LP3982S-28QVF

The LP3982S family are high performance low dropout (LDO) voltage regulators with high PSRR, fast transient response, high accuracy, and low output noise. The devices with advanced CMOS process are suitable for many applications that require regulated supplies of up to 300mA load current. The family include standard fixed output voltages of 1.2V, 1.5V, 1.8V, 2.5V, 2.8V, 3.0V, and 3.3V. The devices are stable with a 1.0μF~10μF ceramic output capacitor. The devices are protected from short circuit by a current limit function and from over-heating by a thermal overload protection. The devices are available in standard DFN-4 (1mmx1mm) and SOT23-5 packages. The LP3982S family are high performance, low dropout linear regulators with fixed 1.2V, 1.8V, 2.8V, and 3.3V output voltages. The family with low output noise and high PSRR are suited for high performance applications. Optimized for using with ceramic capacitors, the device provides excellent transient performance.

Applications

• Digital cameras
• Audio devices
• Portable and battery-powered equipment
• Post dc-to-dc regulation
• Post regulation
• Wireless handsets

Key features

• Wide Input Voltage Range: 2.2V to 5.5V
• Fixed Output Voltage: - 1.2V, 1.5V, 1.8V, 2.5V, 2.8V, 3.0V, 3.3V
• Maximum Load Current: 300mA
• High PSRR at Full Frequency Range: - 75dB@1kHz - 60dB@10kHz - 50dB@100kHz
• Low Noise: 42μVrms, VOUT = 2.8V
• Low Quiescent Current: 58μA typical
• Low Dropout Voltage: - 66mV @ 100mA Load, VOUT = 2.8V - 200mV @ 300mA Load, VOUT = 2.8V
• Output Voltage Accuracy: ±1% @ 1mA
• Short Circuit Current Limit: 110mA
• Thermal Shutdown Protection
• Excellent Load/Line Transient Response
• Line Regulation: 0.01%/V typical
• Load Regulation: 16mV typical
• Robust ESD capability: - Human Body Model: 4kV - Charged Device Model: 1kV
• Package: SOT23-5, DFN-4
• RoHS Compliant and 100% Lead (Pb)-Free