CM3131

CM3131 Triple Linear Voltage Regulator for DDR-I/-II Memory Features Integrated power solution for DDR-I and DDR-II memory systems with few external components Three all-linear regulators for VDDQ, VTT and VSTBY power supply applications Lowest system cost and smallest footprint for DDR power solutions VDDQ regulator/driver utilizes external N-FET to www.DataSheet4U.com provide up to 15A current at 2.5V/1.8V VTT source/sink regulator provides up to 2A at 1.25V for DDR-I systems or 0.65A at 0.9V for the DDR-II memory controller (not DDR-II memory) LDO standby regulator provides up to 500mA at 2.5V for DDR-I and at 1.8V for DDR-II systems Can be ganged for higher current applications Over temperature and reverse current protection Over current protection for VSTBY and VTT regulator Available in 8 lead and 14 lead PSOP packages Lead-free versions available Product Description The CM3131 family of all-linear regulators provides an integrated power solution for DDR-I/-II memory systems in both run-time and standby modes of operation. The CM3131 is ideal for designs incorporating both a main 3.3V and a standby (3.3V or 5V) supply. The CM3131 features three independent linear regulators for VDDQ, VTT and VSTBY supply regulation and will maintain an accuracy of ±1% across the operating temperature range. The CM3131 is offered in two configurations. The CM3131-01/11 drives a single external N-FET on a single VDDQ rail. The CM3131-02 drives two external unmatched...