TPS51216 - DDR2、DDR3 和 DDR3L 存储器功率解决方案同步降压控制器，2-A LDO，缓冲参考电压

TPS51216是TI德州仪器公司的一款无产品，TPS51216是DDR2、DDR3 和 DDR3L 存储器功率解决方案同步降压控制器，2-A LDO，缓冲参考电压，本站介绍了TPS51216的封装应用图解、特点和优点、功能等，并给出了与TPS51216相关的TI元器件型号供参考。

TPS51216 - DDR2、DDR3 和 DDR3L 存储器功率解决方案同步降压控制器，2-A LDO，缓冲参考电压 - 无 - DDR存储器电源终端 - 德州仪器

产品描述

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.

产品特性

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

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