LTP3112XF4

The LTP31xx series of low - dropout (LDO), low - power linear regulators offer very high power supply rejection ratio (PSRR) while maintaining very low 14 μA ground current, suitable for RF applications. The family uses an advanced CMOS process and a P - MOSFET pass device to achieve fast start - up, very low noise, excellent transient response, and excellent PSRR performance. The LTP31xx is stable with a 1.0 μF ceramic output capacitor, and uses a precision voltage reference and feedback loop to achieve a worst - case accuracy of 2% over all load, line, process, and temperature variations. It is fully specified from TJ = - 40 °C to + 125 °C, and is available in small UTDFN1.0×1.0 - 4L, DFN1.0×1.0 - 4L and 5023 - 5L packages, which is ideal for small form factor portable equipments such as wireless handsets and PDAs.

Applications

• Smart Phones and Cellular Phones
• Modems
• Security and Surveillance
• Hand - Held Instruments
• Battery - Powered Equipments

Key features

• Wide Input Voltage Range: 1.9V to 5.5V
• Up to 300 mA Load Current
• Fixed Output Voltages: 1.2V to 4.5V
• More Output Voltage Options Available on Requested
• Very Low IQ: 14 μA
• Low Dropout: 180 mV Typically at 3.3V
• Very High PSRR: 90dB at 1kHz
• Ultra Low Noise: 10 μVRMS at 3.3V Output and ILOAD = 1mA
• Excellent Load and Line Transient Response
• Line Regulation: 0.02%N Typically
• Short Circuit Protection: 500 mA Typically (Current at Short Mode)
• With Auto Discharge