CM3131 Overview
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.
CM3131 Key Features
- Three all-linear regulators for VDDQ, VTT and VSTBY power supply
CM3131 Applications
- Lowest system cost and smallest footprint for DDR power solutions
- VDDQ regulator/driver utilizes external N-FET to .. 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