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onsemi NCP4589DSN30T1G
- Part No.:
- NCP4589DSN30T1G
- Manufacturer:
- onsemi
- Package:
- SC-74A, SOT-753
- Datasheet:
-
NCP4589DSN30T1G.pdf
- Description:
- IC REG LINEAR 3V 300MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,260
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Product details
Overview
NCP4589DSN30T1G from onsemi is a 300 mA tri-mode CMOS LDO voltage regulator with 3.0 V fixed output, operating from 1.4 V to 5.25 V input. It features auto-switching between low-power (1.0 µA quiescent current) and fast-response (55 µA, 70 dB PSRR at 1 kHz) modes based on load current, plus a dedicated Auto Eco (AE) pin for forced mode selection. It is used in portable image sensors and battery-powered camera modules where ultra-low standby power and fast transient response are critical.
For engineers reviewing the NCP4589DSN30T1G datasheet, pinout, applications, or equivalent options, key selection criteria include its 230 mV dropout at 300 mA (VOUT = 2.8 V), ±1% output accuracy above 2 V, stable operation with 1 µF ceramic capacitors, and SOT-23-5 package compatibility with space-constrained PCB layouts.
Technical Context
The NCP4589DSN30T1G implements a tri-mode architecture: low-power mode (≤1.0 µA IQ) below 1–2 mA load, fast mode (55 µA IGND, 70 dB PSRR) above ~8 mA, and standby mode (0.1 µA) when CE = low. Its internal N-channel pass transistor enables low dropout and supports output discharge via integrated VOUT-to-GND switch in D-version variants.
Mode transitions are controlled by real-time load monitoring and the AE pin logic level (VAEH = 1.0 V, VAEL = 0.4 V). The device achieves ±1% output voltage accuracy over −40°C to +85°C ambient and maintains stability with minimal 1 µF ceramic output capacitance without requiring ESR tuning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 300 mA max - supports moderate-power sensor rails and interface ICs without thermal derating in SOT-23-5 |
| Dropout Voltage | 230 mV typ. at 300 mA, VOUT = 2.8 V - enables regulation from 3.23 V input, critical for single-cell Li-ion systems |
| Quiescent Current | 1.0 µA in low-power mode (VOUT ≤ 1.85 V) - extends battery life in always-on imaging subsystems |
| PSRR | 70 dB at 1 kHz (fast mode) - suppresses switching noise from PMICs or DC-DC converters feeding adjacent circuits |
| Output Accuracy | ±1% for VOUT > 2 V at TJ = 25°C - ensures reliable ADC reference or core logic supply within spec |
| Operating Input Range | 1.4 V to 5.25 V - compatible with coin cells, Li-ion, and regulated 3.3 V/5 V system rails |
| Thermal Resistance | RJA = 238°C/W (SOT-23) - requires minimal copper area for 300 mA continuous operation at +85°C ambient |
Pinout & Package
Package: SOT-23-5 (Case 1212), 2.7 mm × 3.1 mm × 1.3 mm body, Pb-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply connection | Accepts 1.4–5.25 V; requires local 1 µF ceramic decoupling to minimize line transients |
| GND | Power ground reference | Low-impedance return path for VIN, VOUT, CE, and AE; must be tied to main system ground plane |
| CE | Chip enable control | Active-high logic input; internal pull-down allows direct tie to VIN for always-on operation |
| VOUT | Regulated output | 3.0 V fixed; includes integrated discharge transistor (D-version) for rapid shutdown decay |
| AE | Auto Eco mode select | Logic-controlled mode override: low = auto-switching, high = forced fast mode (no auto-sleep) |
Key Features
| Feature | Design Value |
|---|---|
| Tri-mode dynamic current optimization | Automatically reduces quiescent current to 1.0 µA under light loads (<2 mA), eliminating manual mode sequencing |
| Integrated output discharge | Active VOUT-to-GND switch discharges output capacitor rapidly during disable, preventing hold-up voltage issues |
| Ceramic capacitor stability | Stable with ≥1 µF X5R/X7R ceramic output cap - eliminates need for tantalum or ESR-tuned solutions |
| High PSRR in fast mode | 70 dB rejection at 1 kHz enables clean power delivery in noisy mixed-signal environments (e.g., near RF sections) |
| Precision output accuracy | ±1% tolerance over temperature ensures consistent performance for analog front-ends and reference-sensitive peripherals |
Applications
| Image Sensor Power | Portable Camera Module |
|---|---|
Use Scenario: Powering CMOS image sensors in smartphone rear cameras requiring low-noise, fast-transient response. IC Role / Device Role / Timing Role: Primary 3.0 V analog/digital rail regulator with integrated discharge for pixel clock synchronization. Use Value: 70 dB PSRR prevents switching noise from corrupting analog pixel data; 230 mV dropout enables use with aging Li-ion batteries down to 3.23 V. | Use Scenario: Supplying ISP (image signal processor) cores and interface logic in compact USB/UVC camera dongles. IC Role / Device Role / Timing Role: Fixed 3.0 V LDO delivering stable core voltage while supporting rapid sleep/wake cycles. Use Value: 1.0 µA quiescent current in low-power mode extends standby time; AE pin allows firmware-controlled performance scaling. |
| Wearable Health Monitor | Industrial Barcode Scanner |
Use Scenario: Regulating power for optical heart-rate sensors and low-power microcontrollers in wrist-worn devices. IC Role / Device Role / Timing Role: Always-on 3.0 V supply enabling instant wake-from-sleep with sub-millisecond startup time. Use Value: Fast mode activation at >8 mA load ensures immediate response to photodiode burst current demands without voltage sag. | Use Scenario: Providing clean 3.0 V bias to laser diode drivers and CCD line sensors in handheld scanners. IC Role / Device Role / Timing Role: Low-noise, high-PSRR regulator isolating sensitive analog acquisition circuitry from digital switching noise. Use Value: Stable 1 µF ceramic support simplifies layout; ±1% accuracy guarantees consistent laser power calibration across temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1826T-3002E/DB | 300 mA, 3.0 V fixed, 250 mV dropout at 300 mA, 50 µA quiescent current (no tri-mode) | Lacks auto-switching and AE pin control; higher IQ limits battery life in intermittent-use devices | Select when simplicity and cost outweigh dynamic power optimization needs |
| TLS850B2TE/V33 | 500 mA, 3.3 V fixed, 200 mV dropout, 20 µA IQ, AEC-Q100 qualified | Higher current rating and automotive qualification; incompatible 3.3 V output and larger HTSOPI-8 package | Select for automotive-grade 3.3 V systems requiring extended temperature range and functional safety compliance |
Compared with MCP1826T-3002E/DB and TLS850B2TE/V33, the NCP4589DSN30T1G uniquely delivers ultra-low 1.0 µA quiescent current with intelligent tri-mode operation in a compact SOT-23-5 footprint-enabling longer battery runtime and faster transient recovery in portable imaging applications without sacrificing board space.
Availability
NCP4589DSN30T1G is available at Aetrix Electronics and suitable for portable camera modules, wearable health monitors, and industrial barcode scanners requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for NCP4589DSN30T1G 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 manufacturer specializing in energy-efficient power management, analog, and sensor technologies for automotive, industrial, and portable electronics.
The NCP4589 family targets battery-powered imaging and communication equipment, delivering ultra-low quiescent current, fast transient response, and small-footprint packaging for space- and power-constrained designs.
FAQ
What is the maximum output current capability of the NCP4589DSN30T1G?
The NCP4589DSN30T1G delivers up to 300 mA continuous output current under typical thermal conditions in its SOT-23-5 package. Absolute maximum rated output current is 400 mA, but sustained operation above 300 mA requires careful PCB thermal design due to its 238°C/W junction-to-air thermal resistance. Derating curves in the datasheet confirm full 300 mA capability at +85°C ambient with standard 2-layer board layout.
Does the NCP4589DSN30T1G require external components for stable operation?
Yes, the NCP4589DSN30T1G requires two external ceramic capacitors: a 1 µF input capacitor (C1) placed close to VIN and GND, and a 1 µF output capacitor (C2) placed close to VOUT and GND. These values ensure stability, adequate line transient response, and proper fast-mode PSRR performance. Larger capacitance improves dynamic behavior but is not required for basic functionality.
How does the AE pin affect the operation of the NCP4589DSN30T1G?
The AE pin on the NCP4589DSN30T1G selects between automatic tri-mode switching (AE = low) and forced fast mode (AE = high). When AE is pulled low (≤0.4 V), the device autonomously switches between low-power and fast modes based on load current thresholds (~1–2 mA and ~8 mA). When AE is high (≥1.0 V), it remains in fast mode regardless of load, ensuring consistent 70 dB PSRR and rapid transient response at the cost of higher quiescent current (55 µA).
Is the NCP4589DSN30T1G compatible with ceramic output capacitors?
Yes, the NCP4589DSN30T1G is explicitly designed and characterized for stable operation with 1 µF or greater X5R/X7R ceramic output capacitors. Unlike many older LDOs, it does not require ESR-tuned tantalum or aluminum electrolytic capacitors. Using ceramic capacitors simplifies BOM, reduces board area, and improves reliability-no minimum ESR specification is needed.
What is the dropout voltage of the NCP4589DSN30T1G at 300 mA load?
The dropout voltage of the NCP4589DSN30T1G is 230 mV typical at 300 mA output current and 2.8 V nominal output voltage. This value scales with output voltage: for example, at 3.0 V output, typical dropout is ~250 mV. The low dropout enables operation from inputs as low as 3.25 V, making it suitable for single-cell Li-ion and Li-polymer battery applications across their full discharge curve.
NCP4589DSN30T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.25V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.35V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 4 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:
- SOT-23-5
NCP4589DSN30T1G FAQ
1.How can I place an order for NCP4589DSN30T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP4589DSN30T1G 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 NCP4589DSN30T1G reliable?
The price and inventory of NCP4589DSN30T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP4589DSN30T1G is usually 5 days.
3.What payment methods are accepted for NCP4589DSN30T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP4589DSN30T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP4589DSN30T1G?
NCP4589DSN30T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP4589DSN30T1G 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 NCP4589DSN30T1G?
For technical support, including NCP4589DSN30T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP4589DSN30T1G requirements.
6.How does Aetrix verify that NCP4589DSN30T1G is sourced from the original manufacturer or authorized distributors?
All NCP4589DSN30T1G 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 NCP4589DSN30T1G meets industry standards.
7.What is the process for return or replacement of NCP4589DSN30T1G?
All NCP4589DSN30T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP4589DSN30T1G, 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 NCP4589DSN30T1G part is unused and in its original packaging.
Return procedure for NCP4589DSN30T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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