NCP1117ST33T3G – onsemi 1.0 A Low Dropout Positive Fixed 3.3V Voltage Regulator

Quick Answer The NCP1117ST33T3G is a high-performance, low dropout (LDO) positive fixed voltage regulator from onsemi capable of delivering output currents in excess of 1.0A with a fixed 3.3V output. It features a low dropout voltage of 1.2V maximum at 800mA, excellent line and load regulation, and internal protection circuits, making it ideal for industrial, consumer, networking, and post-regulation applications in a compact SOT-223 package.

Current Stock at ICMASS: Strong inventory available for immediate worldwide delivery.

Key Specifications

[Download Official NCP1117 Datasheet PDF]

Why Choose NCP1117ST33T3G?

• High output current capability in excess of 1.0A
• Low dropout voltage of 1.2V maximum at 800mA
• Fixed 3.3V output with tight ±2% accuracy
• Internal thermal shutdown and current limiting protection
• No minimum load requirement for stable regulation
• Compact SOT-223 package for efficient heat dissipation
• Pb-free, RoHS compliant, and cost-effective

Typical Applications

• 3.3V power supplies for microcontrollers and FPGAs
• Industrial control and automation systems
• Networking and telecommunications equipment
• Consumer electronics and set-top boxes
• Post-regulation for switching power supplies
• Battery-powered and portable devices
• Test and measurement instruments
• LED lighting drivers

NCP1117ST33T3G Alternatives & Cross Reference Popular Alternatives:

• NCP1117 series (other voltages: 1.8V, 2.5V, 5.0V, adjustable)
• LM1117-3.3 (similar performance)
• AMS1117-3.3 (lower cost)
• TPS7A series (higher performance LDOs)
• LD1117A-3.3 (ST Microelectronics)

Comparison Table:

Purchasing Information at ICMASS

• Stock Status: Strong inventory available
• MOQ: 100 pieces (samples welcome)
• Lead Time: 1-3 days for stock orders
• Shipping: Fast global delivery (DHL, UPS, FedEx)
• Quality Guarantee: 100% genuine onsemi components

Get Competitive Quote – Contact us for bulk pricing and technical support.

Frequently Asked Questions (FAQ)

Q1: What is the NCP1117ST33T3G mainly used for? A: It is a 3.3V fixed LDO regulator designed for high current (1A+) applications requiring stable voltage with low dropout.

Q2: What is the maximum output current of NCP1117ST33T3G? A: In excess of 1.0A, with excellent performance at 800mA and above.

Q3: What is the dropout voltage? A: Maximum 1.2V at 800mA over temperature.

Q4: What package does the NCP1117ST33T3G use? A: SOT-223 (4-pin) package, ideal for surface mount and good thermal performance.

Q5: What is the input voltage range? A: Up to 20V maximum input voltage.

Q6: Does it require a minimum output capacitor? A: Yes, a 10µF ceramic or tantalum capacitor is recommended for stability.

Q7: Is it suitable for 3.3V microcontroller power supplies? A: Yes, it is widely used for powering MCUs, FPGAs, and other 3.3V digital circuits.

Q8: Do you have real stock of NCP1117ST33T3G? A: Yes, we maintain good inventory levels for fast delivery.

Q9: What protection features does it include? A: Over current limiting, thermal shutdown, and safe operating area compensation.

Q10: Can you provide reference designs or layout recommendations? A: Yes, we supply official onsemi datasheet, reference designs, and application notes.

Q11: Do you offer volume pricing? A: Yes. Competitive tiered pricing is available for quantities from 1K to 100K+.

Q12: How does NCP1117 compare to LM1117? A: Similar performance with higher current capability and onsemi reliability in the same popular SOT-223 package.

Related Products

• NCP1117 series (other fixed voltages and adjustable)
• LM1117 / AMS1117 3.3V LDOs
• Other onsemi Low Dropout Regulators
• Higher performance LDOs (TPS7A, NCV series)