Part # Brief STEVAL-ISA051V1 PM6670S datasheet

Part Manufacturer: ST Microelectronics

ST Microelectronics

Part Description: Complete DDR2 3 memory power supply controller evaluation board based on the PM6670S

Part Details:

STEVAL-ISA051V1 Complete DDR2/3 memory power supply controller evaluation board based on the PM6670S Data Brief Features 4.5 V to 28 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 Constant on-time loop control No RSENSE current sensing using the RDS(on) of the low-side MOSFETs STEVAL-ISA051V1 Negative current limit Latched OVP, UVP and thermal shutdown The device is fully compliant with system sleep Fixed 3 ms soft-start states S3 and S4/S5, providing LDO output high Selectable pulse-skipping at light load impedance in suspend-to-RAM and tracking discharge of all outputs in suspend-to-disk. Selectable no-audible (33 kHz) pulse-skip mode All ceramic output capacitors application supported Output voltage ripple compensation Description This evaluation board is based on the PM6670S and represents a complete DDR2/3 power supply regulator for portable applications 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 polymeric and ceramic output capacitors. An embedded integrator control loop compensates the DC voltage error due to the output ripple. The 2 Apk sink/source linear regulator provides the memory termination voltage with fast load transient response. February 2008 Rev 1 1/4 For further information contact your local STMicroelectronics sales office. 4 Circuit schematic STEVAL-ISA051V1 1 Circuit schematic Figure 1. Schematic 5 T_1S 10 U D O 1 11 N 1 TP V

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Brief STEVAL-ISA051V1 PM6670S.pdf Datasheet