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LM3550SPX/NOPB Datasheet(PDF) 27 Page - Texas Instruments

Part # LM3550SPX/NOPB
Description  LM3550 5-A Super-Capacitor Flash LED Driver
PDF  43 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

LM3550SPX/NOPB Datasheet(HTML) 27 Page - Texas Instruments

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background image
1
bit7
1
bit6
SL5
bit5
SL4
bit4
SL3
bit3
SL2
bit2
SL1
bit1
SL0
bit0
MSB
LSB
ALD/TEMP Sense Low Register
Register Address: 0xD0
1
bit7
1
bit6
SH5
bit5
SH4
bit4
SH3
bit3
SH2
bit2
SH1
bit1
SH0
bit0
MSB
LSB
ALD/TEMP Sense High Register
Register Address: 0xC0
27
LM3550
www.ti.com
SNVS569C – MAY 2009 – REVISED OCTOBER 2016
Product Folder Links: LM3550
Submit Documentation Feedback
Copyright © 2009–2016, Texas Instruments Incorporated
Table 8. Time-out Duration Table (continued)
FD3
FD2
FD1
FD0
Time (msec)
1
0
0
1
160
1
0
1
0
176
1
0
1
1
192
1
1
0
0
208
1
1
0
1
224
1
1
1
0
240
1
1
1
1
512
Table 9. Overhead Charge Voltage Table
OH2
OH1
OH0
Level
0
0
0
300 mV
0
0
1
400 mV
0
1
0
500 mV
0
1
1
600 mV
1
0
0
700 mV
1
0
1
800 mV
1
1
0
900 mV
1
1
1
1V
7.6.1.4 ALD/TEMP Sense High/Low Registers
Figure 47. ALD/TEMP Sense High Register
Figure 48. ALD/TEMP Sense Low Register
For ALD/TEMP Sense High and ALD/TEMP sense low, the trip levels are set by Equation 10:
Sense High/Low = 1 V × N / (2
6 − 1)
where
•
N is the decimal equivalent of the value stored in the ALD/TEMP Sense High/Low registers
(10)
NSENSEHIGH must be greater than NSENSELOW.



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