The PM6670S is a complete DDR2/3 power supply regulator designed to meet JEDEC specifications. It integrates a constant on-time (COT) buck controller, a 2 Apk sink/source low drop out regulator and a 15 mA low noise buffered reference. The COT architecture assures fast transient response supporting both electrolytic and ceramic output capacitors. An embedded integrator control loop compensates the DC voltage error due to the output capacitors.
The PM6670S is a complete DDR2/3 memory power supply regulator designed to meet JEDEC specifications. It integrates a constant on-time (COT) buck controller, a 2 Apk sink/source low drop out regulator, and a 15 mA low noise buffered reference. The device is fully compliant with system sleep states S3 and S4/S5, providing LDO output high impedance in suspend-to-RAM and tracking discharge of all outputs in suspend-to-disk.
The switching section supports an input voltage range of 4.5 V to 28 V and provides fixed output voltages of 1.8 V (DDR2) or 1.5 V (DDR3), or an adjustable output voltage between 0.9 V and 2.6 V. It features very fast load transient response using constant on-time control loop, negative current limit, and latched over/under voltage protections.
| Input voltage range | 4.5 V to 28 V |
|---|---|
| Fixed output voltages | 1.8 V (DDR2) or 1.5 V (DDR3) |
| Adjustable output voltage | 0.9 V to 2.6 V |
| Reference voltage accuracy | 1.237 V ±1 % |
| Power dissipation | 2.3 W |
| Operating ambient temperature | -40 to 85 °C |
| Package | VFQFPN-24 |
The device provides 1.8 V for DDR2 and 1.5 V for DDR3 fixed output voltages.
The switching section supports an input voltage range from 4.5 V to 28 V.
Yes, it is fully compliant with system sleep states S3 and S4/S5.