Overview
The TPS51206DSQT is a 2-A peak sink and source DDR termination regulator with a VTTREF buffered reference output, designed by Texas Instruments. This device is specifically tailored for low-input voltage, low-cost, and low-external component count systems where space is a critical factor. It supports DDR2, DDR3, DDR3L, and DDR4 memory power supplies and maintains fast transient response with minimal external components, requiring only a 10-µF ceramic output capacitor. The regulator operates within a temperature range of -40°C to 105°C and is packaged in a 10-pin, 2 mm × 2 mm SON (DSQ) PowerPAD™ package.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | WSON (DSQ) | - |
| Pins | 10 | - |
| Operating Temperature Range | -40 to 105 | °C |
| Supply Input Voltage | 3.3 V or 5 V | V |
| VLDOIN Input Voltage Range | VTT + 0.4 V to 3.5 V | V |
| Output Voltage Range | 0.5 V to 0.9 V | V |
| Peak Sink and Source Current | ±2 A | A |
| Output Capacitor Requirement | 10 µF MLCC | - |
| VTTREF Buffered Reference Accuracy | VDDQ/2 ± 1% | - |
| VTTREF Sink and Source Current | 10 mA | mA |
| Overtemperature Protection | 150°C with 10°C hysteresis | °C |
Key Features
- Supports 3.3-V and 5-V supply rails
- VTT termination regulator with output voltage range of 0.5 V to 0.9 V
- ±2-A peak sink and source current capability
- Requires only a 10-µF MLCC output capacitor
- ±20 mV accuracy for VTT output
- VTTREF buffered reference with VDDQ/2 ± 1% accuracy
- Supports high-Z in S3 state and soft-stop in S4 and S5 states
- Overtemperature protection
- 10-pin, 2 mm × 2 mm SON (DSQ) PowerPAD™ package
Applications
- DDR2, DDR3, DDR3L, and DDR4 memory power supplies
- SSTL_18, SSTL_15, SSTL_135, and HSTL termination
- Telecom and Datacom systems
- GSM base stations
- LCD-TV and PDP-TV
- Copiers and printers
- Set-top boxes
Q & A
- What is the primary function of the TPS51206DSQT?
The TPS51206DSQT is a DDR termination regulator with a VTTREF buffered reference output, designed to regulate the VTT bus for DDR2, DDR3, DDR3L, and DDR4 memory systems.
- What are the supported supply input voltages for the TPS51206DSQT?
The device supports both 3.3-V and 5-V supply rails.
- What is the output voltage range of the TPS51206DSQT?
The output voltage range is from 0.5 V to 0.9 V.
- What is the peak sink and source current capability of the TPS51206DSQT?
The device can handle ±2-A peak sink and source current.
- What type of output capacitor is required for the TPS51206DSQT?
A 10-µF MLCC (Multilayer Ceramic Capacitor) is required for stability.
- Does the TPS51206DSQT have overtemperature protection?
Yes, it has overtemperature protection that shuts down the device at 150°C with a 10°C hysteresis.
- What is the package type and size of the TPS51206DSQT?
The device is packaged in a 10-pin, 2 mm × 2 mm SON (DSQ) PowerPAD™ package.
- What are some common applications for the TPS51206DSQT?
Common applications include DDR memory power supplies, telecom and datacom systems, GSM base stations, LCD-TV and PDP-TV, copiers and printers, and set-top boxes.
- How does the TPS51206DSQT handle different DDR power states?
The device supports all DDR power states, putting VTT to High-Z in S3 state and discharging VTT and VTTREF in S4 or S5 states.
- What is the accuracy of the VTT output voltage?
The VTT output voltage has an accuracy of ±20 mV.
