TPS51716RUKR

TPS51716RUKR.pdf

Features of TPS51716

Synchronous step-down controller (Vddq) 

Conversion voltage range: 3 to 28V

Output voltage range: 0.7 to 1.8 V

0.8% VREF accuracy

D-CAP2TM mode for ceramic output capacitors

Optional 500-kHz/670-kHz switching frequency

Optimize efficiency at light and heavy loads with the auto skip feature

Support soft shutdown in S 4/s 5 state

OCL/OVP/UVP/UVLO protection

Good power output

2-A LDO (VTT) , buffered reference (VTTREF) 

2A (Peak) fill current and pull current

Only 10 μf ceramic output capacitor is required

Buffer, low noise, 10mA VTTREF output

0.8% VTTREF and 20 MV VTT accuracy

Supports high resistance in s 3 and soft shutoff in S 4/s 5

Heat off

20 pin, 3mm × 3mm, WQFN package

Description of TPS51716

The TPS51716 provides complete power to the DDR2, DDR3, DDR3L, LPDDR3, and DDR4 memory systems at minimum total cost and minimum space. It integrates a synchronous step-down regulator controller (Vddq) with a 2A feed/pull current tracking LDO (VTT) and buffered low noise reference (VTTREF) . TPS51716 adopts D-CAP2 mode, combined with 500khz or 670khz operating frequency, without external compensation circuit can support ceramic output capacitor. VTTREF tracks VDDQ/2 with excellent accuracy of 0.8% . VTT provides 2A fill/pull current peak capability, requiring only 10μf of ceramic capacitance. In addition, the device has a dedicated LDO power input.

TPS51716 provides a wealth of practical features as well as excellent power performance. It supports flexible power state control, places VTT at high resistance in s 3, and discharges Vddq, VTT, and VTTREF (soft-off) in S 4/s 5. It includes programmable OCL with low-side MOSFET RDS (on) sensing, OVP/UVP/UVLO, and thermal shutdown protection.

TI provides TPS51716 in a 20-pin 3 mm × 3 mm WQFN package and specifies it to be suitable for ambient temperature ranges from -40 ° C to 85 ° C.

Application

• DDR2, DDR3, DDR3L, LPDDR3 and DDR4

Memory power supply

• SSTL, SSTL, SSTL, and HSTL

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