Datasheet
0 10 20 30 40 50 60 70 80 90 100
DutyCycle-%
5V
3.6V
3V
2x6LEDs
20mA each
0
10
20
30
40
50
60
70
80
90
100
wLED-Efficiency-%
2.8 3.2 3.6 4 4.4 4.8 5.2 5.6 6
V -InputVoltage-V
I
0
10
20
30
40
50
60
70
80
90
100
wLED-Efficiency-%
2x6LEDs
20mA each
25%dutycycle
50%dutycycle
75%dutycycle
100%dutycycle
900
950
1000
1050
1100
1150
1200
0.1 1 10 100
R -k
Iset
W
K
set
V =5V,
V LDO1:3.6V-5V-3.6V,
LOAD=40mA
bat
IN
V LDO1(Offset:1.8V)
OUT
V LDO1(Offset:3V)
IN
TPS65070, TPS65072, TPS65073
TPS650731, TPS650732, TPS650701, TPS650702, TPS650721
www.ti.com
SLVS950G –JULY 2009–REVISED MAY 2013
K
SET
vs
LINE TRANSIENT RESPONSE LDO1 R
ISET
Figure 21. Figure 22.
wLED EFFICIENCY wLED EFFICIENCY
vs vs
Duty Cycle Vin
Figure 23. Figure 24.
Copyright © 2009–2013, Texas Instruments Incorporated Submit Documentation Feedback 23
Product Folder Links: TPS65070 TPS65072 TPS65073 TPS650731 TPS650732 TPS650701 TPS650702
TPS650721