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onsemi NCP4626DSN030T1G
- Part No.:
- NCP4626DSN030T1G
- Manufacturer:
- onsemi
- Package:
- SC-74A, SOT-753
- Datasheet:
-
NCP4626DSN030T1G.pdf
- Description:
- IC REG LINEAR 3V 300MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,547
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Product details
Overview
NCP4626DSN030T1G from onsemi is a 300 mA CMOS low dropout linear regulator with reverse current protection, 3.0 V fixed output, 3.5–16 V input range, ±1.5% output accuracy in fast mode, and dual-mode ECO pin control (fast/low-power). It operates in digital home appliances and audio-visual equipment where VIN may fall below VOUT.
For engineers reviewing the NCP4626DSN030T1G datasheet, pinout, applications, or equivalent options, key selection criteria include reverse-current blocking capability, auto-discharge functionality, thermal shutdown at 150°C, and SOT-23-5 package compatibility with space-constrained PCB layouts.
Technical Context
The NCP4626DSN030T1G integrates a precision bandgap reference, fold-back current limiting, reverse voltage detector, and thermal shutdown circuitry. Its ECO pin selects between fast mode (550 mV dropout @ 300 mA, 60 dB PSRR at 1 kHz) and low-power mode (6 µA quiescent current, ±2.5% output accuracy).
It supports stable operation with 2.2 µF ceramic input and 4.7 µF ceramic output capacitors, features internal pull-down on CE, and includes an integrated N-channel discharge transistor (D-version) for rapid VOUT collapse during disable.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0 V ±1.5% (fast mode), enabling precise biasing of 3.3 V–tolerant logic without external feedback resistors |
| Max Output Current | 300 mA continuous, sufficient for powering microcontrollers, sensors, and audio codecs in compact systems |
| Input Voltage Range | 3.5 V to 16.0 V, supporting wide-input industrial and automotive-supply rails including 12 V nominal systems |
| Dropout Voltage | 550 mV typ. @ 300 mA (fast mode), allowing regulation down to VIN = 3.55 V while maintaining 3.0 V output |
| Quiescent Current | 6 µA typ. (low-power mode), extending battery life in always-on standby circuits |
| PSRR | 60 dB @ 1 kHz, suppressing ripple from noisy DC-DC converters upstream |
| Reverse Current Limit | <0.1 µA when VOUT > VIN, preventing backfeed in multi-rail systems with shared outputs |
Pinout & Package
Package: SOT-23-5 (Case 1212), 2.7 mm × 2.5 mm × 1.3 mm body, Pb-free, with exposed pad not electrically connected (GND-connected tab optional per design).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (ECO) | Mode selector input | High = fast mode (lower dropout, better transient response); Low = low-power mode (6 µA IQ); must not float |
| 2 (GND) | Ground reference | Primary return path for load current and internal bias; connects to exposed pad (optional but recommended) |
| 3 (CE) | Chip enable input | Active-high logic control; internal pull-down allows direct connection to VIN for always-on operation |
| 4 (VOUT) | Regulated output | 3.0 V fixed output with auto-discharge transistor (D-version) active during disable to rapidly drain COUT |
| 5 (VIN) | Input supply | Accepts 3.5–16 V; requires 2.2 µF ceramic capacitor placed adjacent to minimize high-frequency noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| Reverse current protection | Blocks <0.1 µA reverse current when VOUT > VIN, eliminating need for external blocking diode in backup power paths |
| Auto-discharge function | Integrated N-ch transistor discharges VOUT to GND within milliseconds upon CE deactivation, meeting fast-power-down requirements |
| Dual-mode ECO control | Selects between 550 mV dropout/fast response (fast mode) or 6 µA IQ/±2.5% accuracy (low-power mode) via single GPIO |
| Thermal shutdown with hysteresis | Shuts down at 150°C junction temperature; restarts at 130°C, preventing latch-up during sustained overload |
| Stable with small ceramics | Guaranteed stability with ≥2.2 µF X7R/X5R input and ≥4.7 µF output capacitors-no ESR requirements or compensation needed |
Applications
| Digital Home Appliances | Audio Visual Equipment |
|---|---|
Use Scenario: Powering MCU, display driver, and IR receiver in smart TV standby subsystem. IC Role / Device Role / Timing Role: Primary 3.0 V LDO supplying always-on logic with ultra-low quiescent current during sleep. Use Value: 6 µA IQ extends standby battery life; reverse-current blocking prevents backfeed from main 3.3 V rail during AC loss. | Use Scenario: Regulating 3.0 V supply for HDMI receiver IC and SPDIF transceiver in AV receiver. IC Role / Device Role / Timing Role: Noise-sensitive analog/digital interface LDO decoupled from switching DC-DC converter. Use Value: 60 dB PSRR at 1 kHz suppresses switching noise; fast-mode ECO enables clean startup during hot-plug events. |
| Battery Backup Circuits | Industrial Control Sensors |
Use Scenario: Maintaining RTC and SRAM power during main supply interruption using coin-cell or supercapacitor. IC Role / Device Role / Timing Role: Reverse-blocking LDO ensuring no current flows from backup source into main rail. Use Value: <0.1 µA reverse leakage preserves backup energy; auto-discharge clears residual voltage before main rail reassertion. | Use Scenario: Supplying 3.0 V to temperature/humidity sensor and CAN transceiver in factory-floor node. IC Role / Device Role / Timing Role: Robust local regulator tolerant of 16 V surges and −40°C to +85°C ambient. Use Value: 18 V absolute max input withstands load-dump transients; thermal shutdown protects against enclosure overheating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3002E/TT | 250 mA max output, 6 µA IQ, no ECO mode or reverse-current protection | Lacks auto-discharge and reverse blocking; requires external diode for backup paths | Choose only if lower current and simpler control suffice; verify thermal margin at 300 mA |
| TLS820B2ELVSE | Automotive-grade 300 mA LDO, 3.0 V output, integrated watchdog, higher cost | Qualified to AEC-Q100 Grade 1; includes reset and window watchdog-overkill for consumer apps | Select only for automotive designs requiring functional safety support; not drop-in due to different pinout |
Compared with MCP1700T-3002E/TT and TLS820B2ELVSE, the NCP4626DSN030T1G uniquely combines reverse-current blocking, auto-discharge, and dual-mode ECO in a cost-optimized SOT-23-5 package-enabling compact, fail-safe power sequencing in consumer and industrial edge nodes without external components.
Availability
NCP4626DSN030T1G is available at Aetrix Electronics and suitable for digital home appliances, audio visual equipment, and battery backup circuits requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for NCP4626DSN030T1G 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 is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCP4626 series belongs to onsemi's precision LDO portfolio designed for space-constrained, low-noise, and reverse-voltage-critical applications-emphasizing reliability, minimal external components, and seamless integration into mixed-signal subsystems.
FAQ
What is the maximum input voltage rating for the NCP4626DSN030T1G?
The NCP4626DSN030T1G has an absolute maximum input voltage rating of 18.0 V, as specified in the Absolute Maximum Ratings table. Operation above this level risks permanent damage. The recommended operating input range remains 3.5 V to 16.0 V for reliable performance across temperature and load conditions. This 18 V tolerance supports transient immunity in 12 V automotive and industrial systems.
Does the NCP4626DSN030T1G provide reverse current protection, and how does it work?
Yes, the NCP4626DSN030T1G provides active reverse current protection with leakage <0.1 µA when VOUT exceeds VIN. Internal circuitry detects reverse voltage and disables the pass element, preventing backfeed. This eliminates the need for an external Schottky diode in battery backup or dual-supply configurations-reducing BOM count, forward voltage drop, and board area. The feature is inherent to the device architecture and requires no external components.
What is the purpose of the ECO pin on the NCP4626DSN030T1G, and what happens if it's left floating?
The ECO pin on the NCP4626DSN030T1G selects between fast mode (lower dropout, better transient response) and low-power mode (6 µA IQ). It must be driven to a defined logic level: VIN for fast mode or GND for low-power mode. Leaving it floating is prohibited-it may cause undefined internal currents, erratic regulation, or increased quiescent current. Always tie ECO directly to VIN or GND via a robust connection; do not rely on pull-ups/downs unless explicitly validated.
How does the auto-discharge function operate in the NCP4626DSN030T1G?
The NCP4626DSN030T1G (D-version) integrates an N-channel transistor between VOUT and GND that activates automatically when the CE pin is pulled low. This discharges the output capacitor rapidly-typically within milliseconds-ensuring fast power-down compliance for systems requiring controlled voltage decay (e.g., memory retention circuits or hot-swap interfaces). Discharge is independent of input voltage and occurs even with VIN removed, making it ideal for battery-backed applications.
What are the minimum and recommended capacitor values for stable operation of the NCP4626DSN030T1G?
The NCP4626DSN030T1G is stable with a minimum 2.2 µF ceramic input capacitor (CIN) and 4.7 µF ceramic output capacitor (COUT), both placed as close as possible to their respective pins. Larger values improve line/load transient response and PSRR. X7R or X5R dielectrics are recommended for temperature stability. No ESR requirements or series resistance are needed-unlike older LDOs-simplifying layout and reducing bill-of-materials cost.
NCP4626DSN030T1G 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):
- 16V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.5V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 100 µA
- Current - Supply (Max):
- -
- PSRR:
- 70dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
NCP4626DSN030T1G FAQ
1.How can I place an order for NCP4626DSN030T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP4626DSN030T1G 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 NCP4626DSN030T1G reliable?
The price and inventory of NCP4626DSN030T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP4626DSN030T1G is usually 5 days.
3.What payment methods are accepted for NCP4626DSN030T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP4626DSN030T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP4626DSN030T1G?
NCP4626DSN030T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP4626DSN030T1G 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 NCP4626DSN030T1G?
For technical support, including NCP4626DSN030T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP4626DSN030T1G requirements.
6.How does Aetrix verify that NCP4626DSN030T1G is sourced from the original manufacturer or authorized distributors?
All NCP4626DSN030T1G 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 NCP4626DSN030T1G meets industry standards.
7.What is the process for return or replacement of NCP4626DSN030T1G?
All NCP4626DSN030T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP4626DSN030T1G, 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 NCP4626DSN030T1G part is unused and in its original packaging.
Return procedure for NCP4626DSN030T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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