RT9055

® RT9055 300mA Dual LDO Regulator General Description The RT9055 is a dual channel, low noise, and low dropout regulator sourcing up to 300mA at each channel. The output voltage range is from 0.9V to 3.5V with an input voltage range from 1.5V to 5.5V. The RT9055 offers 2% accuracy, extremely low dropout voltage and extremely low quiescent current (only 29μA per LDO). The shutdown current is near zero which is suitable for battery powered applications. The RT9055 also provides protection functions such as current limiting, output short circuit protection, and over temperature protection. The RT9055 allows stable operation with very small ceramic output capacitors, hence minimizing required board space and component cost. The RT9055 is available in a WL-CSP-6B 0.8x1.2 package. Features z z z z z z z z z z z z z z Wide Operating Voltage Range : 1.5V to 5.5V Low Noise for RF Application No Noise Bypass Capacitor Required Fast Response in Line/Load Transient TTL Logic Controlled Shutdown Input Low Temperature Coefficient Dual LDO Outputs (300mA/300mA) Ultra-Low Quiescent Current : 29μA/LDO High Output Accuracy 2% Short Current Protection Thermal Shutdown Protection Current Limit Protection Short Circuit Thermal Folded Back Protection RoHS Compliant and Halogen Free Applications z z z Ordering Information RT9055Package Type WSC : WL-CSP-6B 0.8x1.2 Output Voltage : VOUT1/VOUT2 VOUT2 > VOUT1 is Recommended Note : Richtek products are : ` z Cellular Handsets Battery Powered Equ...