Datasheet

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TYPICAL CHARACTERISTICS
Table of Graphs
0
100
200
300
400
500
600
10 20 30 40 50 60 70 80 90
DutyCycle-%
CurrentLimit-mA
V =4.2V
I
V =3.6V
I
V =3V
I
0
200
400
600
800
1000
1200
10 20 30 40 50 60 70 80 90
DutyCycle-%
CurrentLimit-mA
V
I
=4.2V
V =3.6V
I
V =3V
I
TPS61150A
SLVS706 – OCTOBER 2006
FIGURES
Overcurrent Limit VIN = 3.0V, 3.6V, and 4.2V, single and dual output 1,2
WLED efficiency VIN = 3.3V, 3.6V and 4.2V, 3 WLED, WLED voltage = 11V 3
WLED efficiency VIN = 3.3V, 3.6V and 4.2V, 4 WLED, WLED voltage = 15V 4
WLED efficiency VIN = 3.3V, 3.6V and 4.2V, 5 WLED, WLED voltage = 19V 5
WLED efficiency VIN = 3.3V, 3.6V and 4.2V, 6 WLED, WLED voltage = 23V 6
Both on efficiency VIN = 3.3V, 3.6V and 4.2V, 4 WLED on each output 7
K value over current VIN = 3.6V, I
WLED
= 1mA to 25mA 8
PWM dimming linearity Frequency = 20kHz and 30kHz 9
Single output PWM dimming waveform 10
Multiplexed PWM dimming waveform 11
Start up waveform 12
OVERCURRENT LIMIT (SINGLE OUTPUT) OVERCURRENT LIMIT (DUAL OUTPUT)
vs vs
DUTY CYCLE DUTY CYCLE
Figure 1. Figure 2.
6
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