TPS51220_15 Datasheet, PDF (11/43 Pages) Texas Instruments – Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller

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TPS51220
SLVS785C – OCTOBER 2007 – REVISED JULY 2009
TYPICAL CHARACTERISTICS (continued)
NO LOAD BATTERY CURRENT
vs
INPUT VOLTAGE
NO LOAD BATTERY CURRENT
vs
INPUT VOLTAGE
1.0
1.0
EN = on, EN1 = off, EN2 = on
EN = on, EN1 = on, EN2 = on
0.9
0.9
0.8
0.8
0.7
0.7
0.6
0.6
0.5
0.5
0.4
0.3
0.2
0.1
0.0
5
10
15
20
V_I - VIN Input Voltage - V
Figure 6.
0.4
0.3
0.2
0.1
25
0.0
5
10
15
20
25
V_I - VIN Input Voltage - V
Figure 7.
BATTERY CURRENT
VREF2 OUTPUT VOLTAGE
vs
vs
INPUT VOLTAGE
OUTPUT CURRENT
1.0
2.02
EN = on, EN1 = on, EN2 = off
0.9
VIN = 12V
0.8
2.01
0.7
0.6
0.5
2.00
0.4
0.3
1.99
0.2
0.1
0.0
5
10
15
20
V_I - VIN Input Voltage - V
Figure 8.
1.98
-100
-50
0
50
100
25
I_O(VREF2) - Output Current - μA
Figure 9.
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