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onsemi NCP4589DSN12T1G
- Part No.:
- NCP4589DSN12T1G
- Manufacturer:
- onsemi
- Package:
- SC-74A, SOT-753
- Datasheet:
-
NCP4589DSN12T1G.pdf
- Description:
- IC REG LINEAR 1.2V 300MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,416
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Product details
Overview
NCP4589DSN12T1G from onsemi is a 300 mA tri-mode CMOS LDO voltage regulator with 1.2 V fixed output, operating from 1.4 V to 5.25 V input, ±1% output accuracy at 25 °C, and 230 mV typical dropout at 300 mA - designed for power management in space-constrained portable imaging and communication systems.
For engineers reviewing the NCP4589DSN12T1G datasheet, pinout, applications, or equivalent options, key selection criteria include its auto-eco/fast mode switching (1–8 mA load threshold), ultra-low quiescent current (1.0 µA in low-power mode), stable ceramic-capacitor operation, and SOT-23-5 package compatibility with battery-powered camera modules and sensor subsystems.
Technical Context
The NCP4589DSN12T1G implements a tri-mode architecture: fast-response mode (55 µA supply current, 70 dB PSRR at 1 kHz) for dynamic loads, low-power mode (1.0 µA supply current below 2 mA load) for standby efficiency, and standby mode (0.1 µA) via CE pin assertion. Mode selection is controlled by the AE pin voltage level and automatic load-current detection.
It integrates fold-back current limiting, output discharge capability (D-version), and operates stably with 1 µF ceramic input/output capacitors. The internal N-channel pass transistor delivers 230 mV dropout at 300 mA for 1.2 V output, enabling regulation from as low as 1.42 V input.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2 V ±1% (at TJ = 25 °C, IOUT = 5 mA) |
| Max Output Current | 300 mA continuous - supports image sensor biasing and baseband IC core rails |
| Dropout Voltage | 230 mV typ. at 300 mA - enables operation from single-cell Li-ion (3.0 V min) or dual-cell NiMH |
| Quiescent Current | 1.0 µA in low-power mode (VOUT ≤ 1.85 V) - extends battery life in always-on camera wake-up circuits |
| PSRR | 70 dB at 1 kHz (fast mode) - suppresses noise from shared PMIC switchers in compact PCB layouts |
| Operating Input Range | 1.4 V to 5.25 V - compatible with wide-input DC-DC pre-regulators and direct battery connection |
| Accuracy vs Temp | ±1.5% over −40 °C to +85 °C - ensures stable sensor analog front-end bias under thermal cycling |
Pinout & Package
SOT-23-5 package (Case 1212), 2.7 mm × 3.1 mm × 1.3 mm body, 0.95 mm pitch, Pb-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply pin | Accepts 1.4–5.25 V; requires local 1 µF ceramic decoupling to GND |
| GND | Ground reference | Common return for input/output paths; must be low-impedance plane for stability |
| CE | Chip enable control | Active-high logic; internal pull-down; tie to VIN if always-on operation required |
| VOUT | Regulated output | Delivers 1.2 V ±1%; connects to 1 µF ceramic capacitor and load |
| AE | Auto Eco mode select | Low = auto-eco (low IQ); high = forced fast mode; open = auto-switching based on load |
Key Features
| Feature | Design Value |
|---|---|
| Tri-mode operation | Automatically switches between fast-response (55 µA), low-power (1.0 µA), and standby (0.1 µA) modes based on load current |
| Ceramic-capacitor stability | Stable with ≥1 µF X5R/X7R ceramic output capacitor - eliminates need for tantalum, reducing BOM cost and footprint |
| Integrated output discharge | Active VOUT-to-GND discharge path during shutdown - prevents residual voltage hold-up in camera sensor reset sequences |
| High PSRR at 1 kHz | 70 dB attenuation of switching noise from upstream DC-DC converters - critical for low-noise analog sensor rails |
| Ultra-low dropout | 230 mV at 300 mA enables efficient 1.2 V rail generation from 1.42 V minimum input - ideal for low-VIN battery applications |
Applications
| Camera Power Management | Portable Image Sensor Biasing |
|---|---|
Use Scenario: Powering CMOS image sensors in smartphone front-facing cameras requiring rapid wake-from-standby with minimal quiescent draw. IC Role / Device Role / Timing Role: Primary 1.2 V core supply regulator with auto-eco mode enabling <1 µA sleep current and sub-10 µs wake-up response. Use Value: Extends standby battery life by >3× versus standard LDOs while maintaining fast transient recovery for frame capture readiness. | Use Scenario: Providing clean, stable 1.2 V bias to high-resolution industrial image sensors in battery-operated inspection devices. IC Role / Device Role / Timing Role: Low-noise, ceramic-stable LDO delivering regulated core voltage with 70 dB PSRR to suppress EMI from nearby MCU clocks. Use Value: Reduces image sensor dark current drift and fixed-pattern noise by maintaining ±1% output accuracy across −40 °C to +85 °C. |
| Wireless Communication Module Rail | Wearable Health Monitor Core Supply |
Use Scenario: Supplying 1.2 V to Bluetooth LE SoC cores in compact earbud designs where board area and thermal dissipation are constrained. IC Role / Device Role / Timing Role: Compact SOT-23-5 LDO with 230 mV dropout enabling direct regulation from 1.45 V minimum input (e.g., buck-boost output). Use Value: Eliminates need for intermediate 1.8 V rail, simplifying power tree and reducing component count by one DC-DC stage. | Use Scenario: Powering ultra-low-power microcontroller and optical heart-rate sensor ASIC in coin-cell–powered wearables. IC Role / Device Role / Timing Role: Tri-mode LDO delivering 1.2 V with 1.0 µA quiescent current in eco mode and fast transient response during pulse measurement bursts. Use Value: Achieves >12-month battery life in continuous monitoring mode while supporting 50-ms sensor activation without output droop. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO voltage regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1202E/TT | 250 mA max output, 6 µA IQ (fixed), no tri-mode or AE pin; SC-70 package | Lacks auto-eco switching and output discharge; lower current rating limits use with higher-power sensors | Select when only basic 1.2 V regulation is needed and board space allows SC-70; avoid for fast-load transient or battery-life-critical apps |
| TCS2117-120MWR | 300 mA, 1.5 µA IQ (low-power mode), no AE pin, no output discharge; 1.2 mm × 1.2 mm XDFN | Smaller footprint but lacks programmable mode control and active discharge - unsuitable for systems requiring controlled VOUT ramp-down | Prefer for ultra-dense layouts where SOT-23-5 is too large; verify absence of discharge requirement in target system |
Compared with MCP1700T-1202E/TT and TCS2117-120MWR, the NCP4589DSN12T1G uniquely combines tri-mode intelligence, integrated output discharge, and SOT-23-5 manufacturability - making it optimal for battery-powered imaging systems demanding both ultra-low IQ and robust transient behavior.
Availability
NCP4589DSN12T1G is available at Aetrix Electronics and suitable for camera modules, portable medical sensors, and wireless audio devices requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for NCP4589DSN12T1G 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, imaging, and automotive solutions.
The NCP4589DSN12T1G belongs to the NCP4589 family of tri-mode LDOs engineered specifically for ultra-low-power portable imaging and communication equipment where dynamic load response and standby efficiency are co-optimized.
FAQ
What is the maximum output current rating for the NCP4589DSN12T1G?
The NCP4589DSN12T1G is rated for 300 mA continuous output current. This is confirmed in the Absolute Maximum Ratings table (IOUT = 400 mA) and Electrical Characteristics (IOUT = 300 mA typical max), with thermal derating required above ambient temperatures where power dissipation exceeds the SOT-23-5 package's 420 mW limit. It sustains full 300 mA at 25 °C with adequate PCB copper area.
Does the NCP4589DSN12T1G require external capacitors, and what values are recommended?
Yes, the NCP4589DSN12T1G requires both input and output ceramic capacitors. The datasheet specifies a minimum 1 µF X5R/X7R ceramic capacitor on both VIN–GND and VOUT–GND, placed as close as possible to the respective pins. Larger values improve line/load transient response, but parallel ceramic capacitors may cause instability; tantalum capacitors are discouraged due to ESR-related oscillation risk.
How does the AE pin function on the NCP4589DSN12T1G?
The AE (Auto Eco) pin on the NCP4589DSN12T1G controls operational mode: pulled low (<0.4 V), it forces low-power mode (1.0 µA IQ); pulled high (>1.0 V), it forces fast mode (55 µA IQ); left floating or at mid-voltage, it enables automatic switching between modes based on load current thresholds (IOUTL = 1–2 mA, IOUTH = 8 mA). This pin enables system-level optimization of efficiency versus responsiveness.
Is the NCP4589DSN12T1G compatible with lead-free reflow soldering processes?
Yes, the NCP4589DSN12T1G is Pb-free and RoHS-compliant, qualified for standard lead-free reflow profiles per J-STD-020. Its SOT-23-5 package (Case 1212) supports peak reflow temperatures up to 260 °C, with moisture sensitivity level (MSL) defined in the onsemi Soldering and Mounting Techniques Reference Manual. No special pre-bake is required for standard MSL-1 handling.
What protection features are integrated into the NCP4589DSN12T1G?
The NCP4589DSN12T1G integrates fold-back current limiting, thermal shutdown, and reverse-current blocking. It also includes an active output discharge path (D-version feature) that pulls VOUT to GND during CE-driven disable, preventing residual charge from interfering with downstream logic sequencing. ESD protection meets HBM 2000 V and MM 200 V standards per AEC-Q100.
NCP4589DSN12T1G 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):
- 1.2V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.7V @ 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
NCP4589DSN12T1G FAQ
1.How can I place an order for NCP4589DSN12T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP4589DSN12T1G 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 NCP4589DSN12T1G reliable?
The price and inventory of NCP4589DSN12T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP4589DSN12T1G is usually 5 days.
3.What payment methods are accepted for NCP4589DSN12T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP4589DSN12T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP4589DSN12T1G?
NCP4589DSN12T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP4589DSN12T1G 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 NCP4589DSN12T1G?
For technical support, including NCP4589DSN12T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP4589DSN12T1G requirements.
6.How does Aetrix verify that NCP4589DSN12T1G is sourced from the original manufacturer or authorized distributors?
All NCP4589DSN12T1G 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 NCP4589DSN12T1G meets industry standards.
7.What is the process for return or replacement of NCP4589DSN12T1G?
All NCP4589DSN12T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP4589DSN12T1G, 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 NCP4589DSN12T1G part is unused and in its original packaging.
Return procedure for NCP4589DSN12T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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