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LED7708TR 数据表(PDF) 15 Page - STMicroelectronics

部件名 LED7708TR
功能描述  16 channels x 85 mA LED driver with boost controller and 4-wire serial interface
PDF  53 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

LED7708TR 数据表(HTML) 15 Page - STMicroelectronics

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LED7708
Electrical characteristics
Doc ID 022698 Rev 1
15/53
VDAC,FB
Maximum internal reference
voltage for output regulation
VMIN to GND
1.136
1.161
1.186
V
VMIN to LDO3
0.967
0.992
1.017
RVMIN=220 kΩ
0.847
0.872
0.897
VMIN floating
0.630
0.655
0.680
Minimum internal reference
voltage for output regulation
VMIN to GND
0.836
0.861
0.886
VMIN to LDO3
0.667
0.692
0.717
RVMIN=220 kΩ
0.547
0.572
0.597
VMIN floating
0.330
0.355
0.380
Current generators
ΔI
CHxn
Maximum output current
accuracy with respect to
nominal value(1)
VCHx=0.6 V,
20 mA
≤ ICHx ≤85 mA
±2%
±3%
ΔI
CHxy
Maximum channel-to-
channel output current
mismatch(1)
(all channels active)
VCHx=0.6 V, RISETH=60 kΩ
(ICHx=20 mA)
±2%
VCHx
Minimum master channel
feedback voltage
RISETH=60 kΩ, CRS=0
500
600
mV
RISETH=15 kΩ, CRS=1
700
800
VRW
Regulation window
amplitude
RISETH=60 kΩ, RWAS=0
190
250
310
RISETH=60 kΩ, RWAS=1
400
500
600
ICHx,OFF1
Off-state channels current
VCHx=10 V, RISETL=50 kΩ
70
80
90
µA
ICHx,OFF2
VCHx=10 V, ISETL to LDO3
1
2
VTH,ISETL
ISETL input threshold
ICHx, OFF2
VLDO3-
1
V
KISETH
Output current high-state
constant
20 mA
≤ ICHx ≤85 mA
1164
1200
1236
KISETL
Output current low-state
constant
3.5
4.0
4.5
Serial interface
DIN, DCLK, LE, GSCK,
GSSY low level input
threshold
VSI=LDO3=3.3 V
1.32
V
DIN, DCLK, LE, GSCK,
GSSY high level input
threshold
1.6
DOUT and GSSY output low
level
VSI=LDO3=3.3 V
ILOAD=-200 µA
1.22
DOUT and GSSY output
high level
VSI=LDO3=3.3 V
ILOAD=200 µA
1.75
Table 6.
Electrical characteristics (continued)
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit



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