Datasheet

TPS5103
MULTIPLE MODE SYNCHRONOUS DC/DC CONTROLLER
SLVS240A – SEPTEMBER 1999 – REVISED MAY 2001
29
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
Figure 48
I
O
– Output Current – A
PWM Mode
SKIP Mode
80
75
70
60
0 0.5 1 1.5 2 2.5 3
Efficiency – %
85
90
EFFICIENCY
vs
OUTPUT CURRENT
95
3.5 4
65
1.8-V Output Efficiency
Figure 49
80
75
70
60
0 0.1 0.2 0.3
85
90
95
0.4 0.5
65
I
O
– Output Current – A
PWM Mode
SKIP Mode
Efficiency – %
EFFICIENCY
vs
OUTPUT CURRENT
1.8-V Output Efficiency
Figure 50
1.780
1.775
1.770
51015
– Output Voltage – V
1.785
OUTPUT VOLTAGE
vs
INPUT VOLTAGE
1.790
20 250
V
O
V
I
– Input Voltage – V
1.8-V Line Regulation
Figure 51
1.780
1.770
1.770
1.760
0 0.5 1 1.5 2 2.5 3
1.780
1.790
OUTPUT VOLTAGE
vs
OUTPUT CURRENT
1.790
3.5 4
– Output Voltage – VV
O
I
O
– Output Current – A
1.8-V Output Load Regulation