TJ2997GD datasheet(8/13 Pages) HTC

Part #	TJ2997GD

Description	DDR Termination Regulator

PDF	13 Pages

Scroll/Zoom	100%

Manufacturer	HTC [HTC Korea TAEJIN Technology Co.]

Direct Link	http://www.htckorea.co.kr

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8 / 13 page

DDR Termination Regulator

TJ2997

Apr, 2011 - R1.0.1

8/13

HTC

sinking and sourcing current. Although only one equation will add into the total, V

TT cannot source and

sink current simultaneously.

VTT = VVTT x ILOAD (Sinking)

or P

VTT = ( VPVIN - VVTT) x ILOAD (Sourcing)

The power dissipation of the TJ2997 can also be calculated during the shutdown state. During this

condition the output V

TT will tri-state, therefore that term in the power equation will disappear as it

cannot sink or source any current (leakage is negligible). The only losses during shutdown will be

the reduced quiescent current at AVIN and the constant impedance that is seen at the VDDQ pin.

D = PAVIN + PVDDQ ,

Where, PAVIN = IAVIN x VAVIN

VDDQ

= V

VDDQ

x I

VDDQ

= V

VDDQ2

x R

VDDQ

TJ2997GD Datasheet(PDF) 8 Page - HTC Korea TAEJIN Technology Co.