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TPS51116 Datasheet PDF

Part Series:TPS51116 Series
Description:COMPLETE DDR, DDR2 AND DDR3 MEMORY POWER SOLUTION SYNCHRONOUS BUCK CONTROLLER, 3A LDO, BUFFERED REFERENCE
Document:TPS51116RGET Datasheet PDF (46 Pages)

TPS51116 Datasheet PDF

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TPS51116 - TI Specifications

TYPE
DESCRIPTION
Case/Package
HTSSOP-20
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TPS51116 - TI Function Overview

The TPS51116 provides a complete power supply for DDR/SSTL-2, DDR2/SSTL-18, DDR3/SSTL-15, and LPDDR3 memory systems. It integrates a synchronous buck controller with a 3-A sink/source tracking linear regulator and buffered low noise reference. The TPS51116 offers the lowest total solution cost in systems where space is at a premium. The TPS51116 synchronous controller runs fixed 400-kHz, pseudo-constant frequency PWM with an adaptive on-time control that can be configured in D-CAP Mode for ease of use and fastest transient response or in current mode to support ceramic output capacitors. The 3-A sink/source LDO maintains fast transient response only requiring 20-μF (2 × 10 μF) of ceramic output capacitance. In addition, the LDO supply input is available externally to significantly reduce the total power losses. The TPS51116 supports all of the sleep state controls placing VTT at high-Z in S3 (suspend to RAM) and discharging VDDQ, VTT and VTTREF (soft-off) in S4/S5 (suspend to disk). TPS51116 has all of the protection features including thermal shutdown and is offered in both a 20-pin HTSSOP PowerPAD package and 24-pin 4×4 QFN.
Synchronous Buck Controller (VDDQ)
Wide-Input Voltage Range: 3.0-V to 28-V
D−CAP™ Mode with 100-ns Load Step Response
Current Mode Option Supports Ceramic Output Capacitors
Supports Soft-Off in S4/S5 States
Current Sensing from RDS(on) or Resistor
2.5-V (DDR), 1.8-V (DDR2), Adjustable to
1.5-V (DDR3) or 1.2-V (LPDDR3) or
Output Range 0.75-V to 3.0-V
Equipped with Powergood, Overvoltage Protection and Undervoltage Protection
3-A LDO (VTT), Buffered Reference (VREF)
Capable to Sink and Source 3 A
LDO Input Available to Optimize Power Losses
Requires only 20-μF Ceramic Output Capacitor
Buffered Low Noise 10-mA VREF Output
Accuracy ±20 mV for both VREF and VTT
Supports High-Z in S3 and Soft-Off in S4/S5
Thermal Shutdown
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