Microchip Technology

The MIC5317 is a high performance 150mA low dropout regulator offering high power supply rejection (PSRR) in an ultra-small 1mm x 1mm package for stringent space requirements and demanding performance. The MIC5317 operates from an input voltage from 2.5V to 6.0V and is capable of providing the output voltages of 1.0V to 3.6V making it ideal for USB port or 6V AC adaptor applications. The MIC5317 offers 2% initial accuracy, low dropout voltage (155mV @ 150mA), and low ground current (typically 29µA). The MIC5317 can also be put into a zero-off-mode current state, drawing virtually no current when disabled. The MIC5317 is available in several advanced packages including a lead-free (RoHS-compliant) 1mm x 1mm Thin DFN occupying only 1mm2 of PCB area, a 75% reduction in board area compared to SC-70 and 2mm x 2mm DFN packages. It is also available in a SOT23-5 and TSOT23-5 package. The MIC5317 has an operating junction temperature range of -40°C to 125°C.

The MIC5322 is a tiny Dual Ultra Low-Dropout (ULDO) linear regulator ideally suited for those applications that require high Power Supply Rejection Ratio (PSRR). It provides a bypass pin to increase PSRR for noise sensitive portable electronics. The MIC5322 is a µCap design which enables operation with very small ceramic output capacitors for stability, thereby reducing required board space and component cost. The combination of extremely low-dropout voltage, very high power supply rejection, very low output noise and exceptional thermal package characteristics makes it ideal for powering RF applications, cellular phones, GPS, imaging sensors for digital still cameras, PDAs, MP3 players, and other portable applications. The MIC5322 ULDO is available in fixed-output voltages in SOT-23, and TSOP.

The MIC5323 is a high-performance, 300mA LDO regulator, offering extremely high PSRR and very low noise while consuming low ground current. Ideal for battery operated applications, the MIC5323 features 2% accuracy, extremely low dropout voltage (120mV at 300mA), and low ground current at light load (typically 90µA). When disabled, the MIC5323 typically consumes less than 1µA. The MIC5323 is a µCap design operating with small ceramic output capacitors for stability, thereby reducing required board space and component cost. The MIC5323 is available in fixed output voltages and thin SOT-23-5 package. Additional voltage options are available.

The MIC5325 is a high performance, µCap low dropout regulator, offering ultra-low operating current while maintaining very fast transient response. The MIC5325 can source up to 400mA of output current and allows a low input supply voltage source to increase system efficiency. Ideal for battery-operated applications; the MIC5325 offers high accuracy, extremely low dropout voltage, and low ground current at all load conditions. The MIC5325 can also be put into a zero off-mode current state, drawing virtually no current when disabled.