LP3982S-28B5F

The LP3982S series are high-performance low dropout (LDO) voltage regulators featuring high power supply rejection ratio, fast transient response, high accuracy, and low output noise. Built on advanced CMOS process technology, the series is suitable for a wide range of regulated power supply applications requiring load currents up to 300mA. The series offers standard fixed output voltages of 1.2V, 1.5V, 1.8V, 2.5V, 2.8V, 3.0V, and 3.3V. The devices remain stable with ceramic output capacitors in the range of 1.0μF to 10μF. Current limiting provides short-circuit protection, and thermal overload protection prevents overheating. The devices are available in standard DFN-4 (1mm×1mm) and SOT23-5 packages.

Applications

• Digital cameras
• Audio equipment
• Portable and battery-powered devices
• Post DC-DC conversion regulation
• Post-regulation
• Wireless handheld devices

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 across 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: HBM 4kV, CDM 1kV
• Package: SOT23-5, DFN-4
• RoHS compliant and 100% lead-free