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onsemi NCP4626HSN033T1G
- Part No.:
- NCP4626HSN033T1G
- Manufacturer:
- onsemi
- Package:
- SC-74A, SOT-753
- Datasheet:
-
NCP4626HSN033T1G.pdf
- Description:
- IC REG LINEAR 3.3V 300MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,713
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Product details
Overview
NCP4626HSN033T1G from onsemi is a CMOS 300 mA low dropout linear regulator with reverse current protection, 3.3 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 serves as a primary power rail for microcontrollers and sensors in battery-backed audio-visual systems.
For engineers reviewing the NCP4626HSN033T1G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at 300 mA (550 mV typ. in fast mode), quiescent current (6 µA typ. in low-power mode), reverse current blocking capability, thermal shutdown behavior, and compatibility with 2.2 µF input / 4.7 µF output ceramic capacitors.
Technical Context
The NCP4626HSN033T1G implements a CMOS pass transistor architecture with integrated reverse current detection and fold-back current limiting. Its ECO pin selects between fast mode (lower dropout, better transient response) and low-power mode (6 µA IQ), enabling dynamic trade-offs between efficiency and performance.
It features internal thermal shutdown (150°C trip, 130°C release), PSRR of 60 dB at 1 kHz (≥5 V output), and stable operation with minimal external components-requiring only 2.2 µF input and 4.7 µF output ceramic capacitors. The device tolerates VIN up to 18 V absolute maximum and supports VOUT > VIN reverse bias protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±1.5% (fast mode), ±2.5% (low-power mode); enables precise MCU core/sensor rail regulation. |
| Max Output Current | 300 mA continuous; sufficient for powering ARM Cortex-M0+ MCUs, I²C sensors, and low-power audio codecs. |
| Dropout Voltage | 550 mV typ. @ 300 mA, 3.3 V out, fast mode; allows regulation from 3.85 V input (e.g., single Li-ion cell + margin). |
| Quiescent Current | 6 µA typ. @ 0 mA load, low-power mode; extends battery life in always-on standby circuits. |
| PSRR | 60 dB @ 1 kHz; suppresses switching noise from upstream DC-DC converters feeding the LDO input. |
| Reverse Current Protection | Blocks current flow from VOUT to VIN when VOUT > VIN (e.g., during backup battery switchover); eliminates need for external diode. |
| Thermal Shutdown | Activates at 150°C junction temperature; auto-restarts at 130°C; protects against sustained overload or poor PCB heatsinking. |
Pinout & Package
Package: SOT-23-5 (Case 1212), Pb-free, 2.7 mm × 2.5 mm footprint, exposed pad not present (non-thermal enhanced variant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (ECO) | Mode select input | High = fast mode (lower dropout, better transients); Low = low-power mode (6 µA IQ); must not float. |
| 2 (GND) | Ground reference | Common return for VIN, VOUT, CE, and ECO; connects to PCB ground plane for stability and noise rejection. |
| 3 (CE) | Chip enable input | Active-high logic; internal pull-down; tie to VIN if always-on operation required. |
| 4 (VOUT) | Regulated output | 3.3 V supply rail; requires 4.7 µF ceramic capacitor placed adjacent to pin for stability and transient response. |
| 5 (VIN) | Input supply | 3.5–16 V unregulated input; requires 2.2 µF ceramic capacitor placed adjacent to pin to suppress line noise and improve PSRR. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-mode ECO control | Selects between fast mode (550 mV dropout @ 300 mA) and low-power mode (6 µA IQ) without changing BOM or layout. |
| Reverse current blocking | Prevents backfeed from 3.3 V rail into higher-voltage sources (e.g., during hot-swap or battery backup transitions), eliminating external Schottky diode. |
| Stable with small ceramics | Guaranteed stability using only 2.2 µF input and 4.7 µF output X7R/X5R ceramic capacitors-no electrolytic or tantalum required. |
| Fold-back current limit | Reduces output current and voltage during overload, limiting power dissipation and preventing thermal runaway under short-circuit conditions. |
| 18 V absolute max input | Withstands 16 V operating input plus 2 V margin; compatible with 12 V automotive or industrial rails with transient spikes. |
Applications
| Digital Home Appliances | Audio Visual Equipment |
|---|---|
Use Scenario: Powering microcontroller, display driver, and IR receiver in smart TV remote control units with coin-cell backup. IC Role / Device Role / Timing Role: Primary 3.3 V LDO delivering regulated rail to ultra-low-power SoC during main power loss; reverse protection prevents backup battery discharge through main supply. Use Value: Enables seamless transition to battery backup without external diodes or additional control logic, reducing component count and board area. | Use Scenario: Supplying HDMI port controller and EDID EEPROM in set-top boxes where clean 3.3 V is required for signal integrity. IC Role / Device Role / Timing Role: Noise-suppressed 3.3 V source with 60 dB PSRR at 1 kHz, rejecting switching noise from upstream 12 V → 5 V DC-DC converter. Use Value: Maintains HDMI compliance by minimizing power rail noise that could induce jitter or packet errors in high-speed digital links. |
| Battery Backup Circuits | Industrial Sensor Nodes |
Use Scenario: Providing fail-safe 3.3 V rail for real-time clock (RTC) and SRAM in PLC modules during AC mains failure. IC Role / Device Role / Timing Role: Reverse-current-protected LDO ensuring RTC remains powered by backup supercapacitor even when main 5 V rail collapses. Use Value: Eliminates need for discrete OR-ing FET or diode, reducing BOM cost and forward voltage drop that would shorten backup runtime. | Use Scenario: Regulating power for low-power LoRaWAN node with STM32L4 MCU and environmental sensor array operating from 3.6 V Li-SOCl₂ battery. IC Role / Device Role / Timing Role: Ultra-low-quiescent (6 µA) LDO in low-power mode extending battery life beyond 10 years in sleep-dominated duty cycles. Use Value: Delivers guaranteed 300 mA peak current for radio transmission bursts while maintaining sub-µA average system current during deep sleep. |
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 | 250 mA max output, 6 µA IQ, no ECO mode or reverse current protection; SOT-23-3 package (no CE/ECO pins). | Lacks enable and mode control; unsuitable for systems requiring dynamic power-state management or VOUT > VIN scenarios. | Choose only for simple, always-on, low-current (<250 mA) applications where pin count and feature set are minimized. |
| TLS850B2TE/V2 | 500 mA, integrated watchdog and reset, AEC-Q100 qualified, but 3.3 V version has 1.2 V min input; no reverse current blocking. | Designed for automotive body electronics; overqualified for consumer/industrial use; lacks reverse protection critical for backup circuits. | Select only when automotive qualification, reset generation, or higher current is mandatory-and reverse protection is handled externally. |
Compared with MCP1700T-3302E/TT and TLS850B2TE/V2, the NCP4626HSN033T1G uniquely combines 300 mA output, dual-mode ECO control, reverse current blocking, and SOT-23-5 pinout-enabling compact, robust, and flexible power management in space-constrained backup and portable systems without added discretes.
Availability
NCP4626HSN033T1G is available at Aetrix Electronics and suitable for digital home appliances, audio visual equipment, and battery backup circuits requiring stable component supply, long-term manufacturability, and RoHS-compliant packaging.
Supply support for NCP4626HSN033T1G 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 (Nasdaq: ON) is a global semiconductor leader delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCP4626 series belongs to onsemi's precision analog LDO portfolio, designed specifically for power-sensitive embedded systems requiring reverse current protection, ultra-low IQ, and dual-mode performance optimization.
FAQ
What is the output voltage tolerance of the NCP4626HSN033T1G in fast mode?
The NCP4626HSN033T1G has an output voltage tolerance of ±1.5% in fast mode across −40°C to +85°C ambient temperature. This specification ensures reliable operation for 3.3 V I/O interfaces and MCU cores requiring tight regulation, and is verified under standard test conditions (IOUT = 1 mA, VIN = VOUT + 3.0 V).
Does the NCP4626HSN033T1G require external capacitors, and what values are recommended?
Yes, the NCP4626HSN033T1G requires external capacitors: a minimum 2.2 µF ceramic capacitor on VIN and 4.7 µF ceramic capacitor on VOUT. These values ensure stability, adequate PSRR, and transient response per the datasheet. X7R or X5R dielectrics are recommended; placement must be adjacent to respective pins to minimize parasitic inductance.
How does the ECO pin affect dropout voltage and quiescent current in the NCP4626HSN033T1G?
When the ECO pin is driven high (fast mode), the NCP4626HSN033T1G achieves 550 mV typical dropout at 300 mA and 60 dB PSRR at 1 kHz-but draws ~100 µA quiescent current. When ECO is low (low-power mode), IQ drops to 6 µA typ., but dropout increases to 700 mV typ. at 300 mA and PSRR decreases slightly.
Can the NCP4626HSN033T1G be used in applications where VOUT may exceed VIN, such as battery backup switchover?
Yes-the NCP4626HSN033T1G includes integrated reverse current protection that blocks current flow when VOUT > VIN (e.g., during backup battery activation). This eliminates the need for an external blocking diode or MOSFET, preserving output voltage headroom and simplifying design in dual-supply systems.
What thermal protection features does the NCP4626HSN033T1G provide?
The NCP4626HSN033T1G incorporates thermal shutdown that activates at 150°C junction temperature and releases at 130°C. This hysteresis prevents oscillation near trip point. Under sustained overload, the device cycles on/off to limit average power dissipation-critical for reliability in sealed enclosures or high-ambient environments.
NCP4626HSN033T1G 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):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1V @ 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
NCP4626HSN033T1G FAQ
1.How can I place an order for NCP4626HSN033T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP4626HSN033T1G 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 NCP4626HSN033T1G reliable?
The price and inventory of NCP4626HSN033T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP4626HSN033T1G is usually 5 days.
3.What payment methods are accepted for NCP4626HSN033T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP4626HSN033T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP4626HSN033T1G?
NCP4626HSN033T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP4626HSN033T1G 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 NCP4626HSN033T1G?
For technical support, including NCP4626HSN033T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP4626HSN033T1G requirements.
6.How does Aetrix verify that NCP4626HSN033T1G is sourced from the original manufacturer or authorized distributors?
All NCP4626HSN033T1G 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 NCP4626HSN033T1G meets industry standards.
7.What is the process for return or replacement of NCP4626HSN033T1G?
All NCP4626HSN033T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP4626HSN033T1G, 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 NCP4626HSN033T1G part is unused and in its original packaging.
Return procedure for NCP4626HSN033T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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