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onsemi NCP4588DSQ25T1G
- Part No.:
- NCP4588DSQ25T1G
- Manufacturer:
- onsemi
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
NCP4588DSQ25T1G.pdf
- Description:
- IC REG LINEAR 2.5V 200MA SC88A
- Quantity:
- Payment:
- Shipping:
Inventory:4,306
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Product details
Overview
NCP4588DSQ25T1G from onsemi is a 200 mA, 2.5 V fixed-output CMOS LDO linear voltage regulator in SC−70 package, featuring capacitor-free stability, 270 mV dropout at 200 mA, <9.5 µA quiescent current, and 60 dB PSRR at 1 kHz - designed for low-power portable electronics requiring high efficiency and minimal BOM count.
For engineers reviewing the NCP4588DSQ25T1G datasheet, pinout, applications, or equivalent options, key selection criteria include output capacitor elimination capability, ultra-low IQ, auto-discharge functionality, thermal performance in SC−70, and compatibility with 1.4–5.25 V input rails in space-constrained battery-powered systems.
Technical Context
The NCP4588DSQ25T1G implements a CMOS pass transistor architecture enabling stable regulation without an output capacitor, reducing system-level component count and board area. Its internal bandgap reference and error amplifier deliver ±1% output accuracy over −40°C to +85°C.
It integrates active chip enable (CE) logic with 1.0 V high-threshold and 0.4 V low-threshold, plus an internal N-channel discharge transistor (D-version feature) that rapidly sinks VOUT to GND during shutdown - critical for power sequencing in multi-rail portable devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5 V ±1% (ensures precise biasing for 2.5 V logic, ADC references, and RF front-end ICs) |
| Max Output Current | 200 mA continuous (supports moderate-power sensors, microcontrollers, and audio codecs) |
| Dropout Voltage | 270 mV @ 200 mA (enables operation down to VIN = 2.77 V, extending battery runtime in single-cell Li-ion/Li-poly systems) |
| Quiescent Current | <9.5 µA (minimizes standby drain in always-on subsystems such as real-time clocks or wake-up controllers) |
| PSRR | 60 dB @ 1 kHz, VOUT ≥ 2.2 V (suppresses switching noise from DC-DC converters feeding the LDO input) |
| Line Regulation | 0.02%/V typical (maintains tight output stability across wide input voltage swings common in battery discharge profiles) |
| Thermal Resistance | RJA = 263°C/W (SC−70 package; requires minimal PCB copper for thermal relief in ambient ≤ 60°C) |
Pinout & Package
Package: SC−70−5 (Case 419A−02), 1.9 mm × 1.3 mm × 0.9 mm, Pb−Free, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply connection | Accepts 1.4–5.25 V; requires 100 nF ceramic decoupling placed adjacent to pin for optimal transient response |
| GND | Power ground reference | Low-impedance return path; must be routed with short, wide trace to minimize noise coupling into regulation loop |
| CE | Active-high enable control | Pulled internally to GND; connect to VIN if always-on operation required; enables fast power gating in sleep/wake cycles |
| VOUT | Regulated output | Delivers stable 2.5 V; supports optional 0.1–10 µF ceramic output capacitor for large load transients |
| NC | No connection | Internally unconnected; must remain floating - no external tie or routing permitted |
Key Features
| Feature | Design Value |
|---|---|
| Capacitor-free operation | Stable with zero output capacitance - eliminates COUT footprint, cost, and aging-related drift in wearables and hearing aids |
| Auto-discharge function | Integrated N-ch discharge FET pulls VOUT to GND within microseconds upon CE deactivation - prevents back-powering of upstream circuitry |
| Ultra-low quiescent current | <9.5 µA IQ enables >1-year battery life in coin-cell–powered IoT endpoints with periodic wake-up intervals |
| High PSRR at 1 kHz | 60 dB rejection of ripple from switching regulators allows clean 2.5 V rail generation directly from noisy DC-DC outputs |
| Wide input voltage range | 1.4–5.25 V operation supports direct connection to single-cell Li-ion (2.7–4.2 V), NiMH (1.2 V × 2), or USB-powered systems |
Applications
| Smart Wearables | Portable Medical Sensors |
|---|---|
Use Scenario: Compact fitness tracker with optical heart-rate sensor, BLE SoC, and OLED display operating from a 3.7 V Li-poly cell. IC Role / Device Role / Timing Role: Primary 2.5 V power rail regulator for analog front-end and sensor interface ICs; provides stable reference for photodiode signal conditioning. Use Value: Capacitor-free design saves 0.5 mm² PCB area per rail; 270 mV dropout extends usable battery range by ~12% compared to 300 mV-dropout alternatives. | Use Scenario: Handheld blood glucose meter using disposable test strips and low-power MCU with integrated ADC. IC Role / Device Role / Timing Role: Supplies precision 2.5 V reference to 12-bit ADC and powers electrochemical sensor bias circuitry. Use Value: ±1% output accuracy ensures <0.5% measurement error in glucose concentration; auto-discharge prevents strip contamination during insertion/removal. |
| Wireless Audio Accessories | Industrial Handheld Terminals |
Use Scenario: True wireless stereo (TWS) earbud with MEMS microphone, DSP, and Class-D amplifier, powered by 40 mAh Li-poly battery. IC Role / Device Role / Timing Role: Secondary LDO delivering clean 2.5 V to microphone preamp and RF transceiver I/O buffers. Use Value: 60 dB PSRR suppresses 2.4 GHz RF coupling into analog audio path; <9.5 µA IQ reduces standby current by 40% vs. standard LDOs. | Use Scenario: Rugged barcode scanner with 2D imager, laser aiming module, and Bluetooth LE connectivity, operating in warehouse environments (−20°C to 60°C). IC Role / Device Role / Timing Role: Regulates 2.5 V for image sensor interface and flash memory I/O, surviving repeated cold-start and vibration-induced input transients. Use Value: Stable operation without output capacitor avoids ceramic microphonics and mechanical failure under shock; −40°C to +85°C rating ensures reliability across temperature extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-2502E/TT | 250 mA rated, 6 µA IQ, but requires minimum 1 µF output capacitor; no auto-discharge | Lacks VOUT discharge path - unsuitable where back-powering must be prevented during power-down | Select when lowest IQ is critical and output capacitor is acceptable; verify stability with chosen COUT ESR |
| TNIV5025002R | 200 mA, 2.5 V, 12 µA IQ, SC−70, no auto-discharge; PSRR = 55 dB @ 1 kHz | Lower PSRR and no discharge FET limit use in noise-sensitive or strict sequencing applications | Consider for cost-sensitive designs where discharge and high PSRR are non-critical; validate thermal margin at full load |
Compared with MCP1700T-2502E/TT and TNIV5025002R, the NCP4588DSQ25T1G uniquely combines capacitor-free stability, auto-discharge, and 60 dB PSRR in SC−70 - making it the only option among the three suitable for compact, sequenced, noise-immune 2.5 V rails in battery-constrained systems.
Availability
NCP4588DSQ25T1G is available at Aetrix Electronics and suitable for smart wearables, portable medical sensors, wireless audio accessories, industrial handheld terminals, and battery-powered instrumentation requiring stable component supply and long-term manufacturability.
Supply support for NCP4588DSQ25T1G 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 logic solutions for automotive, industrial, cloud, and consumer markets.
The NCP4588DSQ25T1G belongs to the NCP4588 family of ultra-low-IQ, capacitor-free LDOs engineered specifically for space- and power-constrained portable electronics where board area, battery life, and power sequencing integrity are critical design parameters.
FAQ
What is the output voltage tolerance of the NCP4588DSQ25T1G over temperature?
The NCP4588DSQ25T1G maintains output voltage within ±1.5% over −40°C to +85°C ambient temperature. At 25°C, tolerance is tighter: ±1.0%. This is specified in the Electrical Characteristics table under "Output Voltage" with test condition "−40°C ≤ TA ≤ 85°C" and VOUT > 2.0 V, ensuring reliable 2.5 V regulation across industrial and consumer operating ranges.
Does the NCP4588DSQ25T1G require an output capacitor for stability?
No, the NCP4588DSQ25T1G is explicitly designed to be stable with zero output capacitance - a core feature confirmed in the datasheet's title, features list, and Figure 1 schematic annotation ("output capacitor may be omitted"). While adding a 0.1–10 µF ceramic capacitor improves large-signal load transient response, it is never required for loop stability.
What is the purpose of the NC pin on the NCP4588DSQ25T1G SC−70 package?
The NC (No Connection) pin on the NCP4588DSQ25T1G is an unconnected internal terminal. Per the Pin Function Description table, it has no electrical function and must remain unconnected on the PCB. Routing, soldering, or tying this pin to any net - including GND or VIN - violates the device's validated layout and may cause malfunction or reliability issues.
How does the auto-discharge feature of the NCP4588DSQ25T1G operate?
The NCP4588DSQ25T1G (D-version) integrates an internal N-channel MOSFET between VOUT and GND. When the CE pin is driven low, this transistor turns on and actively discharges the output node. As shown in Figures 42–44, VOUT falls rapidly - typically within microseconds - preventing residual voltage from back-powering downstream circuitry during power-down sequences.
What is the maximum allowable input voltage for the NCP4588DSQ25T1G?
The absolute maximum input voltage for the NCP4588DSQ25T1G is 6.0 V, as stated in the Absolute Maximum Ratings table. However, for reliable continuous operation, the recommended input range is 1.4 V to 5.25 V. Exceeding 5.25 V risks exceeding safe operating area limits, especially at elevated temperatures or full load, and may trigger thermal shutdown or degrade long-term reliability.
NCP4588DSQ25T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- 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):
- 0.49V @ 200mA
- Current - Output:
- 200mA
- Current - Quiescent (Iq):
- 25 µA
- Current - Supply (Max):
- -
- PSRR:
- 60dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-88A (SC-70-5/SOT-353)
NCP4588DSQ25T1G FAQ
1.How can I place an order for NCP4588DSQ25T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP4588DSQ25T1G 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 NCP4588DSQ25T1G reliable?
The price and inventory of NCP4588DSQ25T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP4588DSQ25T1G is usually 5 days.
3.What payment methods are accepted for NCP4588DSQ25T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP4588DSQ25T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP4588DSQ25T1G?
NCP4588DSQ25T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP4588DSQ25T1G 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 NCP4588DSQ25T1G?
For technical support, including NCP4588DSQ25T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP4588DSQ25T1G requirements.
6.How does Aetrix verify that NCP4588DSQ25T1G is sourced from the original manufacturer or authorized distributors?
All NCP4588DSQ25T1G 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 NCP4588DSQ25T1G meets industry standards.
7.What is the process for return or replacement of NCP4588DSQ25T1G?
All NCP4588DSQ25T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP4588DSQ25T1G, 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 NCP4588DSQ25T1G part is unused and in its original packaging.
Return procedure for NCP4588DSQ25T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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