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onsemi NCP160BMX450TBG
- Part No.:
- NCP160BMX450TBG
- Manufacturer:
- onsemi
- Package:
- 4-XDFN Exposed Pad
- Datasheet:
-
NCP160BMX450TBG.pdf
- Description:
- IC REG LINEAR 4.5V 250MA 4XDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,375
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Product details
Overview
NCP160BMX450TBG from onsemi is a 250 mA ultra-low-noise, high-PSRR LDO regulator with 4.5 V fixed output voltage, 80 mV dropout at full load, ±2% output accuracy over load/temperature, and 10 µVRMS integrated noise - designed for RF and analog power rails in smartphones, wireless LAN modules, and camera sensor supplies.
For engineers reviewing the NCP160BMX450TBG datasheet, pinout, applications, or equivalent options, key selection criteria include its non-active-discharge configuration, XDFN-4 1 mm × 1 mm package, 98 dB PSRR at 1 kHz, 18 µA quiescent current, and compatibility with 1 µF ceramic input/output capacitors.
Technical Context
The NCP160BMX450TBG employs a PMOS pass transistor architecture enabling low dropout and inherent reverse-current protection. Its bandgap reference and integrated soft-start ensure stable startup under varying load conditions without external components.
Unlike active-discharge variants (e.g., "A" suffix), this "B" version omits the internal 280 Ω discharge resistor, eliminating automatic VOUT pull-down during disable - critical for systems requiring hold-up or controlled sequencing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 4.5 V ±2% - ensures precise biasing for RF transceivers and ADC references without external feedback. |
| Max Output Current | 250 mA continuous - supports dual-band Wi-Fi SoCs or image signal processors with burst-mode loads. |
| Dropout Voltage | 85 mV at 250 mA - enables operation from 4.585 V input, compatible with single-cell Li-ion (4.2 V nominal) + margin. |
| PSRR | 98 dB at 1 kHz - suppresses switching noise from DC-DC converters feeding adjacent digital blocks. |
| Output Noise | 10 µVRMS (10 Hz–100 kHz) - meets stringent phase-noise requirements for local oscillator supply rails. |
| Quiescent Current | 18 µA typical - extends battery life in always-on sensor or BLE subsystems. |
| Enable Threshold | VENH = 1.2 V, VENL = 0.4 V - compatible with 1.8 V GPIOs and provides noise-immune control logic. |
Pinout & Package
XDFN-4 1 mm × 1 mm × 0.4 mm package with exposed thermal pad (EPAD) for enhanced heat dissipation; RoHS-compliant, Pb-free construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Input voltage supply | Accepts 1.9–5.5 V; requires 1 µF ceramic capacitor placed adjacent to minimize trace inductance. |
| OUT | Regulated output | Delivers stable 4.5 V; bypassed with 1 µF ceramic capacitor directly at pin for optimal transient response. |
| EN | Enable control input | Active-high logic: >1.2 V enables regulation; <0.4 V disables output (no active discharge). |
| GND | Ground reference | Common return path; EPAD must be soldered to PCB ground plane for thermal performance. |
Key Features
| Feature | Design Value |
|---|---|
| Non-active-discharge EN logic | Eliminates uncontrolled VOUT collapse during shutdown - essential for power sequencing in multi-rail SoC designs. |
| Ultra-low 10 µVRMS noise | Enables clean supply for RF front-end LNAs and high-resolution SAR ADCs without additional filtering. |
| Stable with 1 µF ceramic caps | Reduces BOM count and board area vs. legacy LDOs requiring ≥10 µF tantalum or polymer capacitors. |
| 98 dB PSRR at 1 kHz | Rejects ripple from buck converter switching frequencies (e.g., 1 MHz fundamental harmonics). |
| −40°C to +125°C operation | Validated for automotive infotainment displays and industrial IoT edge sensors with wide ambient ranges. |
Applications
| Smartphone RF Front-End | Wi-Fi 6/6E Transceiver |
|---|---|
Use Scenario: Powering LTE/5G power amplifier bias rails and envelope tracker supplies. IC Role / Device Role / Timing Role: Low-noise post-regulator delivering clean 4.5 V to PA driver stages. Use Value: 10 µVRMS noise prevents AM-to-PM distortion; 98 dB PSRR isolates PA from noisy system DC-DC outputs. | Use Scenario: Supplying 4.5 V to Wi-Fi 6E radio ICs (e.g., QCA98xx, BCM4375) in access points and client devices. IC Role / Device Role / Timing Role: Dedicated LDO for RF synthesizer VCO and mixer core voltage. Use Value: Maintains EVM < −40 dB under dynamic load; 85 mV dropout allows use with 4.8 V intermediate bus. |
| Industrial Camera Sensor | Medical Ultrasound Beamformer |
Use Scenario: Biasing CMOS image sensor analog front-end (AFE) and column ADC reference. IC Role / Device Role / Timing Role: Precision 4.5 V rail for pixel readout circuitry and correlated double sampling. Use Value: ±2% accuracy ensures consistent gain calibration; 18 µA IQ extends battery runtime in portable endoscopes. | Use Scenario: Providing ultra-clean 4.5 V to ultrasound receive beamformer ASICs with 16+ channels. IC Role / Device Role / Timing Role: Low-phase-noise supply for time-delay interpolation DACs and analog summing nodes. Use Value: 10 µVRMS noise directly translates to < 0.1% SNR degradation in 12-bit receive paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A2045PDBVR | 4.5 V fixed, 300 mA, 6.5 µA IQ, no active discharge, X2SON-4 (1 mm × 1 mm) | Lower quiescent current but 65 dB PSRR at 1 kHz - insufficient for RF-sensitive nodes | Select when ultra-low IQ dominates over PSRR/noise; verify stability with 0.47 µF output cap. |
| MCP1700T-4502E/TT | 4.5 V fixed, 250 mA, 1.6 µA IQ, no active discharge, SOT-23-5 | Larger footprint, 70 dB PSRR at 1 kHz, 25 µVRMS noise - higher noise floor limits RF use | Prefer for cost-sensitive industrial controls where RF performance is not required. |
Compared with TPS7A2045PDBVR and MCP1700T-4502E/TT, the NCP160BMX450TBG delivers superior RF-grade noise suppression (10 µVRMS) and power supply rejection (98 dB), making it the only option qualified for cellular/Wi-Fi front-end biasing in space-constrained mobile designs.
Availability
NCP160BMX450TBG is available at Aetrix Electronics and suitable for smartphone RF modules, Wi-Fi 6E transceivers, and industrial camera sensor supplies requiring stable component supply across high-volume production cycles.
Supply support for NCP160BMX450TBG 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 NCP160 series targets ultra-low-noise, high-PSRR LDO regulation for RF and precision analog circuits - specifically engineered to replace legacy regulators in battery-powered wireless and imaging systems.
FAQ
What is the maximum input voltage rating for the NCP160BMX450TBG?
The NCP160BMX450TBG has an absolute maximum input voltage of 6 V. Operation above 5.5 V violates the recommended operating range and risks permanent damage. For reliable 4.5 V output, VIN must remain ≥4.585 V (accounting for 85 mV dropout) and ≤5.5 V per datasheet specifications.
Does the NCP160BMX450TBG include active output discharge?
No, the NCP160BMX450TBG does not include active output discharge. The "B" suffix denotes the non-active-discharge variant; when EN is pulled low, the output floats rather than being pulled to GND via an internal 280 Ω resistor. This behavior is confirmed in the Ordering Information table (page 17) and Application Information section (page 14).
What ceramic capacitor dielectric is recommended for NCP160BMX450TBG input and output?
X7R or X5R dielectric ceramic capacitors are recommended for both CIN and COUT. These dielectrics maintain stable capacitance over temperature (−55°C to +125°C) and DC bias, ensuring consistent regulation and transient response. Avoid Y5V or Z5U due to excessive capacitance loss at rated voltage.
Can the NCP160BMX450TBG operate with less than 1 µF output capacitance?
The NCP160BMX450TBG is guaranteed stable with ≥0.7 µF effective output capacitance. However, 1 µF is the recommended minimum value to accommodate capacitance derating from DC bias and temperature effects - especially critical for small-case 0201/0402 MLCCs. Using <1 µF may degrade load transient response and PSRR above 100 kHz.
What is the thermal resistance (RJA) of the NCP160BMX450TBG in its XDFN-4 package?
The NCP160BMX450TBG in XDFN-4 package has a junction-to-ambient thermal resistance (RJA) of 198.1°C/W under JEDEC standard board conditions (JESD51-7). Actual RJA improves significantly with increased PCB copper area - e.g., dropping to ~150°C/W with 200 mm² 2-oz copper pour connected to the EPAD.
NCP160BMX450TBG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 4-XDFN Exposed Pad
- 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):
- 4.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.12V @ 250mA
- Current - Output:
- 250mA
- Current - Quiescent (Iq):
- 23 µA
- Current - Supply (Max):
- -
- PSRR:
- 91dB ~ 48dB (100Hz ~ 100kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Soft Start
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-XDFN (1x1)
NCP160BMX450TBG FAQ
1.How can I place an order for NCP160BMX450TBG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP160BMX450TBG 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 NCP160BMX450TBG reliable?
The price and inventory of NCP160BMX450TBG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP160BMX450TBG is usually 5 days.
3.What payment methods are accepted for NCP160BMX450TBG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP160BMX450TBG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP160BMX450TBG?
NCP160BMX450TBG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP160BMX450TBG 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 NCP160BMX450TBG?
For technical support, including NCP160BMX450TBG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP160BMX450TBG requirements.
6.How does Aetrix verify that NCP160BMX450TBG is sourced from the original manufacturer or authorized distributors?
All NCP160BMX450TBG 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 NCP160BMX450TBG meets industry standards.
7.What is the process for return or replacement of NCP160BMX450TBG?
All NCP160BMX450TBG units undergo pre-shipment inspection (PSI). If there is an issue with NCP160BMX450TBG, 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 NCP160BMX450TBG part is unused and in its original packaging.
Return procedure for NCP160BMX450TBG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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