My Inquiry
My Account
onsemi NCP500SQL27T1G
- Part No.:
- NCP500SQL27T1G
- Manufacturer:
- onsemi
- Package:
- 6-VDFN Exposed Pad
- Datasheet:
-
NCP500SQL27T1G.pdf
- Description:
- IC REG LINEAR 2.7V 150MA 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,950
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
NCP500SQL27T1G from onsemi is a fixed-output, low-noise, low-dropout linear regulator delivering 150 mA with 2.7 V output, ultra-low 170 mV dropout at full load, 50 µV RMS noise (10 Hz–100 kHz, no bypass cap), and fast 20 µs enable turn-on. It targets noise-sensitive RF stages, VCO power, and portable instrumentation where stable, clean voltage is critical.
For engineers reviewing the NCP500SQL27T1G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout performance at 150 mA, enable logic compatibility down to 1.0 V, thermal shutdown behavior, and DFN 2×2.2 mm footprint suitability for space-constrained handheld designs.
Technical Context
The NCP500SQL27T1G uses a PMOS pass transistor architecture enabling ultra-low dropout and eliminating the need for an external noise-bypass capacitor. Its internal voltage reference, error amplifier, and protection circuits (current limit, thermal shutdown) operate across 1.8–6.0 V input range while maintaining ±2.5% output accuracy over −40°C to +85°C.
Enable functionality is directly compatible with 1.0 V logic; threshold is defined at 0.9 V (turn-on) and 0.15 V (turn-off). Quiescent current remains as low as 0.01 µA in shutdown and rises to only 185 µA at 150 mA load, supporting battery longevity in always-on portable systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.7 V ±2.5% (2.633–2.768 V) over −40°C to +85°C, 1–150 mA load - ensures stable bias for RF ICs and precision analog circuitry. |
| Dropout Voltage | 170 mV at 150 mA (typical), 260 mV max - enables operation from single-cell Li-ion (3.0 V min) with >200 mV headroom at full load. |
| Noise (RMS) | 50 µV (10 Hz–100 kHz, no bypass cap) - eliminates need for external noise filter, critical for VCO phase noise and ADC reference stability. |
| Enable Threshold | 0.9 V (turn-on), 0.15 V (turn-off) - supports direct interface with 1.0 V logic families without level-shifting. |
| Quiescent Current | 185 µA at 150 mA load, 0.01 µA in shutdown - minimizes standby drain in battery-powered devices with frequent sleep/wake cycles. |
| Ripple Rejection | 62 dB at 1 kHz - suppresses switching noise from upstream DC/DC converters in SMPS post-regulation applications. |
| Operating Input Range | 1.8 V to 6.0 V - accommodates wide battery chemistries (Li-ion, Li-poly, NiMH) and intermediate rail voltages. |
Pinout & Package
Package: DFN 2×2.2 mm, 6-pin, exposed thermal pad (Case 506BA). Pin 6 is GND and shares thermal connection with the die paddle.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vin | Positive input supply; must be decoupled with ≥1.0 µF ceramic capacitor placed adjacent to pin. |
| 2 | GND | Power ground; connects to PCB thermal pad for optimal heat dissipation and noise control. |
| 3 | Enable | Active-high logic input; pulled to Vin if unused; slew rate >10 mV/s required for reliable transition. |
| 4 | Vout | Regulated 2.7 V output; requires ≥1.0 µF output capacitor; stable with zero-ESR ceramics. |
| 5 | N/C | No internal connection; must remain unconnected per datasheet - not a second GND or feedback node. |
| 6 | GND | Dedicated ground terminal tied to thermal pad; improves thermal resistance (RJA = 225°C/W) and PSRR. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 170 mV at 150 mA enables use with <3.0 V input sources while sustaining full rated current. |
| No external bypass capacitor | 50 µV RMS noise achieved internally - reduces BOM count, board area, and startup delay (20 µs). |
| 1.0 V logic-compatible enable | 0.9 V turn-on threshold allows direct drive from low-voltage microcontrollers and ASICs. |
| Thermal & current protection | Internal shutdown at ~160°C and current limiting up to 700 mA prevent damage during fault conditions. |
| Stable with ceramic capacitors | Zero minimum ESR requirement simplifies design and improves transient response vs. tantalum alternatives. |
Applications
| RF Power Amplifier Bias | VCO Core Supply |
|---|---|
Use Scenario: Providing clean, low-noise bias to GaAs or SiGe RF power amplifiers in cellular handsets and IoT transceivers. IC Role / Device Role / Timing Role: Low-dropout voltage regulator supplying stable 2.7 V to PA collector/drain with minimal ripple-induced AM-to-PM distortion. Use Value: 62 dB ripple rejection and 50 µV RMS noise preserve EVM and ACLR performance under dynamic load conditions. | Use Scenario: Powering the core tuning circuitry of voltage-controlled oscillators in PLL-based frequency synthesizers. IC Role / Device Role / Timing Role: Ultra-low-noise LDO delivering 2.7 V to VCO varactor and active devices to minimize phase jitter. Use Value: Absence of external bypass capacitor avoids start-up delay and parasitic resonance that degrade close-in phase noise. |
| Portable Medical Sensor Node | Industrial Handheld Meter |
Use Scenario: Regulating supply for low-power ADCs, op-amps, and wireless SoCs in battery-operated patient monitors and biosensors. IC Role / Device Role / Timing Role: Primary 2.7 V rail generator with fast enable for duty-cycled measurement bursts. Use Value: 20 µs turn-on time and 185 µA quiescent current extend battery life while meeting real-time sampling deadlines. | Use Scenario: Powering display drivers, touch controllers, and MCU peripherals in rugged handheld test equipment. IC Role / Device Role / Timing Role: Main system LDO providing 2.7 V to mixed-signal subsystems with high line/load regulation. Use Value: ±10 mV load regulation and ±1.0 mV line regulation ensure consistent display contrast and sensor accuracy across battery discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-2702E/TT | 250 mA rating, 1.6 µA quiescent current (shutdown), but higher 250 mV dropout at 250 mA and no enable pin. | Lacks enable control and has lower noise (30 µV) but reduced current capability and no thermal shutdown flag. | Select when ultra-low IQ dominates over enable control and 150 mA is sufficient. |
| TLS820B27TAV50 | Automotive-grade AEC-Q100, 200 mA, integrated watchdog and reset, but 300 mV dropout and 60 µV noise. | Includes safety features (reset, window watchdog) for ASIL-B systems, but larger TSON-10 package and higher cost. | Select for automotive body electronics requiring functional safety compliance and extended temperature support. |
Compared with MCP1700T-2702E/TT and TLS820B27TAV50, the NCP500SQL27T1G offers the best balance of ultra-low dropout (170 mV), integrated enable, and proven RF noise performance in a compact DFN - ideal for portable, battery-sensitive, noise-critical applications where space and startup speed matter.
Availability
NCP500SQL27T1G is available at Aetrix Electronics and suitable for RF front-end biasing, portable medical sensing, and industrial handheld instrumentation requiring stable component supply, long-term lifecycle support, and Pb-free compliance.
Supply support for NCP500SQL27T1G 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 NCP500 series is designed specifically for portable battery-powered systems demanding ultra-low noise, fast enable response, and minimal dropout - targeting RF, audio, and precision analog subsystems where clean, responsive power is non-negotiable.
FAQ
What is the maximum input voltage rating for the NCP500SQL27T1G?
The NCP500SQL27T1G has an absolute maximum input voltage rating of 6.0 V. Operation above this level risks permanent damage. For inputs exceeding 6.0 V, an external pre-regulator (e.g., resistor-Zener or simple transistor stage) is required before the NCP500SQL27T1G input pin, as documented in Figure 34 of the datasheet.
Does the NCP500SQL27T1G require an external bypass capacitor to achieve its specified 50 µV RMS noise?
No, the NCP500SQL27T1G achieves its 50 µV RMS noise (10 Hz–100 kHz) without any external bypass capacitor due to its internal low-noise architecture. Adding one provides no benefit and may degrade startup time or stability - the device is explicitly characterized and guaranteed for noise performance with only the required 1.0 µF input and output ceramic capacitors.
What is the thermal shutdown threshold and recovery behavior of the NCP500SQL27T1G?
The NCP500SQL27T1G incorporates internal thermal shutdown that activates at approximately 160°C junction temperature. Once triggered, the output is disabled until the die cools sufficiently - typically requiring several seconds of thermal recovery depending on PCB layout and ambient conditions. The device does not auto-restart; it resumes regulation only after the enable pin is cycled or the input is power-cycled.
Can the NCP500SQL27T1G be used with ceramic output capacitors smaller than 1.0 µF?
No - the datasheet specifies a minimum output capacitance of 1.0 µF for stability and transient performance. Using less than 1.0 µF risks instability, excessive overshoot/undershoot during load steps, and potential oscillation. The device is optimized for 1.0–10 µF ceramic capacitors with zero minimum ESR, and Figure 29 confirms stability only within that range.
How is the Enable pin of the NCP500SQL27T1G configured when not actively controlled?
When the Enable pin is not used for active control, it must be connected directly to Vin to ensure the regulator remains enabled at all times. Leaving the pin floating is prohibited - it may cause erratic output behavior or unintended shutdown due to noise coupling. The internal pull-down is insufficient to guarantee a defined state, so a hard tie to Vin is mandatory per the datasheet's "Enable Operation" section.
NCP500SQL27T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 6-VDFN Exposed Pad
- 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):
- 2.7V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.26V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 1 µA
- Current - Supply (Max):
- 300 µA
- PSRR:
- 62dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-DFN (2x2.2)
NCP500SQL27T1G FAQ
1.How can I place an order for NCP500SQL27T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP500SQL27T1G 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 NCP500SQL27T1G reliable?
The price and inventory of NCP500SQL27T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP500SQL27T1G is usually 5 days.
3.What payment methods are accepted for NCP500SQL27T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP500SQL27T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP500SQL27T1G?
NCP500SQL27T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP500SQL27T1G 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 NCP500SQL27T1G?
For technical support, including NCP500SQL27T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP500SQL27T1G requirements.
6.How does Aetrix verify that NCP500SQL27T1G is sourced from the original manufacturer or authorized distributors?
All NCP500SQL27T1G 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 NCP500SQL27T1G meets industry standards.
7.What is the process for return or replacement of NCP500SQL27T1G?
All NCP500SQL27T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP500SQL27T1G, 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 NCP500SQL27T1G part is unused and in its original packaging.
Return procedure for NCP500SQL27T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NCP500SQL27T1G Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
