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onsemi NCP160BMX350TBG
- Part No.:
- NCP160BMX350TBG
- Manufacturer:
- onsemi
- Package:
- 4-XDFN Exposed Pad
- Datasheet:
-
NCP160BMX350TBG.pdf
- Description:
- IC REG LINEAR 3.5V 250MA 4XDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,813
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Product details
Overview
NCP160BMX350TBG from onsemi is a 250 mA ultra-low-noise, high-PSRR LDO regulator with fixed 3.5 V output, 80 mV dropout at full load, ±2% output accuracy over load/temperature, and 10 µVRMS integrated noise (10 Hz–100 kHz). It serves as a precision power supply for RF transceivers and analog signal chains in space-constrained portable devices.
For engineers reviewing the NCP160BMX350TBG datasheet, pinout, applications, or equivalent options, key selection criteria include its non-active-discharge configuration, XDFN4 1 mm × 1 mm package, 1.9–5.5 V input range, 18 µA quiescent current, and compatibility with 1 µF ceramic input/output capacitors.
Technical Context
The NCP160BMX350TBG employs a PMOS pass transistor architecture enabling low dropout and inherent reverse-current protection. Its bandgap reference and integrated soft-start ensure stable startup without output overshoot under varying load conditions.
Unlike active-discharge variants (e.g., "A" suffix), the "B" version omits the internal 280 Ω discharge path-eliminating automatic VOUT pull-down during disable, simplifying system-level sequencing where controlled discharge is handled externally.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.5 V ±2% - ensures stable biasing for 3.3 V–3.6 V analog/RF ICs without external feedback components. |
| Max Output Current | 250 mA - supports moderate-power RF front-end modules and ADC/DAC bias rails. |
| Dropout Voltage | 80 mV at 250 mA - enables operation from 3.58 V input, critical for single-cell Li-ion (3.0–4.2 V) systems. |
| PSRR | 98 dB at 1 kHz - suppresses switching noise from adjacent DC-DC converters feeding shared input rails. |
| Output Noise | 10 µVRMS (10 Hz–100 kHz) - preserves SNR in sensitive RF receivers and high-resolution audio paths. |
| Quiescent Current | 18 µA typical - extends battery life in always-on sensor nodes and standby modes. |
| Enable Threshold | VENH = 1.2 V, VENL = 0.4 V - compatible with standard GPIO logic levels for host-controlled power gating. |
Pinout & Package
XDFN4 package: 1 mm × 1 mm × 0.4 mm, exposed pad (EPAD) for thermal enhancement, 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 fixed 3.5 V; must be bypassed with 1 µF ceramic capacitor near pin for stability and 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 for IN, OUT, and EN; EPAD must be connected to PCB ground plane for optimal thermal performance. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise | 10 µVRMS output noise enables use in GPS/GNSS receivers and low-phase-noise PLL supplies without added filtering. |
| High PSRR | 98 dB at 1 kHz rejects ripple from noisy buck converters, reducing need for multi-stage LC filtering in compact layouts. |
| No active discharge | "B" variant eliminates internal discharge path-prevents unintended VOUT collapse during enable transitions, simplifying power sequencing in multi-rail systems. |
| Stable with 1 µF ceramics | Eliminates requirement for large or specialized ESR capacitors, lowering BOM cost and board area vs. legacy LDOs needing ≥10 µF. |
| Thermal shutdown | 160°C trip / 140°C reset thresholds protect against sustained overload or poor heatsinking in sealed enclosures. |
Applications
| Smartphone RF Front-End | Industrial IoT Sensor Node |
|---|---|
Use Scenario: Powering LTE/Wi-Fi RF transceiver bias rails in thin-profile smartphones. IC Role / Device Role / Timing Role: Low-noise, low-dropout voltage source for PA driver stages and LNA bias networks. Use Value: 10 µVRMS noise prevents reciprocal mixing degradation; 80 mV dropout maintains regulation down to 3.58 V input during battery sag. | Use Scenario: Supplying precision analog front-end (AFE) and sub-GHz wireless SoC in battery-operated environmental monitors. IC Role / Device Role / Timing Role: Stable 3.5 V rail for 24-bit sigma-delta ADC reference and RF transceiver VDDIO. Use Value: 18 µA quiescent current extends 10-year battery life; ±2% accuracy ensures consistent sensor calibration across temperature. |
| Medical Wearable ECG Amplifier | Automotive Cabin Camera Module |
Use Scenario: Biasing ultra-low-noise instrumentation amplifiers in dry-electrode ECG patches. IC Role / Device Role / Timing Role: Clean analog supply for op-amp gain stages and ADC drivers. Use Value: 98 dB PSRR isolates amplifier from digital MCU noise; 1 µF ceramic compatibility reduces solution size to fit <5 mm² PCB area. | Use Scenario: Providing regulated 3.5 V to image signal processor (ISP) and CMOS image sensor in AEC-Q200-qualified cabin cameras. IC Role / Device Role / Timing Role: Secondary LDO for noise-sensitive imaging chain downstream of main PMIC. Use Value: Thermal shutdown (160°C) protects against lens housing overheating; XDFN4 package withstands reflow and mechanical stress per automotive standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCP160AMX350TBG | Same 3.5 V output, XDFN4 package, but includes active output discharge (280 Ω path). | Required where rapid VOUT discharge during shutdown is needed to meet system-level safety or sequencing requirements. | Select NCP160AMX350TBG only if active discharge is explicitly required; otherwise NCP160BMX350TBG reduces complexity and leakage. |
| TPL7407LDR | 300 mA, 3.5 V fixed, 12 µA IQ, but lower PSRR (70 dB @ 1 kHz) and higher noise (25 µVRMS). | Suitable for less noise-sensitive digital I/O rails or general-purpose logic, not RF/analog circuits. | Choose TPL7407LDR for cost-sensitive, non-critical rails; avoid for RF bias or precision analog where NCP160BMX350TBG's 98 dB PSRR and 10 µVRMS are mandatory. |
Compared with NCP160AMX350TBG, the NCP160BMX350TBG removes active discharge-reducing standby leakage and simplifying sequencing-while retaining identical noise, PSRR, and dropout performance. Versus TPL7407LDR, it delivers superior RF-grade noise suppression and tighter output regulation at the cost of slightly higher quiescent current.
Availability
NCP160BMX350TBG is available at Aetrix Electronics and suitable for smartphone RF front-ends, industrial IoT sensor nodes, and medical wearable ECG amplifiers requiring stable component supply, long-term lifecycle support, and automotive-qualified packaging.
Supply support for NCP160BMX350TBG 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, sensors, and connectivity solutions for automotive, industrial, and cloud infrastructure markets.
The NCP160 product line targets ultra-low-noise, high-PSRR LDO regulation for RF and precision analog circuits-designed specifically to replace legacy regulators in battery-powered portable and wireless devices demanding minimal footprint and maximum signal integrity.
FAQ
What is the output voltage tolerance of the NCP160BMX350TBG over temperature and load?
The NCP160BMX350TBG provides ±2% output voltage accuracy across the full operating junction temperature range (−40°C to +125°C) and full load range (0–250 mA), as specified in the Electrical Characteristics table. This tight tolerance ensures reliable biasing of 3.3 V–3.6 V analog/RF ICs without requiring post-regulation trimming or calibration.
Does the NCP160BMX350TBG include active output discharge functionality?
No, the NCP160BMX350TBG does not include active output discharge. The "B" suffix denotes the non-active-discharge variant; when disabled via the EN pin, the output floats rather than being pulled to GND through an internal resistor. This behavior is confirmed in the Ordering Information table and Applications Information section of the datasheet.
What is the minimum input voltage required for the NCP160BMX350TBG to maintain regulation at 250 mA load?
The NCP160BMX350TBG requires a minimum input voltage of 3.58 V to maintain regulation at 250 mA load, based on its 80 mV dropout voltage (VDO) at that current. With a nominal 3.5 V output, VIN must exceed VOUT + VDO = 3.5 V + 0.08 V = 3.58 V. This allows operation from partially discharged single-cell Li-ion batteries (down to ~3.6 V).
Which capacitor types and values are recommended for stable operation of the NCP160BMX350TBG?
The NCP160BMX350TBG is designed for stability with 1 µF X5R or X7R ceramic capacitors on both input (CIN) and output (COUT). These must be placed as close as possible to their respective pins. The device remains stable down to 0.7 µF effective capacitance, accounting for DC bias derating-especially important for 0201-size MLCCs.
How does the thermal performance of the NCP160BMX350TBG compare between XDFN4 and WLCSP packages?
The XDFN4 package used by NCP160BMX350TBG has a junction-to-ambient thermal resistance (RJA) of 198.1°C/W (per JEDEC JESD51-7 test board), significantly higher than the WLCSP4 variant (108°C/W). This means the XDFN4 requires more PCB copper area or thermal vias to achieve equivalent power dissipation-designers should follow layout recommendations including EPAD grounding and 2 oz copper pours.
NCP160BMX350TBG 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):
- 3.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.14V @ 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)
NCP160BMX350TBG FAQ
1.How can I place an order for NCP160BMX350TBG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP160BMX350TBG 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 NCP160BMX350TBG reliable?
The price and inventory of NCP160BMX350TBG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP160BMX350TBG is usually 5 days.
3.What payment methods are accepted for NCP160BMX350TBG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP160BMX350TBG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP160BMX350TBG?
NCP160BMX350TBG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP160BMX350TBG 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 NCP160BMX350TBG?
For technical support, including NCP160BMX350TBG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP160BMX350TBG requirements.
6.How does Aetrix verify that NCP160BMX350TBG is sourced from the original manufacturer or authorized distributors?
All NCP160BMX350TBG 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 NCP160BMX350TBG meets industry standards.
7.What is the process for return or replacement of NCP160BMX350TBG?
All NCP160BMX350TBG units undergo pre-shipment inspection (PSI). If there is an issue with NCP160BMX350TBG, 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 NCP160BMX350TBG part is unused and in its original packaging.
Return procedure for NCP160BMX350TBG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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