STMicroelectronics PM6670AS
PM6670AS 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.| Part No. | PM6670AS |
|---|---|
| Datasheet | PM6670AS Download |
| Manufacturer |  STMicroelectronics |
| Description | Complete DDR2/3 memory power supply controller |
| Buy | Stock & Price |
FEATURES
● Switching section (VDDQ) – 4.5 V to 36 V input voltage range – 0.9 V, ±1% voltage reference – 1.8 V (DDR2) or 1.5 V (DDR3) fixed output voltages – 0.9 V to 2.6 V adjustable output voltage – 1.237 V ±1% reference voltage available – Very fast load transient response using constant-on-time control loop – No RSENSE current sensing using low side MOSFETs' RDS(ON) – Negative current limit – Latched OVP and UVP – Soft-start internally fixed at 3 ms – Selectable pulse skipping at light load – selectable no-audible (33 kHz) pulse skip mode – Ceramic output capacitors supported – Output voltage ripple compensation● VTT LDO and VTTREF – 2 Apk LDO with foldback for VTT – Remote VTT sensing – High-Z VTT output in S3 – Ceramic output capacitors supported – ±15 mA Low noise buffered reference
APPLICATIONS
● DDR2/3 memory supply● Digital TV system
● SSTL18, SSTL15 and HSTL bus termination
DESCRIPTION
The device An embedded integrator control loop compensates the DC voltage error due to the output ripple.
