Datasheet

80
82
84
86
88
90
92
94
96
98
100
0 25 50
75
100
125
150
I -OutputCurrent-mA
O
Efficiency-%
V =11V
bat
V =28.8V
O
V =17.6V
O
V =23.2V
O
80
82
84
86
88
90
92
94
96
98
100
Efficiency-%
0 25 50
75
100
125
150
I -OutputCurrent-mA
O
V =11V
bat
V =31.6V
O
V =36.2V
O
TPS61180/1/2
www.ti.com SLVS801E –DECEMBER 2007–REVISED APRIL 2013
TYPICAL CHARACTERISTICS
Table of Graphs Figure
Load Efficiency TPS61181 V
bat
= 11V; V
O
=28.8V, 23.2V and 17.6V; L=4.7uH Figure 2
Load Efficiency TPS61181 V
bat
= 11V; V
O
=36.2V and 31.6V; L=4.7uH Figure 3
Load Efficiency TPS61181 V
bat
= 11V; V
O
=28.8V; L=4.7uH, L=10uH Figure 4
Load Efficiency TPS61181 V
bat
= 7V, 11V and 19V; V
O
=28.8V; L=4.7uH Figure 5
PWM Dimming Efficiency V
bat
= 7V, 11V and 19V; V
O
=28.8V; I
set
= 20μA; PWM Freq = 200Hz Figure 6
PWM Dimming Efficiency V
bat
= 7V, 11V and 19V; V
O
=36.2V; I
set
= 20μA; PWM Freq = 200Hz Figure 7
Dimming Linearity V
bat
= 11V; V
O
=28.8V; I
set
= 20μA; PWM Freq = 1kHz Figure 8
Dimming Linearity V
bat
= 11V; V
O
=28.8V; I
set
= 20μA; PWM Freq = 200Hz Figure 9
Output Ripple V
O
=28.8V; I
set
= 20μA; PWM Freq = 200Hz; Duty = 50% Figure 10
Switching Waveform V
bat
= 11V; I
set
= 20μA Figure 11
Output Ripple at PWM Dimming V
bat
= 11V; I
set
= 20μA; PWM Freq = 200Hz; Duty = 50%; C
O
=4.7μF Figure 12
Short Circuit Protection V
bat
= 11V; I
set
= 20μA Figure 13
Open WLED Protection V
bat
= 11V; I
set
= 20μA Figure 14
Startup Waveform V
bat
= 11V; I
set
= 20μA Figure 15
EFFICIENCY EFFICIENCY
vs vs
OUTPUT CURRENT OUTPUT CURRENT
Figure 2. Figure 3.
Copyright © 2007–2013, Texas Instruments Incorporated Submit Documentation Feedback 7
Product Folder Links: TPS61180/1/2