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onsemi NCP582DXV28T2G
- Part No.:
- NCP582DXV28T2G
- Manufacturer:
- onsemi
- Package:
- SOT-563, SOT-666
- Datasheet:
-
NCP582DXV28T2G.pdf
- Description:
- IC REG LINEAR 2.8V 150MA SOT563
- Quantity:
- Payment:
- Shipping:
Inventory:1,898
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Product details
Overview
NCP582DXV28T2G from onsemi is a 2.8 V, 150 mA ultra-fast, low-noise CMOS LDO regulator with active-high enable and auto-discharge functionality, featuring 220 mV dropout at full load, 30 µVRMS output noise (10 Hz–100 kHz), and ±2% output voltage accuracy - deployed in battery-powered portable instrumentation requiring stable low-power rail generation.
For engineers reviewing the NCP582DXV28T2G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout performance at 150 mA, enable threshold compatibility with 1.8 V/3.3 V logic, ceramic capacitor requirements (0.47 µF output), and thermal derating in SOT-563 package for space-constrained handheld designs.
Technical Context
The NCP582DXV28T2G integrates a CMOS pass transistor with internal bandgap reference and error amplifier to deliver precise 2.8 V regulation across −40°C to +85°C ambient. Its active-high CE pin includes auto-discharge circuitry (60 Ω N-channel FET) to rapidly discharge output capacitance upon shutdown.
Designed for high PSRR (70 dB @ 1 kHz) and fast transient response, it operates with input voltages from 2.0 V to 6.0 V and supports ceramic output capacitors ≥0.47 µF - eliminating need for ESR-stabilizing tantalum or aluminum electrolytics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.8 V ±2% - ensures stable power for 2.8 V logic rails and analog sensors without external trimming. |
| Max Output Current | 150 mA - sufficient for microcontroller cores, RF front-ends, or sensor signal chains in portable devices. |
| Dropout Voltage | 220 mV @ 150 mA - enables operation down to Vin = 3.02 V, extending battery life in single-cell Li-ion or dual-cell alkaline systems. |
| Quiescent Current | 75 µA typical - minimizes standby power loss in always-on monitoring circuits. |
| PSRR | 70 dB @ 1 kHz - suppresses switching noise from DC-DC converters feeding the LDO input. |
| Output Noise | 30 µVRMS (10 Hz–100 kHz) - suitable for noise-sensitive ADC references and audio codec supplies. |
| Enable Threshold | VENH = 1.5 V min, VENL = 0.3 V max - compatible with 1.8 V and 3.3 V GPIO without level-shifting. |
| Temp Coefficient | 100 ppm/°C - maintains voltage stability over industrial temperature range without calibration. |
Pinout & Package
SOT-563 (XV suffix, Case 463A) - 6-pin, 1.6 mm × 1.2 mm × 0.6 mm surface-mount package with two ground pins for improved thermal and noise performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Vin) | Input power supply | Accepts 2.0–6.0 V; requires 1.0 µF ceramic decoupling close to pin. |
| 2 (GND) | Power ground | Primary ground return path; connects to PCB ground plane for low-impedance reference. |
| 3 (Vout) | Regulated output | Delivers 2.8 V ±2%; requires 0.47 µF ceramic capacitor placed adjacent to pin. |
| 4 (NC) | No connect | Internally unconnected; must remain floating - no routing or soldering. |
| 5 (GND) | Secondary ground | Dedicated ground pin for enhanced thermal dissipation and reduced ground bounce. |
| 6 (CE) | Active-high enable | Pull high ≥1.5 V to enable; pull low ≤0.3 V to disable with auto-discharge activation. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 220 mV @ 150 mA enables use with depleted batteries or low-headroom DC-DC outputs. |
| Auto-discharge | 60 Ω internal N-channel FET discharges Vout within microseconds after CE deactivation - prevents back-powering of upstream circuitry. |
| Low-noise regulation | 30 µVRMS noise without external bypass capacitor simplifies layout for precision analog stages. |
| High PSRR | 70 dB @ 1 kHz rejects ripple from noisy switchers, reducing need for additional filtering stages. |
| Fast transient response | Load step recovery <10 µs (1 mA ↔ 150 mA) maintains stability in dynamically loaded microcontroller systems. |
| Pb-free SOT-563 | RoHS-compliant 6-pin package supports fine-pitch automated assembly and meets IPC/JEDEC reflow standards. |
Applications
| Handheld Medical Sensors | Wearable Biometric Monitors |
|---|---|
Use Scenario: Continuous glucose monitor (CGM) using low-power ADC and Bluetooth LE radio. IC Role / Device Role / Timing Role: Primary 2.8 V supply for analog front-end and BLE SoC core voltage domain. Use Value: 220 mV dropout extends usable battery life by >15% vs. legacy LDOs; 30 µVRMS noise avoids ADC quantization errors. | Use Scenario: Optical heart-rate sensor with photodiode amplifier and MCU in compact wristband form factor. IC Role / Device Role / Timing Role: Clean 2.8 V rail for transimpedance amplifier and MCU I/O bank. Use Value: Auto-discharge prevents residual charge from interfering with sleep-mode current measurements (<1 µA target). |
| Portable Test Equipment | Industrial Handheld Scanners |
Use Scenario: Battery-operated multimeter with LCD display and precision reference IC. IC Role / Device Role / Timing Role: Regulated 2.8 V source for 24-bit delta-sigma ADC and reference buffer. Use Value: 100 ppm/°C tempco ensures <±0.5 LSB drift over operating range; 70 dB PSRR isolates ADC from digital noise. | Use Scenario: Rugged barcode scanner with laser driver and image sensor, powered by 2×AA cells. IC Role / Device Role / Timing Role: Stable 2.8 V supply for CMOS image sensor and laser diode bias control. Use Value: Fast dynamic response (<10 µs) prevents image smearing during rapid trigger events; SOT-563 footprint fits tight mechanical envelope. |
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 | 250 mV dropout @ 250 mA; 17 µA IQ; no auto-discharge; SOT-23-3 | Lacks enable-controlled discharge; smaller package but single ground pin limits thermal performance. | Preferred when ultra-low IQ dominates over discharge control and thermal headroom is adequate. |
| TCS2117-2800MV | 200 mV dropout @ 150 mA; 60 µA IQ; no auto-discharge; 5-pin SOT-23 | Higher PSRR (80 dB @ 1 kHz); lacks integrated discharge FET; requires external pull-down for controlled shutdown. | Chosen when maximum ripple rejection is critical and board space allows discrete discharge circuit. |
Compared with MCP1700T-2802E/TT and TCS2117-2800MV, the NCP582DXV28T2G uniquely combines auto-discharge, 220 mV dropout, and dual-ground SOT-563 thermal design - making it optimal for space-constrained, battery-critical systems requiring clean shutdown behavior.
Availability
NCP582DXV28T2G is available at Aetrix Electronics and suitable for handheld medical sensors, wearable biometric monitors, and portable test equipment requiring stable component supply with guaranteed long-term manufacturability.
Supply support for NCP582DXV28T2G 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 delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCP582 series belongs to onsemi's precision analog power management portfolio, engineered specifically for ultra-low-noise, low-quiescent-current regulation in portable battery-powered systems where size, efficiency, and signal integrity are critical.
FAQ
What is the recommended input and output capacitor configuration for NCP582DXV28T2G?
For NCP582DXV28T2G, use a 1.0 µF ceramic capacitor between Vin and GND. For Vout = 2.8 V (>2.5 V), a 0.47 µF ceramic output capacitor is specified - placed as close as possible to the Vout and GND pins. Low-ESR X5R or X7R dielectrics are preferred to ensure stability and optimal transient response across temperature.
Does NCP582DXV28T2G require an external noise-reduction capacitor?
No, NCP582DXV28T2G achieves 30 µVRMS output noise (10 Hz–100 kHz) without any external noise-reduction capacitor. The internal design eliminates the need for a CNR pin or external bypass, simplifying bill-of-materials and PCB layout while maintaining low-noise performance for sensitive analog loads.
What is the thermal performance limitation of NCP582DXV28T2G in SOT-563 package?
In the SOT-563 package, NCP582DXV28T2G has a junction-to-ambient thermal resistance (θJA) of approximately 220°C/W. At 150 mA load with 3.8 V input (1.0 V dropout), power dissipation is ~150 mW - limiting continuous operation to ≤+65°C ambient unless PCB copper area is expanded per onsemi's recommended footprint for Case 463A.
How does the auto-discharge function operate on NCP582DXV28T2G?
When the CE pin is pulled low (≤0.3 V), NCP582DXV28T2G disables regulation and activates an internal 60 Ω N-channel FET between Vout and GND. This discharges output capacitance rapidly - typically within 10–50 µs depending on COUT value - preventing back-powering of upstream circuitry and ensuring predictable system reset behavior.
Can NCP582DXV28T2G be used with input voltages below 2.0 V?
No, NCP582DXV28T2G specifies a minimum input voltage of 2.0 V in electrical characteristics. Operation below this violates recommended conditions and may result in loss of regulation, increased dropout, or undefined enable logic behavior. For sub-2.0 V inputs, consider alternative LDOs rated for 1.7 V or lower VIN(min).
NCP582DXV28T2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOT-563, SOT-666
- 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):
- 0.35V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 95 µA
- Current - Supply (Max):
- -
- PSRR:
- 70dB ~ 60dB (1kHz ~ 10kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-563
NCP582DXV28T2G FAQ
1.How can I place an order for NCP582DXV28T2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP582DXV28T2G 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 NCP582DXV28T2G reliable?
The price and inventory of NCP582DXV28T2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP582DXV28T2G is usually 5 days.
3.What payment methods are accepted for NCP582DXV28T2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP582DXV28T2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP582DXV28T2G?
NCP582DXV28T2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP582DXV28T2G 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 NCP582DXV28T2G?
For technical support, including NCP582DXV28T2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP582DXV28T2G requirements.
6.How does Aetrix verify that NCP582DXV28T2G is sourced from the original manufacturer or authorized distributors?
All NCP582DXV28T2G 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 NCP582DXV28T2G meets industry standards.
7.What is the process for return or replacement of NCP582DXV28T2G?
All NCP582DXV28T2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP582DXV28T2G, 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 NCP582DXV28T2G part is unused and in its original packaging.
Return procedure for NCP582DXV28T2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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