Description

The LP3993-33X3F is an electronic component from the IC Chips category. It is designed for portable RF and wireless applications with demanding performance and space requirements. The LP3993-33X3F delivers ultra low noise and low quiescent current, making it ideal for battery-powered systems. With a noise bypass pin for further noise reduction, the LP3993-33X3F also works with low-ESR ceramic capacitors, saving board space in hand-held wireless devices. It consumes less than 0.01µA in shutdown mode and has a fast turn-on time of less than 50µs. The LP3993-33X3F has features like ultra low dropout voltage, high output accuracy, current limiting protection, and high ripple rejection ratio. It is available in the 5-lead SC-70 packages.

Specifications and features

• Ultra-Low-Noise for RF Application
• 2V-6V Input Voltage Range
• Low Dropout: 220mV @ 300mA
• Fixed Output Voltages: 1.2V, 1.5V, 1.8V, 2.5V, 2.8V, 3.0V, and 3.3V
• 300mA Output Current, 550A Peak Current
• High Power Supply Rejection Ratio (PSSR): -80dB at 1kHz
• Standby Current When Shutdown: < 0.01uA
• Available in SC-70-5 Package
• TTL-Logic-Controlled Shutdown Input
• Ultra-Fast Response in Line/Load Transient
• Current Limiting and Thermal Shutdown Protection
• Quick Start-Up Time: Typically 50uS

Application Scenarios

• Portable Media Players/MP3 players
• Cellular and Smart Mobile Phones
• LCD (Liquid Crystal Display)
• DSC (Digital Still Camera) Sensor
• Wireless Card

Comparison

• Ultra low noise and low quiescent current
• Noise bypass pin for further reduction of output noise
• Works with low-ESR ceramic capacitors, saving board space
• Consumes less than 0.01µA in shutdown mode
• Fast turn-on time of less than 50µs
• Ultra low dropout voltage
• High output accuracy
• Current limiting protection
• High ripple rejection ratio

• No significant disadvantages found