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onsemi NCP580SQ28T1G
- Part No.:
- NCP580SQ28T1G
- Manufacturer:
- onsemi
- Package:
- SC-82A, SOT-343
- Datasheet:
-
NCP580SQ28T1G.pdf
- Description:
- IC REG LINEAR 2.8V 120MA SC82AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,853
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Product details
Overview
NCP580SQ28T1G from onsemi is a 2.8 V, 120 mA ultra-fast, low-noise CMOS LDO regulator with enable function, designed for portable battery-powered systems requiring precise voltage regulation, low quiescent current (90 µA), and high PSRR (70 dB at 1 kHz). It delivers stable output under dynamic load conditions in space-constrained applications such as handheld instrumentation and camcorders.
For engineers reviewing the NCP580SQ28T1G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage (180 mV at 120 mA for 2.8 V output), output noise (30 µVrms without NR cap), ±1.5% output accuracy, and SC-82AB package compatibility with tight PCB area budgets.
Technical Context
The NCP580SQ28T1G employs a CMOS pass transistor architecture enabling ultra-low dropout (180 mV @ 120 mA) and fast transient response-critical for powering noise-sensitive analog and RF circuitry in portable devices. Its internal reference and error amplifier deliver tight line regulation (0.02%/V) and load regulation (12 mV over 1–120 mA).
It integrates an active-high chip enable (CE) input with defined threshold voltages (VTHENH = 1.5 V, VTHENL = 0.3 V), supporting low-power shutdown mode with only 0.1 µA current draw. Input voltage range spans 2.2 V to 6.0 V, accommodating single-cell Li-ion, Li-polymer, or dual-cell alkaline sources.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.8 V ±1.5% - ensures stable supply for 2.8 V logic rails and analog sensors without external trimming. |
| Max Output Current | 120 mA - sufficient to power microcontrollers, RF transceivers, or sensor signal chains in compact portable designs. |
| Dropout Voltage | 180 mV @ 120 mA - enables operation down to Vin = 2.98 V, extending battery runtime in single-cell systems. |
| Quiescent Current | 90 µA @ no load - minimizes standby power loss in always-on subsystems like real-time clocks or wake-up circuits. |
| PSRR | 70 dB @ 1 kHz - suppresses switching noise from DC-DC converters upstream, preserving ADC/DAC accuracy. |
| Output Noise | 30 µVrms (10 Hz–100 kHz) - meets low-noise requirements for precision op-amps, audio codecs, and RF front-ends. |
| Enable Threshold | VTHENH = 1.5 V, VTHENL = 0.3 V - compatible with 1.8 V/3.3 V GPIO control without level-shifting. |
Pinout & Package
Package: SC-82AB (Case 419C-02), 4-pin surface-mount package measuring 1.90 mm × 1.30 mm × 0.95 mm (L×W×H), Pb-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vout | Regulated 2.8 V output; requires ≥2.2 µF ceramic capacitor placed adjacent to pin for stability and transient response. |
| 2 | GND | Power ground return; must be connected to low-impedance PCB ground plane to minimize noise coupling. |
| 3 | CE | Active-high enable input; drives device into <1 µA shutdown when pulled low; compatible with standard logic levels. |
| 4 | Vin | Input supply (2.2–6.0 V); requires 1.0 µF ceramic decoupling capacitor placed near pin to suppress high-frequency noise. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 180 mV @ 120 mA output enables use with depleting batteries while maintaining regulation. |
| Low output noise | 30 µVrms without noise-reduction capacitor simplifies BOM and layout for noise-critical analog stages. |
| Fold-back protection | Internal current limiting reduces power dissipation during short-circuit events, enhancing reliability. |
| Fast dynamic performance | Load transient recovery within microseconds (per Fig. 17) maintains system stability during processor wake/sleep cycles. |
| Low temperature drift | 100 ppm/°C output voltage drift ensures consistent accuracy across industrial temperature range (−40°C to +85°C). |
Applications
| Portable Medical Sensors | Wireless IoT End Nodes |
|---|---|
|
Use Scenario: Powering low-power biosignal amplifiers and ADCs in wearable ECG/PPG monitors. IC Role / Device Role / Timing Role: Primary 2.8 V LDO supplying analog front-end and BLE SoC core voltage domain. Use Value: 30 µVrms noise and ±1.5% accuracy preserve signal integrity for sub-microvolt biomedical measurements. |
Use Scenario: Regulating power for sub-GHz RF transceivers and microcontrollers in battery-operated smart meters. IC Role / Device Role / Timing Role: Low-quiescent-current LDO delivering clean 2.8 V to RF section during transmit bursts. Use Value: 70 dB PSRR at 1 kHz rejects switching noise from integrated DC-DC converter, improving RF sensitivity by >3 dB. |
| Industrial Handheld Scanners | Automotive Cabin Camera Modules |
|
Use Scenario: Supplying image sensor interface and laser driver circuitry in rugged barcode scanners. IC Role / Device Role / Timing Role: Stable 2.8 V source for CIS interface and timing-critical laser pulse generation. Use Value: 180 mV dropout extends operational time from 3.0 V nominal Li-ion cells down to 2.98 V cutoff. |
Use Scenario: Providing regulated 2.8 V to CMOS image sensor and ISP in AEC-Q200-qualified cabin cameras. IC Role / Device Role / Timing Role: Secondary LDO post-regulator ensuring low-noise bias for pixel array and analog video path. Use Value: −40°C to +85°C operation with 100 ppm/°C drift maintains sensor gain calibration across automotive thermal cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-2802E/TT | 2.8 V fixed, 250 mA, 6 µA Iq, but higher dropout (600 mV @ 250 mA) and lower PSRR (55 dB @ 1 kHz). | Better for ultra-low-Iq sleep modes; less suitable for high-PSRR analog rails or marginal input headroom. | Select if standby current dominates design priority and input voltage margin exceeds 0.6 V. |
| TCS2112-2.8V | 2.8 V fixed, 150 mA, 45 µA Iq, 200 mV dropout @ 150 mA, but only 50 dB PSRR and no CE pin. | Lacks enable control and offers lower noise rejection-unsuitable where upstream switching noise is present. | Choose only for simple always-on applications with ample input margin and no need for dynamic power gating. |
Compared with MCP1700T-2802E/TT and TCS2112-2.8V, the NCP580SQ28T1G uniquely balances ultra-low dropout (180 mV), high PSRR (70 dB), and integrated enable-making it optimal for noise-sensitive, battery-limited portable systems requiring both efficiency and signal fidelity.
Availability
NCP580SQ28T1G is available at Aetrix Electronics and suitable for portable medical sensors, wireless IoT end nodes, and industrial handheld scanners requiring stable component supply, long-term lifecycle support, and Pb-free compliance.
Supply support for NCP580SQ28T1G 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 innovation for automotive, industrial, cloud, and intelligent edge applications.
The NCP580 series belongs to onsemi's precision analog LDO portfolio, engineered specifically for portable and battery-constrained systems demanding low noise, low dropout, and minimal quiescent power.
FAQ
What is the maximum input voltage rating for the NCP580SQ28T1G?
The NCP580SQ28T1G has an absolute maximum input voltage of 6.5 V. Its recommended operating input range is 2.2 V to 6.0 V. Exceeding 6.5 V risks permanent damage per the Absolute Maximum Ratings table. For reliable operation with 3.3 V or 5 V supply rails, the NCP580SQ28T1G provides sufficient headroom while maintaining low dropout and high PSRR performance.
Does the NCP580SQ28T1G require an external noise-reduction capacitor?
No, the NCP580SQ28T1G achieves 30 µVrms output noise (10 Hz–100 kHz) without an external noise-reduction capacitor. This eliminates one BOM item and simplifies layout. However, a minimum 2.2 µF ceramic output capacitor is mandatory for stability and transient response-low-ESR X5R/X7R types are recommended and must be placed close to the Vout and GND pins.
What is the shutdown current consumption of the NCP580SQ28T1G?
The NCP580SQ28T1G draws only 0.1 µA typical shutdown current when the CE pin is driven low. This ultra-low value supports multi-year battery life in always-connected IoT sensors. The shutdown state is guaranteed functional across the full −40°C to +85°C ambient temperature range, and the CE pin threshold (VTHENL ≤ 0.3 V) ensures robust immunity to logic-level noise.
Can the NCP580SQ28T1G be used with ceramic output capacitors smaller than 2.2 µF?
No-onsemi specifies a minimum 2.2 µF ceramic capacitor on the Vout pin for stability and transient performance. Using smaller values (e.g., 1.0 µF) may cause oscillation or degraded load-step response, as confirmed in Figure 17 of the datasheet. The 2.2 µF requirement applies regardless of capacitor voltage rating or dielectric type, provided it is X5R/X7R with low ESR and placed within 2 mm of the Vout/GND pins.
How does the NCP580SQ28T1G perform under varying temperature conditions?
The NCP580SQ28T1G maintains ±1.5% output accuracy and exhibits only 100 ppm/°C output voltage drift across −40°C to +85°C. Typical performance data (Figures 8–9) shows <12 mV total variation over temperature at 30 mA load. This stability enables use in automotive cabin modules and industrial handhelds without external calibration, directly supporting AEC-Q200-adjacent and extended-temperature designs.
NCP580SQ28T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-82A, SOT-343
- 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):
- 2.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.28V @ 120mA
- Current - Output:
- 120mA
- Current - Quiescent (Iq):
- 160 µA
- Current - Supply (Max):
- -
- PSRR:
- 70dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-82AB
NCP580SQ28T1G FAQ
1.How can I place an order for NCP580SQ28T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP580SQ28T1G 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 NCP580SQ28T1G reliable?
The price and inventory of NCP580SQ28T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP580SQ28T1G is usually 5 days.
3.What payment methods are accepted for NCP580SQ28T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP580SQ28T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP580SQ28T1G?
NCP580SQ28T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP580SQ28T1G 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 NCP580SQ28T1G?
For technical support, including NCP580SQ28T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP580SQ28T1G requirements.
6.How does Aetrix verify that NCP580SQ28T1G is sourced from the original manufacturer or authorized distributors?
All NCP580SQ28T1G 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 NCP580SQ28T1G meets industry standards.
7.What is the process for return or replacement of NCP580SQ28T1G?
All NCP580SQ28T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP580SQ28T1G, 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 NCP580SQ28T1G part is unused and in its original packaging.
Return procedure for NCP580SQ28T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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