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onsemi NCP583SQ33T1G
- Part No.:
- NCP583SQ33T1G
- Manufacturer:
- onsemi
- Package:
- SC-82A, SOT-343
- Datasheet:
-
NCP583SQ33T1G.pdf
- Description:
- IC REG LINEAR 3.3V 150MA SC82AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,873
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Product details
Overview
NCP583SQ33T1G from onsemi is an ultra-low quiescent current (1.0 µA typical), 3.3 V fixed-output CMOS low-dropout (LDO) regulator in SC−82AB package, delivering up to 150 mA with 250 mV dropout at full load and ±2% output voltage accuracy-designed for battery-powered portable equipment requiring long standby life and stable rail generation.
For engineers reviewing the NCP583SQ33T1G datasheet, pinout, applications, or equivalent options, key selection criteria include shutdown current (0.1 µA), thermal resistance (263°C/W), enable threshold compatibility (1.2–6.0 V logic-high), and ceramic capacitor stability (1.0 µF recommended output).
Technical Context
The NCP583SQ33T1G integrates a precision bandgap reference, error amplifier, and PMOS pass transistor in a single-stage LDO architecture. Its enable input controls internal biasing to reduce Iq to 0.1 µA in shutdown, while foldback current limiting protects against output short circuits.
It operates across −40°C to +85°C ambient temperature with ±100 ppm/°C output voltage drift and supports input voltages from 1.7 V to 6.0 V. Ripple rejection reaches 60 dB at 1 kHz (with 1.0 µF output capacitor), making it suitable for noise-sensitive analog and RF subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±2% - ensures reliable logic-level compliance for 3.3 V microcontrollers and sensors. |
| Max Output Current | 150 mA - sufficient for powering small MCU cores, RF transceivers, or sensor signal chains. |
| Dropout Voltage | 250 mV at 150 mA - enables operation down to Vin = 3.55 V, extending battery runtime in single-cell Li-ion or 3×AA systems. |
| Quiescent Current | 1.0 µA typical - minimizes standby power loss, critical for multi-year battery life in IoT endpoints. |
| Shutdown Current | 0.1 µA typical - reduces system leakage when host controller disables the rail via CE pin. |
| Line Regulation | 0.05%/V - maintains tight output stability despite battery voltage sag during discharge. |
| Load Regulation | 20 mV (1 µA–150 mA) - limits output shift under dynamic load changes, supporting burst-mode peripherals. |
Pinout & Package
SC−82AB package (Case 419C), 4-pin surface-mount, 2.0 × 1.25 × 0.95 mm footprint with exposed pad for thermal enhancement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Vin) | Input power supply | Accepts 1.7–6.0 V DC; requires 1.0 µF ceramic decoupling to GND per layout guidelines. |
| 2 (GND) | Power ground reference | Primary return path for input/output currents; must be connected to low-impedance PCB ground plane. |
| 3 (Vout) | Regulated output | Delivers stable 3.3 V; requires 0.1 µF ceramic capacitor close to pin for transient response. |
| 4 (CE) | Chip enable control | Active-high logic input; drives high (>1.2 V) to enable regulation, low (<0.3 V) to enter 0.1 µA shutdown. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low Iq | 1.0 µA typical enables >10-year battery life in always-on sensor nodes with 220 mAh coin cells. |
| Foldback protection | Reduces short-circuit current to ~40 mA, preventing thermal runaway during output faults. |
| Low temperature drift | ±100 ppm/°C ensures <±2.5 mV output shift over −40°C to +85°C, critical for precision ADC references. |
| Wide input range | 1.7–6.0 V input supports direct connection to Li-ion, Li-Po, or 3× alkaline batteries without pre-regulation. |
| Pb-free & RoHS compliant | Meets global environmental standards; qualified for reflow soldering per J-STD-020 moisture sensitivity level MSL3. |
Applications
| Wearable Health Monitors | Wireless Sensor Nodes |
|---|---|
|
Use Scenario: Continuous ECG/PPG sensing with Bluetooth LE transmission in wrist-worn devices. IC Role / Device Role / Timing Role: Primary 3.3 V power rail for ultra-low-power MCU and analog front-end. Use Value: 1.0 µA quiescent current extends coin-cell lifetime beyond 2 years in sleep-dominated duty cycles. |
Use Scenario: Battery-operated industrial temperature/humidity node transmitting hourly via LoRaWAN. IC Role / Device Role / Timing Role: Stable 3.3 V supply for sensor interface, MCU, and sub-GHz transceiver. Use Value: 250 mV dropout allows operation until battery voltage drops to 3.55 V, maximizing usable capacity. |
| Portable Medical Instruments | Handheld Test Equipment |
|
Use Scenario: Pocket-sized pulse oximeter with OLED display and optical sensor array. IC Role / Device Role / Timing Role: Low-noise 3.3 V rail for analog signal conditioning and display driver IC. Use Value: 60 dB ripple rejection at 1 kHz suppresses switching noise from adjacent DC-DC converters. |
Use Scenario: Battery-powered multimeter with auto-ranging ADC and LCD controller. IC Role / Device Role / Timing Role: Precision 3.3 V reference source for 16-bit SAR ADC and digital logic. Use Value: ±2% output accuracy and ±100 ppm/°C drift ensure measurement repeatability across operating temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3302E/TT | 1.6 µA Iq, 200 mV dropout at 250 mA, SOT-23-5 package, no foldback protection. | Higher output current but larger footprint and less robust fault handling. | Prefer when higher load headroom is needed and board space permits SOT-23-5. |
| Torex XC6206P332MR-G | 1.0 µA Iq, 300 mV dropout at 100 mA, SOT-25 package, no enable pin. | Lacks CE functionality; requires external MOSFET for shutdown control. | Choose only if enable control is unnecessary and minimal BOM count is prioritized. |
Compared with MCP1700T-3302E/TT and XC6206P332MR-G, the NCP583SQ33T1G uniquely combines ultra-low Iq, integrated enable, foldback protection, and SC−82AB's compact size-making it optimal for space-constrained, battery-limited designs requiring full feature integration.
Availability
NCP583SQ33T1G is available at Aetrix Electronics and suitable for wearable health monitors, wireless sensor nodes, portable medical instruments, and handheld test equipment requiring stable component supply, long-term lifecycle support, and Pb-free compliance.
Supply support for NCP583SQ33T1G 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 electronics, with leadership in power management, analog, and sensor technologies.
The NCP583 series belongs to onsemi's ultra-low-Iq LDO portfolio, engineered specifically for battery-powered portable and IoT edge devices where standby power, small size, and reliability are non-negotiable.
FAQ
What is the maximum input voltage rating for the NCP583SQ33T1G?
The NCP583SQ33T1G has a maximum input voltage rating of 6.5 V, with recommended operating input range specified as 1.7 V to 6.0 V in electrical characteristics. Exceeding 6.5 V may damage the device, and operation below 1.7 V will not sustain regulated 3.3 V output due to dropout constraints. The NCP583SQ33T1G is rated for continuous operation within this validated window under all temperature conditions.
Does the NCP583SQ33T1G require an external capacitor on the output pin?
Yes, the NCP583SQ33T1G requires a minimum 0.1 µF ceramic capacitor on the Vout pin for stability and transient response, with 1.0 µF recommended for optimal performance. The datasheet specifies that using a low-ESR ceramic capacitor placed close to the Vout and GND pins is essential to prevent oscillation and ensure fast load-step recovery. The NCP583SQ33T1G does not function reliably without this external output capacitance.
What is the enable pin logic polarity and threshold for the NCP583SQ33T1G?
The NCP583SQ33T1G features an active-high enable (CE) pin with a logic-high threshold of 1.2 V minimum and logic-low threshold of 0.3 V maximum. When CE ≥ 1.2 V, the device regulates; when CE ≤ 0.3 V, it enters shutdown with 0.1 µA typical current draw. The NCP583SQ33T1G is designed to interface directly with standard GPIO outputs without level-shifting circuitry.
Can the NCP583SQ33T1G be used with a 1.5 V input supply?
No, the NCP583SQ33T1G cannot regulate 3.3 V output from a 1.5 V input. Its minimum input voltage is 1.7 V (per Electrical Characteristics table), and its dropout voltage is 250 mV at 150 mA - meaning Vin must be ≥ 3.55 V to maintain regulation. At 1.5 V input, the NCP583SQ33T1G will be in dropout or unregulated state and cannot deliver 3.3 V. The NCP583SQ33T1G is intended for use with ≥2-cell alkaline, Li-ion, or regulated intermediate rails.
Is the NCP583SQ33T1G pin-compatible with other variants in the NCP583 family?
Yes, the NCP583SQ33T1G shares identical SC−82AB pinout and footprint with all SQ-suffix NCP583 variants (e.g., NCP583SQ15T1G, NCP583SQ28T1G), enabling drop-in replacement across output voltages without PCB redesign. All SQ variants use Pin 1 (Vin), Pin 2 (GND), Pin 3 (Vout), Pin 4 (CE) configuration and match mechanical dimensions per Case 419C. The NCP583SQ33T1G maintains full functional and layout compatibility within its suffix group.
NCP583SQ33T1G 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):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.4V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 1.5 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Enable
- Protection Features:
- Over Current
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-82AB
NCP583SQ33T1G FAQ
1.How can I place an order for NCP583SQ33T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP583SQ33T1G 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 NCP583SQ33T1G reliable?
The price and inventory of NCP583SQ33T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP583SQ33T1G is usually 5 days.
3.What payment methods are accepted for NCP583SQ33T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP583SQ33T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP583SQ33T1G?
NCP583SQ33T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP583SQ33T1G 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 NCP583SQ33T1G?
For technical support, including NCP583SQ33T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP583SQ33T1G requirements.
6.How does Aetrix verify that NCP583SQ33T1G is sourced from the original manufacturer or authorized distributors?
All NCP583SQ33T1G 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 NCP583SQ33T1G meets industry standards.
7.What is the process for return or replacement of NCP583SQ33T1G?
All NCP583SQ33T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP583SQ33T1G, 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 NCP583SQ33T1G part is unused and in its original packaging.
Return procedure for NCP583SQ33T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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