Overview
The TPS51200 device, produced by Texas Instruments, is a sink and source double data rate (DDR) termination regulator. It is specifically designed for low input voltage, low-cost, and low-noise systems where space is a critical consideration. This regulator maintains a fast transient response and requires a minimum output capacitance of only 20 µF, making it highly efficient for memory termination applications such as DDR, DDR2, DDR3, DDR3L, Low-Power DDR3, and DDR4 VTT bus termination.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 10-Pin VSON with Thermal Pad |
| Operating Temperature Range | -40°C to 85°C |
| Input Voltage | Supports 2.5-V and 3.3-V Rails |
| VLDOIN Voltage Range | 1.1 V to 3.5 V |
| Minimum Output Capacitance | 20 µF (Typically 3 × 10-µF MLCCs) |
| PGOOD Signal | Open-drain to monitor output regulation |
| EN Input | For discharging VTT during S3 (suspend to RAM) |
| REFIN Input | Allows flexible input tracking either directly or through resistor divider |
| Remote Sensing | VOSNS |
| Buffered Reference (REFOUT) | ±10-mA |
| Additional Features | Built-in Soft Start, UVLO, OCL, and Thermal Shutdown |
Key Features
- Sink and source termination regulator with droop compensation
- Supports DDR, DDR2, DDR3, DDR3L, Low-Power DDR3, and DDR4 VTT applications
- Remote sensing (VOSNS) for accurate voltage regulation
- ±10-mA buffered reference (REFOUT)
- Built-in soft start, undervoltage lockout (UVLO), overcurrent limit (OCL), and thermal shutdown
- PGOOD signal to monitor output regulation
- EN input for discharging VTT during S3 (suspend to RAM)
- REFIN input for flexible input tracking
- Thermally efficient 10-pin VSON package with thermal pad
Applications
- Memory termination regulator for DDR, DDR2, DDR3, DDR3L, Low-Power DDR3, and DDR4
- Notebooks, desktops, and servers
- Telecom and datacom equipment
- Base stations
- LCD-TVs and PDP-TVs
- Copiers and printers
- Set-top boxes
Q & A
- What is the primary function of the TPS51200 device?
The TPS51200 is a sink and source double data rate (DDR) termination regulator designed for low input voltage, low-cost, and low-noise systems.
- What are the supported DDR types for the TPS51200?
The TPS51200 supports DDR, DDR2, DDR3, DDR3L, Low-Power DDR3, and DDR4 VTT applications.
- What is the minimum output capacitance required for the TPS51200?
The minimum output capacitance required is 20 µF, typically achieved with 3 × 10-µF MLCCs.
- What is the purpose of the PGOOD signal in the TPS51200?
The PGOOD signal is an open-drain output used to monitor the output regulation of the device.
- What is the function of the EN input in the TPS51200?
The EN input can be used to discharge VTT during S3 (suspend to RAM) for DDR applications.
- Does the TPS51200 support remote sensing?
Yes, the TPS51200 supports remote sensing (VOSNS) for accurate voltage regulation.
- What is the buffered reference output of the TPS51200?
The TPS51200 provides a ±10-mA buffered reference (REFOUT).
- What are the built-in protection features of the TPS51200?
The TPS51200 includes built-in soft start, undervoltage lockout (UVLO), overcurrent limit (OCL), and thermal shutdown.
- What is the package type and thermal rating of the TPS51200?
The TPS51200 is available in a thermally efficient 10-pin VSON package with a thermal pad and is rated from –40°C to +85°C.
- Is the TPS51200 environmentally friendly?
Yes, the TPS51200 is both Green and Pb-free.
