The PM8908 is a high efficiency monolithic step down switching regulator designed mainly for the DDR termination. The IC operates from 1 V to 3.5 V input voltage (VIN). The device uses a COT control loop that provides very good performances in terms of load and line transients. The current sense is internally thermally compensated for optimum precision. The output voltage is adjusted from 0.5 V to 2 V with ± 1% accuracy over temperature variations. The PM8908 also provides external tracking support. The PM8908 provides positive and negative over current protection as well as over/under voltage and over temperature protection. PGOOD output easily provides real time information on the output voltage. The PM8908 is available in a QFN20 3.5 x 4.0 mm package.
Integrated MOSFETs for high efficiency
Current COT architecture
1 V to 3.5 V input voltage (VIN)
5.0 V supply voltage (VCC)
Constant frequency mode
1% output voltage accuracy
Two programmable switching frequencies (0.6 MHz or 1 MHz)