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onsemi NCP4624DSQ33T1G
- Part No.:
- NCP4624DSQ33T1G
- Manufacturer:
- onsemi
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
NCP4624DSQ33T1G.pdf
- Description:
- IC REG LINEAR 3.3V 150MA SC88A
- Quantity:
- Payment:
- Shipping:
Inventory:2,121
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Product details
Overview
NCP4624DSQ33T1G from onsemi is a CMOS 150 mA low-dropout linear voltage regulator with 3.3 V fixed output, 2.5 V to 9.8 V input range, ±2% output accuracy, and built-in reverse current protection-designed for industrial equipment and battery-powered portable communication devices powered by 2-cell Li-ion.
For engineers reviewing the NCP4624DSQ33T1G datasheet, pinout, applications, or equivalent options, key selection considerations include dropout voltage at 150 mA (0.61–1.05 V), quiescent current (2.0–3.7 µA), thermal resistance in SC-88A package (263 °C/W), and enable-pin active-high control with internal pull-down.
Technical Context
The NCP4624DSQ33T1G integrates a PMOS pass device with reverse current detection circuitry that activates when VOUT exceeds VIN or VSET (3.3 V), using hysteresis thresholds (VREV_DET = 55–100 mV, VREV_REL = 70–120 mV) to prevent oscillation. Its CE pin enables high-side control with defined logic thresholds (VCEH ≥ 1.7 V, VCEL ≤ 0.8 V) and 0.3–0.9 µA pull-down current.
It operates across −40°C to +85°C ambient, supports stable regulation with only 0.1 µF ceramic output capacitance, and delivers PSRR of 18 dB at 1 kHz for 3.3 V output-optimized for noise-sensitive analog and RF subsystems in compact portable designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V, ±2% accuracy over −40°C to +85°C ensures reliable MCU core or interface rail compliance. |
| Max Input Voltage | 11 V absolute maximum; functional up to 9.8 V at full load-supports wide-input industrial supplies and 2-cell Li-ion (up to 8.4 V). |
| Dropout Voltage | 0.61–1.05 V at 150 mA output-enables operation down to ~3.9 V input while maintaining regulated 3.3 V output. |
| Quiescent Current | 2.0–3.7 µA typical-minimizes standby power loss in always-on battery systems. |
| Line Regulation | 0.02%/V-limits output variation to <±3.3 mV per volt input change, critical for precision analog supply rails. |
| Reverse Current Protection | Active when VOUT > 1.5 V; blocks reverse flow from output to input or ground without external components. |
| Thermal Resistance | 263 °C/W (Junction-to-Air, SC-88A)-requires minimal PCB copper area for thermal management at full load. |
Pinout & Package
Package: SC-88A (SC-70-5/SOT-353), 5-pin surface-mount, 1.80 × 1.35 mm footprint, exposed pad (EP) recommended connected to GND for thermal and EMI performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Input supply connection | Accepts 2.5–9.8 V DC; requires 100 nF ceramic decoupling capacitor placed adjacent to pin. |
| 2 (GND) | Ground reference | Common return path for input, output, and CE; must be low-impedance and tied to EP if used. |
| 3 (CE) | Chip enable input | Active-high logic control (VCEH ≥ 1.7 V); internal 0.3–0.9 µA pull-down holds device OFF if floating. |
| 4 (NC) | No-connect terminal | Internally unconnected; must remain unconnected on PCB-no routing or stitching allowed. |
| 5 (VOUT) | Regulated output | Delivers 3.3 V ±2% at up to 150 mA; requires 100 nF ceramic output capacitor directly at pin. |
| EP | Exposed thermal pad | Not electrically functional but critical for thermal dissipation; recommended to connect to GND plane via multiple vias. |
Key Features
| Feature | Design Value |
|---|---|
| Wide input voltage range | Operates from 2.5 V up to 9.8 V-eliminates need for pre-regulation in multi-battery or industrial supply designs. |
| Built-in reverse current protection | Prevents backfeed from output to input during hot-swap or battery removal-no external diode or MOSFET required. |
| Ultra-low quiescent current | 2.0 µA typical at zero load-extends battery life in always-on IoT sensors and remote controls. |
| Stable with 0.1 µF ceramic output cap | Enables use of small, low-ESR MLCCs instead of larger tantalum or aluminum electrolytics-reducing board area and cost. |
| High accuracy over temperature | ±2% output tolerance maintained from −40°C to +85°C-ensures reliable operation in automotive cabin or industrial enclosures. |
Applications
| Industrial Control Sensors | Portable Communication Devices |
|---|---|
Use Scenario: Powering 3.3 V microcontrollers and analog front-ends in DIN-rail mounted PLC I/O modules operating in −40°C to +70°C environments. IC Role / Device Role / Timing Role: Primary 3.3 V LDO regulator delivering clean, stable supply to MCU, ADC, and RS-485 transceivers. Use Value: Wide 2.5–9.8 V input range accommodates unregulated 5–9 V industrial rails; ±2% accuracy ensures ADC reference stability. | Use Scenario: Supplying 3.3 V to Bluetooth SoCs and audio codecs in handheld barcode scanners powered by 2-cell Li-ion (6–8.4 V). IC Role / Device Role / Timing Role: Main system LDO enabling low-power sleep mode via CE pin control and fast wake-up response. Use Value: 2.0 µA quiescent current extends battery runtime; reverse current protection prevents discharge through USB port during charging. |
| Car Audio Head Units | Home Appliance Control Boards |
Use Scenario: Regulating 3.3 V for DSP, display controller, and CAN transceiver in vehicle infotainment head units with 9–16 V battery input. IC Role / Device Role / Timing Role: Secondary LDO post-regulator after buck converter, providing low-noise supply for sensitive audio processing circuits. Use Value: 18 dB PSRR at 1 kHz suppresses switching noise from upstream DC/DC; SC-88A package fits tight layout constraints. | Use Scenario: Powering 3.3 V Wi-Fi modules and touch controllers in smart washing machine control boards exposed to humidity and thermal cycling. IC Role / Device Role / Timing Role: Isolated 3.3 V supply for wireless connectivity subsystem, enabled/disabled via main MCU GPIO. Use Value: CE pin logic compatibility with 3.3 V GPIO eliminates level-shifting; ±2% output accuracy maintains RF link stability. |
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 | 150 mA max, 6 V max input, 2.5 µA IQ, no reverse current protection | Lacks integrated reverse current blocking-requires external diode for backfeed prevention | Choose for cost-sensitive, low-input-voltage (<6 V) designs where reverse protection is handled externally. |
| Torex XC6206P332MR-G | 150 mA max, 6 V max input, 1 µA IQ, no CE pin or reverse protection | Fixed enable function (no CE control); no reverse current or current limit circuitry | Select when ultra-low IQ is primary requirement and system-level enable/reverse protection is implemented elsewhere. |
Compared with MCP1700T-3302E/TT and XC6206P332MR-G, the NCP4624DSQ33T1G uniquely combines 11 V input capability, active reverse current protection, and CE control in SC-88A-making it suitable for higher-voltage battery and industrial applications where those features reduce BOM count and improve reliability.
Availability
NCP4624DSQ33T1G is available at Aetrix Electronics and suitable for industrial control sensors, portable communication devices, car audio head units, and home appliance control boards requiring stable component supply with long lifecycle assurance.
Supply support for NCP4624DSQ33T1G 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 delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCP4624DSQ33T1G belongs to the NCP4624 family of wide-input, low-quiescent-current LDOs designed specifically for battery-powered and industrial equipment where input voltage variability, standby power, and reverse current safety are critical.
FAQ
What is the maximum input voltage the NCP4624DSQ33T1G can safely handle?
The NCP4624DSQ33T1G has an absolute maximum input voltage rating of 12 V, but its specified functional operating range is up to 11 V. For reliable continuous operation at full 150 mA load, the datasheet recommends limiting input to 9.8 V. Exceeding 11 V risks permanent damage, and operation above 9.8 V should be validated for thermal performance in the target application layout.
Does the NCP4624DSQ33T1G require an external capacitor on the CE pin?
No, the NCP4624DSQ33T1G does not require an external capacitor on the CE pin. It features an internal pull-down current source (0.3–0.9 µA) that ensures the device remains disabled when the CE pin is left floating. Adding external capacitance may slow enable/disable transitions and is unnecessary unless intentional filtering of CE signal noise is required in high-EMI environments.
Can the NCP4624DSQ33T1G be used with a 0.1 µF output capacitor?
Yes, the NCP4624DSQ33T1G is explicitly characterized and guaranteed stable with a 0.1 µF ceramic output capacitor (100 nF), as confirmed in the Electrical Characteristics table and Application Information section. This eliminates the need for larger or higher-ESR capacitors, reducing solution size and cost-provided the capacitor is placed directly at the VOUT and GND pins with short traces.
What is the purpose of the NC pin (Pin 4) on the NCP4624DSQ33T1G SC-88A package?
Pin 4 of the NCP4624DSQ33T1G in SC-88A package is designated NC (No Connect) and is internally unconnected. It must remain unconnected on the PCB-no trace, solder mask opening, or thermal relief should be applied. Routing to this pin or connecting it to any net may cause unpredictable behavior or damage due to internal floating node coupling.
How does reverse current protection work in the NCP4624DSQ33T1G?
The NCP4624DSQ33T1G uses an internal reverse detector circuit that monitors VOUT relative to VIN and VSET (3.3 V). When VOUT exceeds VIN or 3.3 V by ≥55 mV (detection threshold), it disables the PMOS pass device and blocks reverse current flow. Release occurs only after VOUT drops ≥70 mV below the threshold, ensuring hysteresis prevents oscillation. This protection is active for VOUT > 1.5 V and requires no external components.
NCP4624DSQ33T1G 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):
- 11V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.05V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 3.7 µA
- Current - Supply (Max):
- -
- PSRR:
- 18dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Reverse Polarity
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-88A (SC-70-5/SOT-353)
NCP4624DSQ33T1G FAQ
1.How can I place an order for NCP4624DSQ33T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP4624DSQ33T1G 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 NCP4624DSQ33T1G reliable?
The price and inventory of NCP4624DSQ33T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP4624DSQ33T1G is usually 5 days.
3.What payment methods are accepted for NCP4624DSQ33T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP4624DSQ33T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP4624DSQ33T1G?
NCP4624DSQ33T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP4624DSQ33T1G 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 NCP4624DSQ33T1G?
For technical support, including NCP4624DSQ33T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP4624DSQ33T1G requirements.
6.How does Aetrix verify that NCP4624DSQ33T1G is sourced from the original manufacturer or authorized distributors?
All NCP4624DSQ33T1G 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 NCP4624DSQ33T1G meets industry standards.
7.What is the process for return or replacement of NCP4624DSQ33T1G?
All NCP4624DSQ33T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP4624DSQ33T1G, 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 NCP4624DSQ33T1G part is unused and in its original packaging.
Return procedure for NCP4624DSQ33T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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