LED7708 STMicroelectronics, LED7708 Datasheet - Page 15

• Manufacturer Part Number: LED7708
• Description: LED Lighting Drivers 16 Ch 85mA LED 3.6 to 36V 250kHz
• Manufacturer: STMicroelectronics

Specifications of LED7708

• Rohs: yes

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