| DDR memory type | DDR, DDR2, DDR3, DDR3L, DDR4, LPDDR2, LPDDR3 |
| Control mode | D-CAP, S4/S5 |
| Iout VDDQ (Max) (A) | 20 |
| Iout VTT (Max) (A) | 2 |
| Iq (Typ) (mA) | 0.6 |
| Output | VDDQ, VREF, VTT |
| Vin (Min) (V) | 3 |
| Vin (Max) (V) | 28 |
| Features | Complete Solution, Eco Mode, S3/S5 Support |
| Rating | Catalog |
- Synchronous Buck Controller (VDDQ)
- Conversion Voltage Range: 3 V to 28 V
- Output Voltage Range: 0.7 V to 1.8 V
- 0.8% VREF Accuracy
- D-CAP? Mode for Fast Transient Response
- Selectable 300 kHz/400 kHz Switching Frequencies
- Optimized Efficiency at Light and Heavy Loads with Auto-skip Function
- Supports Soft-Off in S4/S5 States
- OCL/OVP/UVP/UVLO Protections
- Powergood Output
- 2-A LDO(VTT), Buffered Reference(VTTREF)
- 2-A (Peak) Sink and Source Current
- Requires Only 10-μF of Ceramic Output Capacitance
- Buffered, Low Noise, 10-mA VTTREF Output
- 0.8% VTTREF, 20-mV VTT Accuracy
- Support High-Z in S3 and Soft-Off in S4/S5
- Thermal Shutdown
- 20-Pin, 3 mm × 3 mm, QFN Package
- APPLICATIONS
- DDR2/DDR3/DDR3L Memory Power Supplies
- SSTL_18, SSTL_15, SSTL_135 and HSTL Termination
The TPS51216 provides a complete power supply for DDR2, DDR3 and DDR3L memory systems in the lowest total cost and minimum space. It integrates a synchronous buck regulator controller (VDDQ) with a 2-A sink/source tracking LDO (VTT) and buffered low noise reference (VTTREF). The TPS51216 employs D-CAP? mode coupled with 300 kHz/400 kHz frequencies for ease-of-use and fast transient response. The VTTREF tracks VDDQ/2 within excellent 0.8% accuracy. The VTT, which provides 2-A sink/source peak current capabilities, requires only 10-μF of ceramic capacitance. In addition, a dedicated LDO supply input is available.
The TPS51216 provides rich useful functions as well as excellent power supply performance. It supports flexible power state control, placing VTT at high-Z in S3 and discharging VDDQ, VTT and VTTREF (soft-off) in S4/S5 state. Programmable OCL with low-side MOSFET RDS(on) sensing, OVP/UVP/UVLO and thermal shutdown protections are also available.
The TPS51216 is available in a 20-pin, 3 mm × 3 mm, QFN package and is specified for ambient temperature from –40°C to 85°C.
