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onsemi NCP4587DSN28T1G
- Part No.:
- NCP4587DSN28T1G
- Manufacturer:
- onsemi
- Package:
- SC-74A, SOT-753
- Datasheet:
-
NCP4587DSN28T1G.pdf
- Description:
- IC REG LINEAR 2.8V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,727
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Product details
Overview
NCP4587DSN28T1G from onsemi is a 150 mA tri-mode CMOS LDO voltage regulator with auto-eco/fast/standby operation modes, 2.8 V fixed output, 120 mV typical dropout at 150 mA (VOUT ≥ 2.6 V), ±1% output accuracy (TA = 25°C), and stable operation with ceramic capacitors. It serves as a low-noise, high-PSRR power supply for image sensors in portable cameras.
For engineers reviewing the NCP4587DSN28T1G datasheet, pinout, applications, or equivalent options, key selection criteria include its 2.8 V fixed output, SOT-23-5 package with AE and CE control pins, tri-mode quiescent current scaling (1.0 µA low-power / 55 µA fast / 0.1 µA standby), and 70 dB PSRR at 1 kHz in fast mode.
Technical Context
The NCP4587DSN28T1G implements an adaptive tri-mode architecture: it autonomously transitions between low-power mode (1.0 µA IQ) below 2 mA load and fast-response mode above 8 mA load, or remains permanently in fast mode when the AE pin is held high. Its internal N-channel pass transistor enables ultra-low dropout and supports ceramic output capacitors without stability compensation.
Control logic integrates independent CE (active-high enable) and AE (auto-eco select) inputs, enabling system-level power sequencing and dynamic response optimization. The device includes fold-back current limiting and-specifically in the "D" variant-integrated output discharge via an internal VOUT-to-GND transistor activated during shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8 V ±1% (at TA = 25°C, IOUT = 5 mA), enabling direct powering of 2.8 V image sensor bias rails without external feedback. |
| Max Output Current | 150 mA continuous, supporting peak loads of modern CMOS image sensors and companion logic in compact camera modules. |
| Dropout Voltage | 120 mV typical at 150 mA (VIN ≥ 2.92 V), allowing operation from single-cell Li-ion (3.0–4.2 V) or 3.3 V rails with margin. |
| Quiescent Current | 1.0 µA in low-power mode, 55 µA in fast mode, 0.1 µA in standby-enabling >1-year battery life in always-on camera wake-up circuits. |
| PSRR | 70 dB at 1 kHz (fast mode), suppressing switching noise from adjacent DC-DC converters feeding the same PCB domain. |
| Operating Input Range | 1.4 V to 5.25 V, compatible with wide-input PMIC outputs and legacy 3.3 V/5 V supply domains. |
| Thermal Resistance | RJA = 238 °C/W (SOT-23), permitting 150 mA operation up to +85°C ambient with minimal copper area. |
Pinout & Package
SOT-23-5 package (Case 1212), 2.7 mm × 2.5 mm × 1.3 mm body, 0.95 mm pitch, Pb-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Input supply connection | Accepts 1.4–5.25 V input; requires local 1 µF ceramic decoupling per layout guidelines. |
| 2 (GND) | Power ground reference | Low-impedance return path for VIN, VOUT, CE, and AE; must be connected to main system ground plane. |
| 3 (CE) | Chip enable input | Active-high logic control (VCEH = 1.0 V min); internal pull-down allows tie-to-VIN for always-on operation. |
| 4 (VOUT) | Regulated output | Delivers stable 2.8 V ±1%; supports 1 µF ceramic capacitor; includes integrated discharge FET (D-version). |
| 5 (AE) | Auto Eco mode select | High = permanent fast mode; low/floating = auto-switching between low-power and fast modes based on load current. |
Key Features
| Feature | Design Value |
|---|---|
| Tri-mode IQ scaling | Automatically reduces quiescent current to 1.0 µA under light load (<2 mA), preserving battery life without sacrificing transient response when load increases. |
| Integrated output discharge | Internal VOUT-to-GND transistor discharges output capacitance rapidly during shutdown-critical for clean power sequencing in multi-rail camera systems. |
| Ceramic-capacitor stability | No ESR requirements; eliminates need for tantalum or aluminum electrolytic capacitors, reducing BOM cost and board space in space-constrained modules. |
| High PSRR in fast mode | 70 dB rejection at 1 kHz enables co-location with noisy DC-DC converters, simplifying power domain partitioning in compact camera PCBs. |
| Fold-back current limit | Protects against short-circuit faults while limiting thermal stress; output voltage collapses gracefully rather than sustaining high-current fault conditions. |
Applications
| Smartphone Front-Facing Camera | Industrial USB Camera Module |
|---|---|
|
Use Scenario: Powering 2.8 V analog front-end and digital interface of a 5 MP CMOS image sensor in a slim smartphone bezel. IC Role / Device Role / Timing Role: Primary low-noise bias regulator delivering stable 2.8 V to sensor pixel array and ADC reference, synchronized with frame capture timing. Use Value: Tri-mode IQ scaling extends standby battery life by >3× vs. fixed-fast-mode LDOs; integrated discharge prevents residual voltage from interfering with next-frame reset. |
Use Scenario: Supplying 2.8 V to a USB 2.0 vision camera used in factory automation for real-time barcode reading. IC Role / Device Role / Timing Role: Standalone post-regulator after a wide-input buck converter, providing clean, low-noise power during rapid image capture bursts. Use Value: 70 dB PSRR suppresses ripple from upstream 500 kHz DC-DC, ensuring <1 LSB noise contribution to 10-bit image data streams. |
| Wearable Fitness Tracker Camera | Medical Endoscope Imaging Probe |
|
Use Scenario: Powering miniature 2.8 V image sensor in a wrist-worn device with coin-cell or small Li-Po battery. IC Role / Device Role / Timing Role: Ultra-low-IQ power source enabling always-on motion-triggered imaging with sub-µA sleep current. Use Value: 1.0 µA low-power mode IQ allows >18 months of shelf life on a CR2032; SOT-23-5 footprint fits tight mechanical envelopes. |
Use Scenario: Regulating 2.8 V for high-sensitivity image sensor in a sterilizable endoscope probe with strict thermal limits. IC Role / Device Role / Timing Role: Precision bias supply maintaining ±1% output accuracy across −40°C to +85°C operating range during procedure cycles. Use Value: ±1% accuracy and ±50 ppm/°C tempco ensure consistent sensor gain calibration; RJA = 238 °C/W permits full 150 mA load at 85°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1703T-2802E/MB | Fixed 2.8 V, 250 mA, 6 µA IQ (no tri-mode), 350 mV dropout at 250 mA | Lacks auto-eco switching and output discharge; higher dropout limits use with lower VIN rails | Select when higher output current (250 mA) is required and ultra-low IQ is not critical. |
| Torex XC6210B282MR-G | Fixed 2.8 V, 150 mA, 1.0 µA IQ (low-power only), no AE/CE control, 200 mV dropout at 150 mA | No fast-mode or standby modes; no enable or eco-select pins; simpler control but less flexible | Select for cost-sensitive, static-load applications where dynamic mode switching adds unnecessary complexity. |
Compared with MCP1703T-2802E/MB and XC6210B282MR-G, the NCP4587DSN28T1G uniquely delivers adaptive tri-mode operation, integrated output discharge, and lowest dropout in its class-making it optimal for battery-powered imaging systems requiring both long standby life and fast transient response.
Availability
NCP4587DSN28T1G is available at Aetrix Electronics and suitable for portable imaging systems, industrial machine vision modules, and wearable camera applications requiring stable component supply, automotive-grade reliability, and long-term lifecycle support.
Supply support for NCP4587DSN28T1G 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 specializing in energy-efficient power management, analog, and sensor solutions for automotive, industrial, and consumer markets.
The NCP4587DSN28T1G belongs to the NCP4587 family of tri-mode LDOs designed specifically for ultra-low-power, high-accuracy biasing of image sensors and RF front-ends in space- and battery-constrained portable electronics.
FAQ
What is the output voltage tolerance of the NCP4587DSN28T1G over temperature?
The NCP4587DSN28T1G maintains ±1% output voltage accuracy at TA = 25°C. Over the full operating temperature range (−40°C to +85°C), output voltage deviation is ±2.5% for VOUT > 2 V, verified per the Electrical Characteristics table on page 3 of the datasheet. This ensures stable biasing for precision analog blocks in camera sensors across environmental conditions.
Does the NCP4587DSN28T1G require an external resistor divider for output voltage setting?
No. The NCP4587DSN28T1G is a fixed-output device with factory-trimmed 2.8 V regulation. It does not include feedback pins or external resistor connections-eliminating component count and layout sensitivity associated with adjustable LDOs. All variants in the NCP4587 series use laser-trimmed internal references.
How does the AE pin affect transient response in the NCP4587DSN28T1G?
When the AE pin is pulled high, the NCP4587DSN28T1G operates permanently in fast mode, delivering 70 dB PSRR and optimized load-transient recovery (see Figures 27–36). When AE is low or floating, it switches to low-power mode under light load (<2 mA), increasing output impedance and slowing transient response-but reducing IQ to 1.0 µA for extended battery life.
Is the NCP4587DSN28T1G compatible with 1 µF ceramic output capacitors?
Yes. The NCP4587DSN28T1G is explicitly characterized and guaranteed stable with 1 µF ceramic output capacitors (X5R/X7R), as stated in the Features list and Application Information section. No minimum ESR requirement applies, unlike many older LDOs-reducing BOM cost and board area.
What protection features are integrated into the NCP4587DSN28T1G?
The NCP4587DSN28T1G includes fold-back current limiting (50 mA short-circuit current), thermal shutdown (TJ > 150°C), and reverse-voltage protection on all pins (−0.3 V to VIN + 0.3 V absolute max). Its "D" suffix denotes integrated output discharge, which actively pulls VOUT to GND during disable-preventing back-powering of upstream circuitry.
NCP4587DSN28T1G 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):
- 2.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.18V @ 150mA
- Current - Output:
- 150mA
- 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
NCP4587DSN28T1G FAQ
1.How can I place an order for NCP4587DSN28T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP4587DSN28T1G 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 NCP4587DSN28T1G reliable?
The price and inventory of NCP4587DSN28T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP4587DSN28T1G is usually 5 days.
3.What payment methods are accepted for NCP4587DSN28T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP4587DSN28T1G transactions.
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4.How is shipping managed for NCP4587DSN28T1G?
NCP4587DSN28T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP4587DSN28T1G 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 NCP4587DSN28T1G?
For technical support, including NCP4587DSN28T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP4587DSN28T1G requirements.
6.How does Aetrix verify that NCP4587DSN28T1G is sourced from the original manufacturer or authorized distributors?
All NCP4587DSN28T1G 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 NCP4587DSN28T1G meets industry standards.
7.What is the process for return or replacement of NCP4587DSN28T1G?
All NCP4587DSN28T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP4587DSN28T1G, 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 NCP4587DSN28T1G part is unused and in its original packaging.
Return procedure for NCP4587DSN28T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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