S1F87110B0A Epson Electronics America, Inc., S1F87110B0A Datasheet - Page 13

• Manufacturer Part Number: S1F87110B0A
• Description: Led Controller
• Manufacturer: Epson Electronics America, Inc.

7. OPERATIONAL AND FUNCTIONAL DESCRIPTION
voltage potential difference of VPD(V)=IPD2×(RPD+0.1kΩ) inside the IC.
luminance control mode, the potentials are RPD2=1(V) and RPD1=1(V)+VPD.
influence as much as possible.
10
2
Suppose the sensor current is IPD2. This sensor current IPD2 (A) and external RPD (Ω) will generate a
Based on the VPD value, the S1F87110 determines the brightness level on the scale of 1 to 16.
In both the cases
The potential is RPD1=0V in the standby mode.
Please minimize the wiring length between the sensor/sense resistor to the S1F87110, to avoid noise
Photodiode type sensor
Connect PDIN pin to the ground, and connect the sensor between RPD2 and V
VPD=IPD2×(RPD+0.1kΩ)
IPD
CPD
1
2
and
Photodiode type sensor (sensor 2)
Sensor 2
2
, when the S1F87110 is operated in the fixed brightness mode and automatic
RPD
RPD1
RPD2
PDIN
EPSON
S1F87110
S1F87110B0A Series Technical Manual (Rev.1.0)
SS
.