Datasheet

6 Performance Data and Typical Characteristic Curves
–3
0.70
31–1
I
VTT
– Output Current – A
V
VTT
– Output Voltage – V
0.71
0.72
0.73
0.74
0.75
0.76
0.77
0.78
0.79
V
IN
(V)
3.3
2.5
20–2
–15
0.752
155–5
I
VTTREF
– Output Current – mA
0.753
0.754
0.755
0.756
0.757
0.758
V
VTTREF
– Output Voltage – V
100–10
V
IN
= 2.5 V
and
V
IN
= 3.3 V
Performance Data and Typical Characteristic Curves www.ti.com
OUTPUT VOLTAGE OUTPUT VOLTAGE
vs vs
OUTPUT CURRENT OUTPUT CURRENT
Figure 5. DDR3 VTT Sink/Source Load Figure 6. DDR3 VTTREF Sink/Source Load
Regulation Regulation
A Test Condition: VTT Source 1 A, Set Enable A Test Condition: VTT Source 1 A, Set Enable
Switch S1 to the ON position Test Points: Switch S1 to the OFF position Test Points:
CH1: Enable TP9 (+) and TP12 (–), CH2: CH1: Enable TP9 (+) and TP12 (–), CH2:
PGOOD TP8 (+) and TP12 (–), CH3: VTT PGOOD TP8 (+) and TP12 (–) CH3: VTT
TP7 (+) and TP6 (–),CH4: VOSNS TPS11 TP7 (+) and TP6 (–), CH4: VOSNS TPS11
(+) and TP14 (–) (+) and TP14 (–)
Figure 7. VTT Source 1 A, Enable Start Up Figure 8. VTT Source 1 A, Enable Shutdown
14 Using theTPS51200 EVM Sink/Source DDR Termination Regulator SLUU323 – JUNE 2008
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