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onsemi NCP4589DSN25T1G
- Part No.:
- NCP4589DSN25T1G
- Manufacturer:
- onsemi
- Package:
- SC-74A, SOT-753
- Datasheet:
-
NCP4589DSN25T1G.pdf
- Description:
- IC REG LINEAR 2.5V 300MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,936
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Product details
Overview
NCP4589DSN25T1G from onsemi is a 300 mA tri-mode CMOS LDO voltage regulator with 2.5 V fixed output, 1.4–5.25 V input range, 230 mV dropout at 300 mA, ±1% output accuracy, and auto-switching between low-power (1.0 µA) and fast-response (55 µA) modes based on load current. It serves as a precision power supply for image sensors and portable camera modules.
For engineers reviewing the NCP4589DSN25T1G datasheet, pinout, applications, or equivalent options, key selection criteria include tri-mode quiescent current behavior, 2.5 V fixed output stability under dynamic loads, AE pin-controlled eco/fast mode selection, and SOT-23-5 compatibility with ceramic output capacitors.
Technical Context
The NCP4589DSN25T1G implements an adaptive tri-mode architecture: it operates in low-power mode below 1–2 mA load, switches to fast-response mode above 8 mA, and supports forced fast mode via the AE pin. Its internal N-channel pass transistor enables low dropout and high PSRR (70 dB @ 1 kHz).
It integrates current fold-back protection, stable operation with ≥1 µF ceramic output capacitance, and an output discharger transistor (D-version) for rapid VOUT discharge during shutdown - critical for sequencing in multi-rail camera systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5 V ±1% (at VOUT > 2 V, TJ = 25 °C); ensures stable bias for 2.5 V logic and analog blocks |
| Max Output Current | 300 mA continuous; supports peak loads of image sensor digital cores and analog front-ends |
| Dropout Voltage | 230 mV typ. at 300 mA, VOUT = 2.8 V; enables regulation from 2.73 V input - critical for single-cell Li-ion operation |
| Quiescent Current | 1.0 µA in low-power mode (VOUT ≤ 1.85 V), 55 µA in fast mode; extends battery life in standby while preserving transient response |
| PSRR | 70 dB @ 1 kHz (fast mode); suppresses switching noise from PMICs or DC-DC converters feeding the LDO input |
| Operating Input Range | 1.4 V to 5.25 V; accommodates wide battery voltage swing (e.g., 2.5–4.2 V Li-ion) without external supervision |
| Thermal Resistance | RJA = 238 °C/W (SOT-23); requires minimal PCB copper for thermal management in compact camera modules |
Pinout & Package
Package: SOT-23-5 (Case 1212), 2.7 mm × 3.1 mm × 1.3 mm body, Pb-free, tape-and-reel (3000 pcs).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VIN | Input voltage supply | Accepts 1.4–5.25 V; must be decoupled with ≥1 µF ceramic capacitor placed adjacent to pin |
| 2 - GND | Ground reference | Common return path for input/output currents; requires low-impedance PCB connection to minimize noise coupling |
| 3 - CE | Chip enable control | Active-high logic input; internal pull-down allows direct tie-to-VIN for always-on operation |
| 4 - AE | Auto Eco mode select | Drives fast mode when high (≥1.0 V); enables automatic low-power/faster-response switching when tied to GND or VOUT |
| 5 - VOUT | Regulated output | Delivers 2.5 V ±1%; requires ≥1 µF ceramic capacitor close to pin for stability and transient performance |
Key Features
| Feature | Design Value |
|---|---|
| Tri-mode operation | Automatically transitions between 1.0 µA low-power, 55 µA fast, and forced-fast modes - optimizing battery runtime without sacrificing load transient recovery |
| Output discharger (D-version) | Integrated VOUT-to-GND transistor actively discharges output capacitance during disable, preventing hold-up and enabling clean power sequencing |
| Stable with ceramic capacitors | Guaranteed stability with ≥1 µF X5R/X7R ceramic output cap - eliminates need for bulky tantalum or electrolytic capacitors in space-constrained modules |
| High PSRR at 1 kHz | 70 dB rejection of ripple/noise from upstream DC-DC converters - essential for noise-sensitive analog image sensor supplies |
| Current fold-back protection | Reduces output current and voltage during overload, preventing thermal runaway and enabling safe recovery after short-circuit events |
Applications
| Image Sensor Power | Portable Camera Module |
|---|---|
Use Scenario: Powering CMOS image sensor analog and digital rails in smartphone rear cameras. IC Role / Device Role / Timing Role: Primary 2.5 V LDO supplying sensor core and interface logic, with fast transient response to pixel readout bursts. Use Value: Tri-mode IQ minimizes idle current during frame blanking while maintaining <50 µs recovery from 1–100 mA load steps - preserving image quality and battery life. | Use Scenario: Compact camera module in wearable devices requiring ultra-low standby power and reliable startup. IC Role / Device Role / Timing Role: Fixed 2.5 V regulator enabling instant-on functionality and controlled power-down via CE/AE pins. Use Value: Integrated output discharger ensures VOUT drops to zero within 100 µs of CE deassertion - meeting strict sequencing requirements for multi-voltage camera ICs. |
| Li-ion Powered Equipment | Low-Power IoT Imaging Node |
Use Scenario: Power management in handheld barcode scanners or portable medical imagers using single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Main system LDO delivering regulated 2.5 V across full battery discharge curve (4.2 V → 2.7 V). Use Value: 230 mV dropout at 300 mA allows >95% usable battery capacity - extending operational time by ~12% vs. higher-dropout alternatives. | Use Scenario: Battery-operated edge AI vision node capturing intermittent images over weeks on a coin cell. IC Role / Device Role / Timing Role: Ultra-low-IQ LDO supplying image processing SoC during wake cycles, with AE pin disabling fast mode during deep sleep. Use Value: 1.0 µA quiescent current in low-power mode reduces average system IQ by >40% versus standard LDOs - enabling multi-month battery life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO voltage regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1702T-2502E/MB | Fixed 2.5 V, 250 mA, 6 µA IQ, no tri-mode or AE pin; SC-70 package | Lacks auto eco/fast switching and output discharger; suitable only for static low-current loads | Select when board space is constrained and load dynamics are minimal - not for image sensor burst loads |
| TZB2525L-2.5TR | 2.5 V, 300 mA, 2.5 µA IQ, no mode switching or discharger; XDFN package | No AE control or fast transient capability; lower PSRR (55 dB @ 1 kHz) | Choose for cost-sensitive, non-sequencing applications where 70 dB PSRR and sub-100 µs load recovery are not required |
Compared with MCP1702T-2502E/MB and TZB2525L-2.5TR, the NCP4589DSN25T1G uniquely delivers adaptive tri-mode operation, integrated output discharge, and 70 dB PSRR - making it the only option among the three qualified for dynamic, multi-rail camera power systems requiring both ultra-low standby IQ and fast transient response.
Availability
NCP4589DSN25T1G is available at Aetrix Electronics and suitable for portable imaging equipment, battery-powered medical devices, and industrial camera modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for NCP4589DSN25T1G 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, sensor, and connectivity solutions for automotive, industrial, and consumer markets.
The NCP4589DSN25T1G belongs to the NCP4589 family of tri-mode LDOs designed specifically for battery-powered imaging systems requiring ultra-low quiescent current, fast load transient response, and robust power sequencing capabilities.
FAQ
What is the output voltage tolerance of the NCP4589DSN25T1G over temperature and load?
The NCP4589DSN25T1G provides ±1% output voltage accuracy at TA = 25 °C and VOUT > 2 V. Over the full operating temperature range (−40 °C to +85 °C) and load range (5 mA to 300 mA), output voltage remains within ±2.5% for 2.5 V nominal output - verified per datasheet Table 1 (ELECTRICAL CHARACTERISTICS). This ensures reliable operation of 2.5 V logic and analog circuits across environmental extremes.
Does the NCP4589DSN25T1G require an external resistor network to set its output voltage?
No, the NCP4589DSN25T1G is a fixed-output LDO with factory-trimmed 2.5 V regulation. It does not use external feedback resistors. The output voltage is internally set and specified as 2.5 V ±1% at 25 °C - eliminating layout complexity and component count compared to adjustable LDOs like the NCP4589DSN25T1G's adjustable variants.
How does the AE pin affect the NCP4589DSN25T1G's quiescent current and transient response?
The AE pin directly controls mode selection: when pulled low (<0.4 V), the NCP4589DSN25T1G enters Auto Eco mode (1.0 µA IQ, slower transient response); when pulled high (>1.0 V), it forces Fast Mode (55 µA IQ, optimized for <50 µs load step recovery). This dual-mode flexibility allows system designers to balance battery life and performance dynamically - a feature not present in standard LDOs.
Can the NCP4589DSN25T1G be used with a 1 µF ceramic output capacitor?
Yes, the NCP4589DSN25T1G is explicitly characterized and guaranteed stable with a minimum 1 µF X5R or X7R ceramic output capacitor - as confirmed in the APPLICATION INFORMATION section (page 26) and TYPICAL CHARACTERISTICS (Figures 51–70). Using larger or parallel ceramics is discouraged, as it may induce instability per datasheet guidance.
What protection features are integrated into the NCP4589DSN25T1G?
The NCP4589DSN25T1G integrates current fold-back protection (limiting short-circuit current to ~50 mA), thermal shutdown (activated above TJ = 150 °C), and ESD protection (2000 V HBM, 200 V MM). Its D-version also includes an active output discharger that pulls VOUT to GND during disable - preventing back-powering and ensuring clean power-down sequencing in multi-rail camera systems.
NCP4589DSN25T1G 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):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.5V @ 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
NCP4589DSN25T1G FAQ
1.How can I place an order for NCP4589DSN25T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP4589DSN25T1G 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 NCP4589DSN25T1G reliable?
The price and inventory of NCP4589DSN25T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP4589DSN25T1G is usually 5 days.
3.What payment methods are accepted for NCP4589DSN25T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP4589DSN25T1G transactions.
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4.How is shipping managed for NCP4589DSN25T1G?
NCP4589DSN25T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP4589DSN25T1G 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 NCP4589DSN25T1G?
For technical support, including NCP4589DSN25T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP4589DSN25T1G requirements.
6.How does Aetrix verify that NCP4589DSN25T1G is sourced from the original manufacturer or authorized distributors?
All NCP4589DSN25T1G 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 NCP4589DSN25T1G meets industry standards.
7.What is the process for return or replacement of NCP4589DSN25T1G?
All NCP4589DSN25T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP4589DSN25T1G, 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 NCP4589DSN25T1G part is unused and in its original packaging.
Return procedure for NCP4589DSN25T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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