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TPS92633MPWPR Datasheet(PDF) 21 Page - Texas Instruments

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Part # TPS92633MPWPR
Description  TPS92633 Three-Channel High-Side LED Driver with Thermal Sharing and Off-Board Binning
PDF  48 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS92633MPWPR Datasheet(HTML) 21 Page - Texas Instruments

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IREF
SLS_REF
+
±
COMP
VCC
1:1
1/N
+
±
COMP
1/N
+
±
COMP
1/N
OUT1
OUT2
OUT3
SLS
SLS
SLS
R(IREF)
R(SLS_REF)
Figure 7-9. Single LED Short-Circuit Detection Block Diagram
(OUT)
(SLS _ REF)
(IREF)
(SLS _ REF)
(SLS _ th _ falling)
(IREF)
N
R
V
N
V
R
u
u
u
(6)
where
• V(IREF) = 1.235 V (typical)
• R(IREF) = 12.3 kΩ recommended
• R(SLS_REF) is in kΩ unit
• N(OUT) = 4 (typical)
• N(SLS_REF) = 1 (typical)
The calculated result for V(SLS_th_falling) is 5.34 V when R(IREF) is 12.3 kΩ and R(SLS_REF) is 13.3 kΩ.
Figure 7-10 illustrates the timing for single-LED short-circuit detection, protection, retry and recovery.
EN
PWMx
SUPPLY
IOUTx
VOUTx
FAULT
Single LED
Short
Single LED
Short
Removed
No external
pullup
tt11t
tt12t
tt9t
tt13t
tt9t
tt14t
Figure 7-10. Single LED Short-Circuit Detection and Recovery Timing Diagram
www.ti.com
TPS92633
SLVSFE8 – JUNE 2021
Copyright © 2021 Texas Instruments Incorporated
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Product Folder Links: TPS92633



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