electronics and suitable for smartphone power management, wireless LAN front-end design, and Bluetooth audio SoC applications requiring stable component supply, consistent parametric performance, and Pb-free XDFN8 packaging.
Supply support for NCP154MX150280TAG 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 focused on energy-efficient electronics, with leadership in power management, analog, and sensor technologies.
The NCP154MX150280TAG belongs to onsemi's high-performance LDO family designed specifically for battery-powered portable devices demanding ultra-low noise, high PSRR, and dual-rail flexibility in minimal footprint.
FAQ
What are the exact output voltages of the NCP154MX150280TAG?
The NCP154MX150280TAG provides precisely 1.5 V on OUT1 and 2.8 V on OUT2, as confirmed by the ordering information table in the official datasheet (Table 5). Output voltage accuracy is ±2% for VOUT > 2 V (i.e., 2.8 V channel) and ±60 mV for VOUT ≤ 2 V (i.e., 1.5 V channel), ensuring reliable operation across temperature and load conditions.
Does the NCP154MX150280TAG require external noise-bypass capacitors?
No, the NCP154MX150280TAG does not require external noise-bypass capacitors. Its ultra-low output noise (75 µVRMS, 10 Hz–100 kHz) is achieved internally, and the datasheet explicitly states "the device doesn't require any additional noise bypass capacitor to achieve ultra low noise performance." Stability is maintained with only a 1 µF ceramic output capacitor per channel.
How does the active discharge function work on the NCP154MX150280TAG?
When EN1 or EN2 falls below 0.4 V, the corresponding output (OUT1 or OUT2) is disabled and an internal 50 Ω discharge path to GND is activated. This rapidly pulls the output voltage to ground-verified in Figure 52 and 53 of the datasheet-with typical discharge time under 100 µs for 1 µF loads. The NCP154MX150280TAG implements this independently per channel, enabling precise power sequencing.
What is the maximum input voltage rating for the NCP154MX150280TAG?
The absolute maximum input voltage for both IN1 and IN2 pins of the NCP154MX150280TAG is 6 V, as specified in Table 2 (Absolute Maximum Ratings). However, the recommended operating input voltage range is 1.9 V to 5.25 V per channel. Exceeding 6 V risks permanent damage, and operation above 5.25 V is outside guaranteed specifications.
Can the NCP154MX150280TAG operate with only one output enabled?
Yes, the NCP154MX150280TAG supports independent operation: EN1 can enable only OUT1 (1.5 V) while EN2 holds OUT2 (2.8 V) disabled, and vice versa. The datasheet confirms separate enable logic and independent current limiting, thermal shutdown, and active discharge per channel-enabling flexible power sequencing without affecting the other rail.
NCP154MX150280TAG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-XFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 2
- Voltage - Input (Max):
- 5.25V
- Voltage - Output (Min/Fixed):
- 1.5V, 2.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.47V @ 300mA, 0.27V @ 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)
NCP154MX150280TAG FAQ
1.How can I place an order for NCP154MX150280TAG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP154MX150280TAG 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 NCP154MX150280TAG reliable?
The price and inventory of NCP154MX150280TAG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP154MX150280TAG is usually 5 days.
3.What payment methods are accepted for NCP154MX150280TAG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP154MX150280TAG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP154MX150280TAG?
NCP154MX150280TAG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP154MX150280TAG 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 NCP154MX150280TAG?
For technical support, including NCP154MX150280TAG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP154MX150280TAG requirements.
6.How does Aetrix verify that NCP154MX150280TAG is sourced from the original manufacturer or authorized distributors?
All NCP154MX150280TAG 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 NCP154MX150280TAG meets industry standards.
7.What is the process for return or replacement of NCP154MX150280TAG?
All NCP154MX150280TAG units undergo pre-shipment inspection (PSI). If there is an issue with NCP154MX150280TAG, 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 NCP154MX150280TAG part is unused and in its original packaging.
Return procedure for NCP154MX150280TAG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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