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onsemi NCP629FC15T2G
- Part No.:
- NCP629FC15T2G
- Manufacturer:
- onsemi
- Package:
- 5-UFBGA, FCBGA
- Datasheet:
-
NCP629FC15T2G.pdf
- Description:
- IC REG LIN 1.5V 150MA 5FLIPCHIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,659
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Product details
Overview
NCP629FC15T2G from onsemi is a fixed 1.5 V, 150 mA CMOS low-dropout (LDO) regulator in a 5-pin flip-chip CSP package (Case 499AY), featuring 150 mV dropout at full load, 15 µs enable turn-on time, and ±2% output voltage tolerance over -40°C to 125°C - deployed in portable RF subsystems requiring ultra-low noise and fast power sequencing.
For engineers reviewing the NCP629FC15T2G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout performance at 150 mA, ESD robustness (HBM 3.5 kV), thermal shutdown behavior (175°C), ground current in run mode (135–170 µA), and compatibility with 1.0 µF ceramic output capacitors without minimum ESR requirements.
Technical Context
The NCP629FC15T2G integrates a precision bandgap reference, error amplifier, and PMOS pass transistor with internal current limiting and thermal shutdown. Its enable input supports sub-1 V logic thresholds (0.4 V low, 0.9 V high) and draws only 3–100 nA bias current.
Designed for battery-powered systems, it operates across 1.5 V to 6.0 V input while maintaining regulation down to VOUT + VDO (1.65 V min at 150 mA). Output stability is guaranteed with 1.0 µF ceramic capacitors regardless of ESR, eliminating need for external noise-reduction caps.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5 V ±2% over -40°C to 125°C - ensures stable core supply for low-voltage digital ICs |
| Max Output Current | 150 mA - sufficient for baseband processors or RF front-end bias rails |
| Dropout Voltage | 150 mV at 150 mA - enables operation from single-cell Li-ion (3.0 V) or dual-cell NiMH (2.4 V) |
| Enable Threshold | Logic-low ≤0.4 V, logic-high ≥0.9 V - compatible with 1.2 V/1.8 V I/O domains |
| Noise Voltage | 50 µVrms (10 Hz–100 kHz) - meets VCO and RF LNA supply noise requirements |
| Thermal Shutdown | Activates at 175°C with 10°C hysteresis - prevents latch-up during transient overload |
| ESD Protection | HBM 3.5 kV, MM 400 V - exceeds AEC-Q100 stress levels for handheld assembly |
Pinout & Package
Package: 5-pin flip-chip CSP (Case 499AY), dimensions 1.028 mm × 1.190 mm × 0.6 mm max height, Pb-free, MSL1/260°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| C3 | Vin | Positive input supply - must be decoupled with ≥1.0 µF ceramic capacitor adjacent to pin |
| A1 | GND | Power ground and substrate connection - forms primary thermal path to PCB copper |
| A3 | ENABLE | Active-high enable control - pulled to Vin for always-on operation; <0.4 V disables regulator |
| B2 | NC | No internal connection - must remain unconnected per datasheet |
| C1 | Vout | Regulated 1.5 V output - drives load directly; stable with 1.0–10 µF ceramic capacitors |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 150 mV at 150 mA enables use with depleted batteries or low-headroom supplies |
| Fast enable response | 15 µs turn-on time supports dynamic power gating in portable SoC subsystems |
| No-ESR capacitor support | Stable with 1.0 µF ceramic output caps - eliminates tantalum cost and reliability risk |
| Low-noise operation | 50 µVrms noise without bypass cap - avoids added board area and startup delay |
| Enhanced ESD protection | HBM 3.5 kV rating reduces field failure risk during manual handling and board assembly |
Applications
| RF Power Amplifier Bias | VCO Supply Rail |
|---|---|
Use Scenario: Powers PA driver stage in cellular handset front-end where supply ripple directly impacts ACLR. IC Role / Device Role / Timing Role: Low-noise, fast-enabling LDO providing clean 1.5 V bias under dynamic PA load modulation. Use Value: 50 µVrms noise and 15 µs enable ensure minimal spectral regrowth and rapid transmit burst readiness. | Use Scenario: Supplies voltage-controlled oscillator in Bluetooth/Wi-Fi transceivers sensitive to supply-induced phase noise. IC Role / Device Role / Timing Role: Ultra-stable 1.5 V reference rail with tight line/load regulation (<10 mV variation). Use Value: ±2% output tolerance and 62 dB PSRR at 120 Hz suppress supply-coupled jitter in VCO tuning voltage. |
| MP3 Player Core Logic | Digital Camera Image Sensor Interface |
Use Scenario: Powers ARM Cortex-M0 microcontroller core in portable audio players with intermittent wake/sleep cycles. IC Role / Device Role / Timing Role: Enable-controlled LDO delivering regulated 1.5 V during active decode, disabled during standby. Use Value: Sub-1 µA disable current and 15 µs wake-up minimize system-level quiescent power and latency. | Use Scenario: Supplies CIS interface logic (LVDS serializer, timing controller) requiring glitch-free power during image capture bursts. IC Role / Device Role / Timing Role: Fast-transient LDO with overshoot clamp circuit preventing >20 mV output excursion during load steps. Use Value: Active clamp and 1.0 µF ceramic stability ensure no frame corruption during sensor readout current surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1502E/TT | 250 mV dropout at 250 mA; 6 µA quiescent current; SOT-23-5 package | Larger footprint; higher dropout limits use in low-Vin battery scenarios | Prefer when ultra-low IQ dominates over size/noise; verify thermal derating at 150 mA |
| Torex XC6206P152MR-G | 200 mV dropout at 150 mA; 1.0 µF ceramic stable; SOT-25 package | Same 1.5 V output but lacks ESD rating >2 kV HBM and thermal hysteresis spec | Acceptable for non-handheld industrial use; avoid where ESD robustness is critical |
Compared with NCP629FC15T2G, MCP1700T-1502E/TT trades smaller dropout margin and larger package for lower IQ, while XC6206P152MR-G matches output and stability but omits enhanced ESD and thermal hysteresis - making NCP629FC15T2G optimal for space-constrained, high-reliability portable RF designs.
Availability
NCP629FC15T2G is available at Aetrix Electronics and suitable for portable RF subsystems, battery-powered imaging interfaces, and low-voltage microcontroller core supplies requiring stable component supply, consistent parametric performance, and long-term obsolescence management.
Supply support for NCP629FC15T2G 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 portable electronics.
The NCP629 series belongs to onsemi's high-performance LDO portfolio targeting portable battery-powered devices, emphasizing ultra-low noise, fast enable response, and chip-scale packaging for space-constrained RF and audio applications.
FAQ
What is the maximum input voltage rating for the NCP629FC15T2G?
The NCP629FC15T2G has an absolute maximum input voltage of 6.5 V. However, its recommended operating input range is 1.5 V to 6.0 V. Operation below 1.5 V is not guaranteed due to dropout constraints - minimum valid Vin equals the greater of 1.5 V or (Vout + VDO), i.e., 1.65 V at 150 mA load. Exceeding 6.5 V risks permanent damage per Absolute Maximum Ratings.
Does the NCP629FC15T2G require an external bypass capacitor for noise reduction?
No, the NCP629FC15T2G does not require an external noise-reduction capacitor. It achieves 50 µVrms output noise (10 Hz–100 kHz) without one, unlike many competing LDOs. This eliminates added board area, cost, and startup delay associated with external bypass caps - a key design advantage confirmed in the Applications Information section of the datasheet.
What is the thermal shutdown behavior of the NCP629FC15T2G?
The NCP629FC15T2G activates thermal shutdown at approximately 175°C junction temperature and includes 10°C hysteresis, meaning it resumes regulation only after cooling to ~165°C. This protects against sustained overload or poor PCB thermal design. The device's RJA is 277°C/W on a 645 mm², 1 oz copper board - allowing up to 360 mW dissipation at 25°C ambient before reaching TJ(max).
Can the NCP629FC15T2G operate with a 1.0 µF ceramic output capacitor?
Yes, the NCP629FC15T2G is explicitly characterized and guaranteed stable with a 1.0 µF ceramic output capacitor - no minimum ESR requirement. Figure 23 in the datasheet confirms stability across ESR values from 0.01 Ω to 10 Ω at all output currents. This simplifies design, reduces BOM count, and improves reliability versus tantalum alternatives.
What is the function of the NC pin (B2) on the NCP629FC15T2G?
The B2 pin on the NCP629FC15T2G is designated "No Connection" and must remain unconnected in the PCB layout. It has no internal bond wire or circuit connection, as confirmed in the Pin Function Description table (page 2) and Absolute Maximum Ratings section. Routing or soldering to this pin may compromise thermal performance or cause unintended electrical coupling.
NCP629FC15T2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 5-UFBGA, FCBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 1.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.225V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 170 µA
- Current - Supply (Max):
- -
- PSRR:
- 62dB ~ 38dB (120Hz ~ 10kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 5-FlipChip (1.028x1.19)
NCP629FC15T2G FAQ
1.How can I place an order for NCP629FC15T2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP629FC15T2G 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 NCP629FC15T2G reliable?
The price and inventory of NCP629FC15T2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP629FC15T2G is usually 5 days.
3.What payment methods are accepted for NCP629FC15T2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP629FC15T2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP629FC15T2G?
NCP629FC15T2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP629FC15T2G 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 NCP629FC15T2G?
For technical support, including NCP629FC15T2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP629FC15T2G requirements.
6.How does Aetrix verify that NCP629FC15T2G is sourced from the original manufacturer or authorized distributors?
All NCP629FC15T2G 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 NCP629FC15T2G meets industry standards.
7.What is the process for return or replacement of NCP629FC15T2G?
All NCP629FC15T2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP629FC15T2G, 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 NCP629FC15T2G part is unused and in its original packaging.
Return procedure for NCP629FC15T2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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