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LED7708 Datasheet(PDF) 16 Page - STMicroelectronics

Part # LED7708
Description  16 channels x 85 mA LED driver with boost controller and 4-wire serial interface
PDF  53 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LED7708 Datasheet(HTML) 16 Page - STMicroelectronics

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Electrical characteristics
LED7708
16/53
Doc ID 022698 Rev 1
Fault management
VCHx,FLT1
LED short-circuit detection
threshold
DTS0=1&
DTS1=0
3.0
3.2
3.4
V
VCHx,FLT2
DTS0=0&
DTS1=1
6.2
6.4
6.6
VCHx,FLT3
DTS0=1&
DTS1=1
7.7
8.0
8.3
XFLT output low level
IXFLT, SINK=4 mA
200
220
mV
Dimming oscillator
KOSC
Internal dimming oscillator
constant
RFOSC=33.2 kΩ
3.86
x1011
4 x1011
4.14
x1011
Hz•
Ω
FGSCK,OSC
Internal dimming oscillator
frequency
RFOSC=100 kΩ
4
MHz
RFOSC=16 kΩ
25
Thermal flag and protection
TOTA
Overtemperature alert
threshold
125
°C
Overtemperature alert
hysteresis
20
TOTP
Overtemperature protection
threshold
155
1.
Channel current accuracy is calculated as:
where X, Y=1..16, X
≠Y.
Table 6.
Electrical characteristics (continued)
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
I
CHX
Δ
max
I
CHX
I
TARGET
–
()
I
TARGET
------------------------------------------------
100
•
=
I
CHY
Δ
max
I
CHX
I
CHY
–
()
I
TARGET
--------------------------------------
100
•
=



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