The ADP3330ART33REEL7 is a high-accuracy, low-dropout (LDO) regulator from Analog Devices (ADI). It's designed to provide a stable 3.3V output from an input voltage source, even when the input voltage is close to the output voltage. The 'REEL7' suffix typically indicates that the component is provided on tape and reel for automated assembly processes.

Applications

• Portable Equipment
• Battery-Powered Systems
• Post Regulation for Switching Supplies
• Microprocessor and DSP Power Supplies
• PCMCIA VCC Regulation

Features

• High Accuracy: ±0.8% over temperature
• Low Dropout Voltage: 140 mV at 300 mA
• Stable with Small Ceramic Output Capacitors
• Low Quiescent Current: 80 μA
• Short Circuit Protection
• Thermal Overload Protection
• Fixed Output Voltage: 3.3V

Benefits

• Extended Battery Life: Due to low quiescent current and efficient regulation.
• Improved System Performance: Precise and stable voltage supply ensures consistent operation of downstream components.
• Reduced Noise: Low output noise minimizes interference in sensitive analog circuits.
• Simplified Design: Stable operation with ceramic capacitors reduces component count and board space.
• Enhanced Reliability: Short circuit and thermal overload protection prevent damage to the regulator and the system.

Additional Details

The ADP3330ART33REEL7 is housed in a small SOT-223 package, suitable for space-constrained applications. Its low dropout voltage (typically 140mV at 300mA) allows it to operate efficiently even when the input voltage is only slightly higher than the output voltage. This feature is especially useful in battery-powered devices where the battery voltage decreases as it discharges. The high accuracy (±0.8% over temperature) ensures a stable and reliable 3.3V supply for critical components such as microprocessors and DSPs. The regulator is designed to be stable with small ceramic output capacitors, reducing the size and cost of the overall power supply solution. The low quiescent current (80 μA) minimizes power consumption, further extending battery life. Integrated short circuit and thermal overload protection features enhance system robustness and prevent damage to the regulator under fault conditions. The tape and reel packaging is ideal for high-volume automated manufacturing.