The TPS51200-Q1 device is a sink and source double-data-rate (DDR) termination regulator specifically designed for low input voltage, low-cost, low-noise systems where space is a key consideration.
The TPS51200-Q1 device maintains a fast transient response and only requires a minimum output capacitance of 20 μF. The TPS51200-Q1 device supports a remote sensing function and all power requirements for DDR, DDR2, DDR3, DDR3L, Low Power DDR3 and DDR4 VTT bus termination.
In addition, the TPS51200-Q1 device provides an open-drain PGOOD signal to monitor the output regulation and an EN signal that can be used to discharge VTT during S3 (suspend to RAM) for DDR applications.
The TPS51200-Q1 device is available in the thermally-efficient VSON-10 package, and is rated both green and Pb-free. The device is specified from –40°C to 125°C.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
TPS51200-Q1 | VSON (10) | 3.00 mm × 3.00 mm |
Changes from B Revision (September 2015) to C Revision
Changes from A Revision (April 2012) to B Revision
Changes from * Revision (November 2009) to A Revision
PIN | I/O | DESCRIPTION | |
---|---|---|---|
NAME | NO. | ||
EN | 7 | I | For DDR VTT application, connect EN to SLP_S3. For any other applications, use EN as the ON/OFF function. Keep EN voltage equal or lower than VIN voltage at all times. |
GND | 8 | — | Ground. Signal ground. Connect to negative pin of the output capacitor. |
PGND(1) | 4 | — | Power ground output for the LDO |
PGOOD | 9 | O | PGOOD output. Open drain pin. Indicates regulation. |
REFIN | 1 | I | Reference input |
REFOUT | 6 | O | Reference output. Connect to GND through 0.1-μF ceramic capacitor. If there is REFOUT capacitor at DDR side, keep the total capacitance on REFOUT pin below 1 μF. The REFOUT pin can not be open. |
VIN | 10 | I | 2.5-V or 3.3-V power supply A ceramic decoupling capacitor with a value between 1-μF and 4.7-μF is required. |
VLDOIN | 2 | I | Supply voltage for the LDO |
VO | 3 | O | Power output for the LDO. Minimum 20-μF capacitance is required. No maximum capacitance limit. |
VOSNS | 5 | I | Voltage sense output for the LDO. Connect to positive pin of the output capacitor or the load. |