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IC / 51716 / TPS51716 / QFN-20

تولید کننده: Texas Instruments
مدل کالا: TPS51716
موجودی:
تماس 8893- 6186
قیمت: 0تومان

51716 - TPS51716 - Texas Instruments - QFN-20

کنترلر مدار رم

Complete DDR2, DDR3, DDR3L, and LPDDR3 Memory Power Solution Synchronous Buck Controller, 2-A LDO, with Buffered Reference

 

DESCRIPTION

The TPS51716 provides a complete power supply for DDR2, DDR3, DDR3L, and LPDDR3 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 TPS51716 employs D-CAP2™ mode coupled with 500 kHz or 670 kHz operating frequencies that supports ceramic output capacitors without an external compensation circuit. The VTTREF tracks VDDQ/2 with excellent 0.8% accuracy. The VTT, which provides 2-A sink/source peak current capabilities, requires only 10-μF of ceramic capacitance. In addition, the device features a dedicated LDO supply input.

The TPS51716 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. It includes programmable OCL with low-side MOSFET RDS(on) sensing, OVP/UVP/UVLO and thermal shutdown protections.

TI offers the TPS51716 in a 20-pin, 3 mm × 3 mm, QFN package and specifies it for an ambient temperature range between –40°C and 85°C.

 

FEATURES

•  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-CAP2™ Mode for Ceramic Output Capacitors

– Selectable 500 kHz/670 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/LPDDR3 Memory Power Supplies

• SSTL_18, SSTL_15, SSTL_135 and HSTL Termination

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