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TPS61177A Datasheet(PDF) 10 Page - Texas Instruments

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Part # TPS61177A
Description  WLED Driver for Notebooks
Download  40 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPS61177A Datasheet(HTML) 10 Page - Texas Instruments

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VLED Voltage 100mV/div
PWMB Voltage 3V/div
I
Current 50mA/div
OUT
Time (5 ms/div)
CS1 Voltage 4V/div
VLED Voltage 100mV/div
PWMB Voltage 3V/div
I
Current 50mA/div
OUT
Time (50 µs/div)
CS1 Voltage 4V/div
VLED Voltage 100mV/div
PWMB Voltage 3V/div
CS Current 50mA/div
Time (5 ms/div)
CS1 Voltage 1V/div
VLED Voltage 100mV/div
LXB Voltage 10V/div
Inductor Current 300mA/div
Time (1µs/div)
VLED Voltage 100mV/div
LXB Voltage 10V/div
Inductor Current 300mA/div
Time (1µs/div)
0
20
40
60
80
100
120
0
20
40
60
80
100
PWM Duty Cycle (%)
200 Hz
20 kHz
C009
10
TPS61177A
SNVSA76A – MARCH 2015 – REVISED MARCH 2016
www.ti.com
Product Folder Links: TPS61177A
Submit Documentation Feedback
Copyright © 2015–2016, Texas Instruments Incorporated
Figure 9. Dimming Linearity in Analog Mode
Figure 10. Switch Waveform
Figure 11. Switch Waveform
FDIM = 200 Hz
Duty = 50%
Figure 12. Mixed-Mode PWM Dimming
FDIM = 200 Hz
Duty = 12.5%
Figure 13. Mixed-Mode PWM Dimming
FDIM = 20 kHz
Duty = 12.5%
Figure 14. Mixed-Mode PWM Dimming


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