Brand new RT8239 QFN-20
The RT8239A/B/C is a dual step down, Switch Mode Power Supply (SMPS) controller which generates logic supply voltages for battery powered systems. It includes two Pulse Width Modulation (PWM) controllers adjustable from 2V to 5.5V and also two fixed 5V/3.3V linear regulators. One of the controllers (LDO5) provides automatic switch over to the BYP1 input connected to the main SMPS1 output for maximized efficiency. An optional external charge pump can be monitored through SECFB (RT8239B/C). Other features include on board power up sequencing, a power good output, internal softstart, and a soft discharge output that prevents negative voltage during shutdown.
RT8239 8239A 8239B 8239C JC= UP1589
Board Code: DA0ZQMMB6H0 REV: H CPU Code: SR1YV CPU: Intel Mobile Celeron N2940 GPU Code: NUVOTON NPCE985L GPU: GENERIC
Board Code: X541SA CPU Code: SR2KN CPU: Intel Mobile Celeron N3060 GPU: Integrated
Board Code: ZIWB2/ZIWB3/ZIWE1 LA-B091P CPU Code: SR23Y CPU: Intel Core i5-5200U GPU Code: AMD 216-0856050 GPU: ATI Mobility Radeon R5 M230
Board Code: ZPT10 LA-B151P CPU Code: SR1SE CPU: Intel Mobile Pentium N3520 GPU Code: Integrated