Productos
The TPS51116RGER from Texas Instruments is a complete DDR/DDR2/DDR3/DDR3L/LPDDR3/DDR4 memory power solution in a 24-pin VQFN package. It integrates a synchronous buck controller for VDDQ, a 3A sink/source LDO for VTT, and a buffered low-noise reference for VTTREF, supporting all DDR sleep state controls.
Especificaciones
| Buck Controller (VDDQ) | Synchronous, D-CAP or current mode |
| VDDQ Output Range | 0.75V to 3.0V (2.5V/1.8V/1.5V/1.35V/1.2V presets) |
| VDDQ Input Range | 3.0V to 28V |
| VDDQ Max Output Current | 10A (external MOSFETs) |
| Switching Frequency | 400kHz fixed |
| LDO (VTT) | 3A sink/source tracking linear regulator |
| VTT Accuracy | +/-20mV (vs VTTREF) |
| VTTREF Output | Buffered, low-noise, 10mA, +/-20mV accuracy |
| VTT Capacitor | Only 20uF ceramic required |
| S3 Support | VTT high-Z (suspend to RAM) |
| S4/S5 Support | VDDQ, VTT, VTTREF soft-off (suspend to disk) |
| VLDOIN | External supply input to reduce LDO power loss |
| Protection | Overvoltage, undervoltage, thermal shutdown |
| Power Good | Yes (PGOOD output) |
| Temperatura de funcionamiento | -40 to +85 C |
| Paquete | VQFN-24 (4.0 x 4.0 mm) |
| Status | Activo |
Características
- Complete DDR memory power: VDDQ + VTT + VTTREF
- Supports DDR through DDR4 standards
- Synchronous buck with D-CAP or current mode
- 3A sink/source VTT LDO with external VLDOIN
- Buffered VTTREF with +/-20mV accuracy
- S3 (high-Z) and S4/S5 (soft-off) sleep state control
- 400kHz fixed frequency, 100ns load step response
- Overvoltage, undervoltage, thermal protection
Aplicaciones
- DDR/DDR2/DDR3/DDR4 memory power supplies
- SSTL-2, SSTL-18, SSTL-15 termination
- Laptop and desktop memory modules
- Embedded computing platforms