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TPS61160 Datasheet(PDF) 5 Page - Texas Instruments

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Part No. TPS61160
Description  White LED Driver With Digital and PWM Brightness Control in 2mm x 2mm QFN Package for up to 10 LEDs in Series
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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TPS61160 Datasheet(HTML) 5 Page - Texas Instruments

 
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FUNCTIONAL BLOCK DIAGRAM
SW
Ramp
Generator
Oscillator
Current
Sensor
OLP
CTRL
GND
C3
L1
+
FB
Reference
Control
D1
Error
Amplifer
2
1
Rset
C2
Vin
C1
PWMControl
4
6
Soft
Start-up
5
3
COMP
TYPICAL CHARACTERISTICS
TABLE OF GRAPHS
TPS61160
TPS61161
SLVS791 – NOVEMBER 2007
FIGURE
Efficiency TPS61160/1
VIN = 3.6 V; 4, 6, 8, 10 LEDs; L = 22
µH
Figure 2
Efficiency TPS61160
Figure 3
Efficiency TPS61161
Figure 4
Current limit
TA = 25°C
Figure 5
Current limit
Figure 6
Easyscale step
Figure 7
PWM dimming linearity
VIN = 3.6 V; PWM Freq = 10 kHz and 40 kHz
Figure 7
Output ripple at PWM dimming
8 LEDs; VIN = 3.6 V; ILOAD = 20 mA; PWM Freq = 10 kHz
Figure 9
Switching waveform
8 LEDs; VIN = 3.6 V; ILOAD = 20 mA; L = 22 µH
Figure 10
Start-up
8 LEDs; VIN = 3.6 V; ILOAD = 20 mA; L =22 µH
Figure 11
Open LED protection
8 LEDs; VIN = 3.6 V; ILOAD = 20 mA; L = 22 µH
Figure 12
Copyright © 2007, Texas Instruments Incorporated
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Product Folder Link(s): TPS61160 TPS61161


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