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onsemi NCP4587DSN33T1G
- Part No.:
- NCP4587DSN33T1G
- Manufacturer:
- onsemi
- Package:
- SC-74A, SOT-753
- Datasheet:
-
NCP4587DSN33T1G.pdf
- Description:
- IC REG LINEAR 3.3V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,578
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Product details
Overview
NCP4587DSN33T1G from onsemi is a 150 mA tri-mode CMOS LDO voltage regulator with 3.3 V fixed output, operating from 1.4 V to 5.25 V input, featuring auto-switching between low-power (1.0 µA) and fast-response (55 µA) modes based on load current, and optimized for battery-powered portable electronics requiring stable low-noise power delivery.
For engineers reviewing the NCP4587DSN33T1G datasheet, pinout, applications, or equivalent options, key selection considerations include its 120 mV typical dropout at 150 mA (VOUT ≥ 2.6 V), ±1% output accuracy over temperature, 70 dB PSRR in fast mode, ceramic-capacitor stability, and integrated auto-discharge function enabled by the D-series variant.
Technical Context
The NCP4587DSN33T1G implements a tri-mode architecture: low-power mode (<1.0 µA quiescent current) below ~1–2 mA load, automatic transition to fast-response mode above ~8 mA, and permanent fast mode when AE pin is high. Its internal N-channel pass transistor enables low dropout and supports output discharge via an integrated GND-switch during disable.
It operates across −40°C to +85°C ambient, delivers ±1% output accuracy for VOUT > 2 V at 25°C, maintains 0.02%/V line regulation in fast mode, and includes fold-back current limiting and ESD protection (2 kV HBM). The device is stable with 1 µF ceramic output capacitors and requires no external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V, ±1% accuracy at 25°C ensures precise rail generation for MCU I/O, sensors, and RF front-ends |
| Max Output Current | 150 mA continuous, sufficient for powering microcontrollers, image sensors, and low-power wireless transceivers |
| Dropout Voltage | 120 mV typical at 150 mA (VOUT ≥ 2.6 V), enabling operation from single-cell Li-ion or 3.6 V supply with margin |
| Quiescent Current | 1.0 µA in low-power mode, extending battery life in standby/sleep states of portable devices |
| PSRR | 70 dB at 1 kHz in fast mode, suppressing switching noise from upstream DC/DC converters |
| Operating Input Range | 1.4 V to 5.25 V, supporting direct connection to Li-ion, NiMH, or regulated system rails |
| Thermal Resistance | 238 °C/W (RJA, SOT-23), defining safe power dissipation limits under PCB layout constraints |
Pinout & Package
Package: SOT-23-5 (Case 1212), Pb-free, 2.7 mm × 2.5 mm footprint with 0.95 mm pitch; suitable for space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply pin | Accepts 1.4–5.25 V input; requires local 1 µF ceramic decoupling to minimize line transients |
| GND | Ground reference | Common return path for input, output, and internal circuitry; must be low-impedance and adjacent to VIN/VOUT |
| CE | Chip enable (active-high) | Enables/disables regulator output; internal pull-down allows tie-to-VIN for always-on operation |
| VOUT | Regulated output | Delivers stable 3.3 V; connects to 1 µF ceramic capacitor near pin for stability and transient response |
| AE | Auto Eco mode control | Low = auto-switching mode; high = permanent fast mode; floating defaults to auto mode |
Key Features
| Feature | Design Value |
|---|---|
| Tri-mode operation | Automatically selects low-power (1.0 µA) or fast-response (55 µA) mode based on load, optimizing efficiency vs. performance |
| Integrated output discharge | D-series variant includes internal VOUT-to-GND switch, enabling rapid output discharge during shutdown-critical for sequencing-sensitive systems |
| Ceramic-capacitor stability | Stable with ≥1 µF X5R/X7R ceramic output capacitor; eliminates need for higher-ESR tantalum or electrolytic types |
| High PSRR in fast mode | 70 dB at 1 kHz suppresses ripple from noisy DC/DC sources, improving signal integrity in analog and RF sections |
| ±1% output accuracy | Ensures reliable logic-level compatibility and ADC reference stability across temperature and line/load variations |
Applications
| Smartphone Camera Modules | Wearable Health Sensors |
|---|---|
Use Scenario: Powering CMOS image sensors and ISP processors in compact smartphone camera subsystems with strict thermal and size constraints. IC Role / Device Role / Timing Role: Primary 3.3 V LDO delivering clean, low-noise bias to image sensor analog front-end and digital interface blocks. Use Value: 120 mV dropout enables use with declining Li-ion voltage; 70 dB PSRR prevents switching noise from corrupting image data; auto-discharge ensures safe power-down sequencing. |
Use Scenario: Supplying ultra-low-power biopotential amplifiers, optical heart-rate sensors, and BLE SoCs in wrist-worn fitness trackers. IC Role / Device Role / Timing Role: Always-on 3.3 V rail generator with sub-µA quiescent current in sleep mode and fast wake-up response. Use Value: 1.0 µA low-power mode extends battery life to multi-week operation; ±1% accuracy maintains sensor calibration; SOT-23-5 fits tight wearable PCB layouts. |
| Industrial Handheld Scanners | IoT Edge Node Microcontrollers |
Use Scenario: Regulating power for laser diode drivers, barcode decoding ASICs, and touch interface controllers in ruggedized handheld scanners. IC Role / Device Role / Timing Role: Main 3.3 V supply with robust line/load transient response and thermal resilience across −40°C to +85°C. Use Value: Fast-mode switching handles burst-current demands of laser pulses; 238 °C/W RJA allows operation without heatsinking in sealed enclosures. |
Use Scenario: Providing regulated 3.3 V to ARM Cortex-M microcontrollers, LoRaWAN transceivers, and environmental sensors in battery-operated edge nodes. IC Role / Device Role / Timing Role: System-level LDO managing dynamic current profiles-from µA sleep to 150 mA active transmit bursts. Use Value: Tri-mode architecture minimizes average current draw; ceramic-capacitor compatibility simplifies BOM and improves reliability vs. tantalum alternatives. |
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 | Fixed 3.3 V, 250 mA, 1.6 µA IQ, no AE pin or auto-discharge; SOT-23-3 package (no CE/AE pins) | Lacks enable, mode control, and output discharge-suitable only for simple always-on rails | Select if board space is critical and full feature set is unnecessary; verify CE/AE functionality not required in system |
| TCS2117-330MWR | 3.3 V, 200 mA, 2.5 µA IQ, no AE pin, no auto-discharge, but includes thermal shutdown and reverse-current protection | Higher current capability but no tri-mode optimization; lacks integrated discharge for sequencing | Prefer when thermal safety is prioritized over ultra-low IQ; confirm sequencing requirements do not mandate discharge |
Compared with MCP1700T-3302E/TT and TCS2117-330MWR, the NCP4587DSN33T1G uniquely combines ultra-low quiescent current, programmable fast-mode response, and integrated output discharge in a 5-pin SOT-23-enabling advanced power management in space-constrained, battery-sensitive designs where sequencing and noise rejection are critical.
Availability
NCP4587DSN33T1G is available at Aetrix Electronics and suitable for smartphone camera modules, wearable health sensors, and industrial handheld scanners requiring stable component supply with guaranteed long-term manufacturability and RoHS-compliant packaging.
Supply support for NCP4587DSN33T1G 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, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The NCP4587 series belongs to onsemi's precision LDO portfolio, designed specifically for ultra-low-power portable electronics demanding high accuracy, low dropout, and intelligent power-state management across wide input voltage ranges.
FAQ
What is the output voltage tolerance of the NCP4587DSN33T1G over temperature?
The NCP4587DSN33T1G provides ±1% output voltage accuracy at 25°C for VOUT > 2 V. Over the full operating temperature range (−40°C to +85°C), the specification tightens to ±1.5% (x0.975 to x1.015) for 3.3 V output, ensuring reliable logic-level compatibility and sensor biasing across environmental conditions. This tolerance is verified per the Electrical Characteristics table on page 3 of the datasheet.
Does the NCP4587DSN33T1G require an external capacitor for stability?
Yes, the NCP4587DSN33T1G requires a minimum 1 µF ceramic capacitor (X5R or X7R) placed directly at the VOUT pin to ensure stability and optimal transient response. The datasheet explicitly states it is stable with ceramic capacitors and warns against using high-ESR tantalum types, which may cause oscillation. Input also requires a 1 µF ceramic capacitor close to VIN and GND.
How does the AE pin affect the operation of the NCP4587DSN33T1G?
The AE (Auto Eco) pin on the NCP4587DSN33T1G controls the operational mode: when pulled low or left floating, the device automatically switches between low-power mode (<1.0 µA) and fast-response mode (~55 µA) based on load current thresholds (~1–2 mA down, ~8 mA up); when driven high, it forces permanent fast mode for consistent transient performance regardless of load.
Is the NCP4587DSN33T1G compatible with lead-free soldering processes?
Yes, the NCP4587DSN33T1G is a Pb-free device in a RoHS-compliant SOT-23-5 package (Case 1212) and is qualified for standard lead-free reflow soldering profiles per J-STD-020. The package dimensions and thermal characteristics on page 19 of the datasheet confirm its suitability for modern assembly processes, including peak temperatures up to 260°C.
What protection features are integrated into the NCP4587DSN33T1G?
The NCP4587DSN33T1G integrates fold-back current limiting, thermal shutdown, and ESD protection (2000 V HBM, 200 V MM). It also features an internal output discharge transistor (D-series specific) that rapidly drains VOUT capacitance during shutdown-preventing back-powering of upstream circuits and supporting safe power sequencing in complex systems.
NCP4587DSN33T1G 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):
- 3.3V
- 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
NCP4587DSN33T1G FAQ
1.How can I place an order for NCP4587DSN33T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP4587DSN33T1G 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 NCP4587DSN33T1G reliable?
The price and inventory of NCP4587DSN33T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP4587DSN33T1G is usually 5 days.
3.What payment methods are accepted for NCP4587DSN33T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP4587DSN33T1G transactions.
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4.How is shipping managed for NCP4587DSN33T1G?
NCP4587DSN33T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP4587DSN33T1G 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 NCP4587DSN33T1G?
For technical support, including NCP4587DSN33T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP4587DSN33T1G requirements.
6.How does Aetrix verify that NCP4587DSN33T1G is sourced from the original manufacturer or authorized distributors?
All NCP4587DSN33T1G 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 NCP4587DSN33T1G meets industry standards.
7.What is the process for return or replacement of NCP4587DSN33T1G?
All NCP4587DSN33T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP4587DSN33T1G, 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 NCP4587DSN33T1G part is unused and in its original packaging.
Return procedure for NCP4587DSN33T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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