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TPS61185 Datasheet(PDF) 6 Page - Texas Instruments

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Part # TPS61185
Description  WLED Driver for Notebooks with PWM Control Interface
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS61185 Datasheet(HTML) 6 Page - Texas Instruments

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-OutputCurrent-mA
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V =24V
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V
=31V
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V =10.8V
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V =7V
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TPS61185
SLVSAA1A – APRIL 2010 – REVISED MAY 2010
www.ti.com
TYPICAL CHARACTERISTICS
TABLE OF GRAPHS
FIGURES
Load efficiency of TPS61185
VIN = 10.8 V; VO = 29 V, 31 V, 33 V and 36 V; L = 10 µH
Figure 1
Load efficiency of TPS61185
VIN = 7 V, 10.8 V and 24 V; VO = 31 V; L = 10 µH
Figure 2
PWM dimming efficiency
VIN = 7 V, 10.8 V and 24 V; VO = 36 V; L = 10 µH; RISET = 62 kΩ
Figure 3
PWM dimming efficiency
VIN = 7 V, 10.8 V and 24 V; VO = 30 V; L = 10 µH; RISET = 62 kΩ
Figure 4
Dimming linearity
VIN = 10.8 V; VO = 36 V; FPWMO = 210 Hz; RISET = 62 kΩ; MODE = OPEN
Figure 5
Dimming linearity
VIN = 10.8 V; VO = 36 V; FPWMO = 1 kHz; RISET = 62 kΩ; MODE = OPEN
Figure 6
Dimming linearity
VIN = 10.8 V; VO = 36 V; FPWMO = 210 Hz; RISET = 62 kΩ; MODE = GND
Figure 7
Dimming linearity
VIN = 10.8 V; VO = 36 V; FPWMO = 20 kHz; RISET = 62 kΩ; MODE = GND
Figure 8
Boost switching frequency
VIN = 10.8 V; VO = 36 V; RISET = 62 kΩ; MODE = OPEN
Figure 9
Programmable PWM dimming frequency
VIN = 10.8 V; VO = 36 V; RISET = 62 kΩ; MODE = OPEN
Figure 10
Switching waveform
VIN = 5 V; VO = 36 V; L = 10 µH; RISET = 62 kΩ
Figure 11
Switching waveform
VIN = 21 V; VO = 36 V; L = 10 µH; RISET = 62kΩ
Figure 12
Startup waveform
VIN = 10.8 V; VO = 36 V; RISET = 62 kΩ
Figure 13
Shutdown waveform
VIN = 10.8 V; VO = 36 V; RISET = 62kΩ
Figure 13
PWM dimming
VIN = 10.8 V; VO = 36 V; ISET = 20 µA; FPWMO = 210 Hz; D = 1%
Figure 15
PWM dimming
VIN = 10.8 V; VO = 36 V; ISET = 20 µA; FPWMO = 20 kHz; D = 10%
Figure 16
Figure 1. Efficiency vs. Output Current
Figure 2. Efficiency vs. Output Current
6
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