S1F87110B0A Epson Electronics America, Inc., S1F87110B0A Datasheet - Page 12

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

7.4 Brightness evaluation function
7.4.1 Connection of a sensor
RPD(Ω) will generate a voltage potential difference of VPD(V)=(IPD1×1/10)×(RPD+0.1kΩ) inside the IC.
S1F87110B0A Series Technical Manual (Rev.1.0)
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The connection method differs depending on the sensor type as shown below.
Suppose the current that the sensor provides to PDIN pin is IPD1. This sensor current IPD1 (A) and external
Based on the VPD value, the S1F87110 determines the brightness level on the scale of 1 to 16.
Photo IC (current output) type sensor
Connect the sensor current output pin to PDIN pin.
Sensor 1
VPD=(IPD1×1/10)×(RPD+0.1kΩ)
CPD
IPD1
RPD
Photo IC type sensor (sensor 1)
7. OPERATIONAL AND FUNCTIONAL DESCRIPTION
RPD1
RPD2
PDIN
EPSON
S1F87110
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