Overview
The TPS51200QDRCRQ1 is a sink and source double-data-rate (DDR) termination regulator designed by Texas Instruments. This device is specifically tailored for low-input voltage, low-cost, and low-noise systems where space is a critical factor. It is optimized for providing proper termination voltage and a 10-mA buffered reference voltage for various DDR memory specifications, including DDR, DDR2, DDR3, DDR3L, Low Power DDR3, and DDR4. The regulator integrates a high-performance, low-dropout (LDO) linear regulator capable of both sourcing and sinking current, ensuring a fast transient response with minimal external components.
Key Specifications
| Parameter | Value | Description |
|---|---|---|
| Package | 10-VFDFN Exposed Pad | Thermally efficient package |
| Input Voltage Range | 1.1 V to 3.5 V | Minimum input voltage requirement is 2.375 V |
| Output Capacitance | Minimum 20 μF | Required for stable operation |
| Temperature Range | –40°C to 125°C | Operating temperature range |
| Remote Sensing | VOSNS pin | For tight regulation and minimizing trace resistance effects |
| PGOOD Signal | Open-drain | To monitor output regulation |
| EN Signal | For S3 (suspend to RAM) mode | To discharge VTT during S3 mode for DDR applications |
| Reference Input (REFIN) | 0.5 V to 1.8 V | Flexible input tracking through external voltage divider |
| Reference Output (REFOUT) | ±10-mA buffered reference | For DDR memory termination |
Key Features
- Sink and source tracking termination regulator for DDR, DDR2, DDR3, DDR3L, Low Power DDR3, and DDR4 VTT bus termination.
- High-performance, low-dropout (LDO) linear regulator capable of sourcing and sinking current.
- Fast transient response with minimal output capacitance (20 μF).
- Remote sensing function (VOSNS pin) for tight regulation.
- Open-drain PGOOD signal to monitor output regulation.
- EN signal for discharging VTT during S3 (suspend to RAM) mode.
- Flexible REFIN input through external voltage divider.
- ±10-mA buffered reference output (REFOUT).
- Built-in soft start, undervoltage lockout (UVLO), and overcurrent limit (OCL).
- Thermal shutdown protection.
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 TPS51200QDRCRQ1?
The TPS51200QDRCRQ1 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 memory specifications?
The device supports DDR, DDR2, DDR3, DDR3L, Low Power DDR3, and DDR4 VTT bus termination.
- What is the minimum output capacitance required?
The minimum output capacitance required is 20 μF.
- What is the purpose of the VOSNS pin?
The VOSNS pin is used for remote sensing to achieve tight regulation and minimize the effects of trace resistance.
- What is the function of the PGOOD signal?
The PGOOD signal is an open-drain signal used to monitor the output regulation.
- How does the EN signal function?
The EN signal can be used to discharge VTT during S3 (suspend to RAM) mode for DDR applications.
- What is the range of the REFIN input voltage?
The REFIN input voltage range is from 0.5 V to 1.8 V.
- What is the temperature range for the TPS51200QDRCRQ1?
The operating temperature range is from –40°C to 125°C.
- What are some common applications of the TPS51200QDRCRQ1?
Common applications include notebooks, desktops, servers, telecom and datacom equipment, base stations, LCD-TVs, PDP-TVs, copiers, printers, and set-top boxes.
- What package type is the TPS51200QDRCRQ1 available in?
The device is available in a 10-VFDFN exposed pad package.
