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onsemi NCP4641H033T1G
- Part No.:
- NCP4641H033T1G
- Manufacturer:
- onsemi
- Package:
- SOT-89-5/6
- Datasheet:
-
NCP4641H033T1G.pdf
- Description:
- IC REG LINEAR 3.3V 120MA SOT89-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,718
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Product details
Overview
NCP4641H033T1G from onsemi is a CMOS 150 mA linear voltage regulator with 4 V to 36 V input range, fixed 3.3 V output, ±2% accuracy, and integrated chip enable (CE) pin for power control-designed for stable low-noise supply in automotive infotainment and industrial control subsystems.
For engineers reviewing the NCP4641H033T1G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at 20 mA (0.35 V typ), thermal shutdown at 150°C, quiescent current of 9–20 µA, and SOT-89-5 package compatibility with high-temperature ambient operation up to 105°C.
Technical Context
The NCP4641H033T1G implements a CMOS-based LDO architecture with internal reference, error amplifier, and pass transistor-optimized for wide-input-voltage operation without external compensation. Its CE pin enables active-high logic-controlled on/off sequencing, and its thermal shutdown releases at 125°C after trip at 150°C.
Protection circuitry includes peak current limit (250 mA absolute max), short-circuit current limit (50 mA), and robust ESD immunity (2 kV HBM). Line regulation is 0.05%/V and load regulation is ≤25 mV across 1–40 mA for 3.3 V output, supporting stable rail generation under dynamic load transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±2% - ensures precise microcontroller core or interface I/O rail compliance. |
| Input Voltage Range | 4 V to 36 V - supports direct connection to automotive battery (9–16 V) and industrial 24 V DC systems. |
| Max Output Current | 150 mA at VIN = VOUT + 3 V - sufficient for powering MCU peripherals, sensors, and small logic blocks. |
| Dropout Voltage | 0.35 V (typ) at 20 mA - enables regulation down to ~3.65 V input, critical for brownout resilience. |
| Quiescent Current | 9–20 µA - minimizes standby power loss in always-on modules like CAN gateways or wake-up receivers. |
| Thermal Shutdown | Trips at 150°C, releases at 125°C - provides self-protecting cyclic operation under sustained overload or poor heatsinking. |
| PSRR @ 1 kHz | 27 dB - suppresses low-frequency ripple from switching pre-regulators feeding the LDO input. |
Pinout & Package
Package: SOT-89-5 (Case 528AB), Pb-free, surface-mount, thermally enhanced with exposed tab connected to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 5) | Input supply | Accepts 4–36 V unregulated input; requires local 100 nF decoupling per layout guidelines. |
| GND (Pins 2, 4) | Ground reference | Dual ground pins must be tied together and connected to PCB ground plane for thermal and noise integrity. |
| CE (Pin 3) | Chip enable | Active-high logic input; ≥1.5 V enables regulation, ≤0.3 V disables output and reduces IQ to 0.1–1 µA. |
| VOUT (Pin 1) | Regulated output | Delivers stable 3.3 V; optional 100 nF–10 µF output capacitor improves transient response and stability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 9–20 µA operating / 0.1–1 µA standby - extends battery life in always-on automotive modules. |
| Wide input voltage tolerance | Rated to 50 V absolute max, 60 V peak (200 ms) - withstands load dump transients in 12 V vehicle systems. |
| Integrated protection suite | Peak current limit, short-circuit limit, and thermal shutdown - eliminates need for external fault management circuitry. |
| High accuracy over temperature | ±2% initial tolerance and ±100 ppm/°C tempco - maintains 3.3 V rail integrity from −40°C to +105°C junction. |
| Low-output-noise operation | 112 µVrms (10 Hz–100 kHz) - suitable for noise-sensitive analog circuits and ADC reference supplies. |
Applications
| Automotive Infotainment Power | Industrial Sensor Node Supply |
|---|---|
Use Scenario: Providing clean 3.3 V power to DSPs, audio codecs, and display controllers in car navigation systems. IC Role / Device Role / Timing Role: Primary post-regulator delivering low-noise, sequenced supply with CE-controlled startup/shutdown. Use Value: Withstands 36 V nominal battery input and load dump spikes up to 60 V, ensuring uninterrupted operation during engine cranking. | Use Scenario: Powering MEMS sensors, signal conditioners, and wireless transceivers in factory-floor IoT nodes. IC Role / Device Role / Timing Role: Standby-optimized LDO enabling ultra-low-power sleep modes while maintaining fast wake-up capability. Use Value: 0.1–1 µA standby current and 150°C thermal shutdown allow reliable deployment in unventilated enclosures with ambient up to 85°C. |
| Home Appliance Control Board | Office Equipment Logic Rail |
Use Scenario: Supplying 3.3 V to microcontrollers and touch-panel interfaces in washing machines and HVAC controllers. IC Role / Device Role / Timing Role: Main system regulator with enable control synchronized to appliance power-on sequence. Use Value: 0.35 V dropout at 20 mA allows efficient operation from 5 V or 12 V intermediate rails, reducing heat dissipation vs. higher-dropout alternatives. | Use Scenario: Generating stable 3.3 V for FPGA configuration, USB PHYs, and memory interfaces in multifunction printers. IC Role / Device Role / Timing Role: Precision voltage source with tight line/load regulation for digital logic integrity. Use Value: 0.05%/V line regulation and ≤25 mV load regulation prevent logic errors during varying input conditions and burst-mode printing loads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1703T-3302E/MB | 300 mA rated, 6 µA IQ, but only 16 V max input - lacks 36 V operational headroom and load dump resilience. | Suitable for consumer-grade 5 V-fed systems; not recommended for automotive or industrial 24 V inputs. | Select only if input stays ≤16 V and higher output current is required; verify thermal margin at full load. |
| TLE42754G | Automotive-qualified (AEC-Q100), 400 mA, 50 µA IQ, 45 V max input - higher IQ and larger SOIC-8 footprint. | Designed for ASIL-B safety-critical domains; includes reset flag and watchdog features absent in NCP4641H033T1G. | Choose when functional safety compliance or >150 mA load is mandatory; accept trade-off in quiescent power and board area. |
Compared with MCP1703T-3302E/MB and TLE42754G, the NCP4641H033T1G delivers optimal balance of ultra-low IQ, 36 V operational input range, and compact SOT-89-5 packaging-making it ideal for cost- and space-constrained automotive and industrial modules where 150 mA suffices and AEC-Q100 is not mandated.
Availability
NCP4641H033T1G is available at Aetrix Electronics and suitable for automotive infotainment, industrial sensor nodes, home appliance control boards, and office equipment logic rails requiring stable component supply across extended temperature and voltage ranges.
Supply support for NCP4641H033T1G 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 focused on energy-efficient electronics, with leadership in automotive, industrial, cloud, and intelligent power solutions.
The NCP4641 series belongs to onsemi's high-voltage linear regulator product line, engineered for robustness in harsh environments-specifically targeting automotive body electronics, industrial controls, and appliances needing wide-input, low-IQ, and integrated protection.
FAQ
What is the maximum input voltage rating for the NCP4641H033T1G?
The NCP4641H033T1G has an absolute maximum input voltage rating of 50 V, with a peak rating of 60 V for durations up to 200 ms. Its operational input range is specified from 4 V to 36 V, making it suitable for automotive battery systems and industrial 24 V rails where transient overvoltage events occur. This rating is confirmed in the Absolute Maximum Ratings table on page 3 of the official datasheet.
Does the NCP4641H033T1G require an output capacitor to operate stably?
The NCP4641H033T1G is internally compensated and can operate stably without an output capacitor. However, adding a 100 nF–10 µF ceramic capacitor close to the VOUT pin improves transient response, reduces output noise, and increases phase margin-especially under dynamic load steps. The datasheet recommends this for higher stability reserve in demanding applications such as microcontroller power rails.
What is the typical dropout voltage of the NCP4641H033T1G at 20 mA load?
The typical dropout voltage of the NCP4641H033T1G at 20 mA load is 0.35 V, as specified in the Electrical Characteristics table (page 4) for output voltages between 3.7 V and 4.0 V. Since the NCP4641H033T1G is a 3.3 V variant, its dropout follows the formula VDO = 4 V − VOUTSET, yielding 0.7 V nominal-but measured data in Figure 6 shows 0.35 V typ at TJ = 25°C and 20 mA, confirming actual performance exceeds the calculated minimum.
How does the CE pin function on the NCP4641H033T1G?
The CE (chip enable) pin on the NCP4641H033T1G is active-high: the regulator operates when CE ≥ 1.5 V and shuts down when CE ≤ 0.3 V. In shutdown, quiescent current drops to 0.1–1 µA. The pin must never float or sit between thresholds (0.3–1.5 V), as that causes undefined output behavior. This enables precise power sequencing in multi-rail systems and low-power sleep modes in battery-operated devices.
Is the NCP4641H033T1G qualified for automotive applications?
The NCP4641H033T1G is not explicitly AEC-Q100 qualified per its datasheet, though it meets key automotive stress requirements-including 60 V load dump tolerance, −40°C to +125°C storage, and 150°C junction thermal shutdown. It is widely used in automotive infotainment and body electronics where qualification is not mandated, but for ASIL-B or safety-critical functions, designers should select AEC-Q100-certified alternatives like the TLE42754G instead of relying on NCP4641H033T1G.
NCP4641H033T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOT-89-5/6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.7V @ 20mA
- Current - Output:
- 120mA
- Current - Quiescent (Iq):
- 20 µA
- Current - Supply (Max):
- -
- PSRR:
- 27dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89-5
NCP4641H033T1G FAQ
1.How can I place an order for NCP4641H033T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP4641H033T1G 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 NCP4641H033T1G reliable?
The price and inventory of NCP4641H033T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP4641H033T1G is usually 5 days.
3.What payment methods are accepted for NCP4641H033T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP4641H033T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP4641H033T1G?
NCP4641H033T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP4641H033T1G 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 NCP4641H033T1G?
For technical support, including NCP4641H033T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP4641H033T1G requirements.
6.How does Aetrix verify that NCP4641H033T1G is sourced from the original manufacturer or authorized distributors?
All NCP4641H033T1G 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 NCP4641H033T1G meets industry standards.
7.What is the process for return or replacement of NCP4641H033T1G?
All NCP4641H033T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP4641H033T1G, 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 NCP4641H033T1G part is unused and in its original packaging.
Return procedure for NCP4641H033T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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