S1F76680 Epson Electronics America, Inc., S1F76680 Datasheet - Page 15

• Manufacturer Part Number: S1F76680
• Description: Led Driver
• Manufacturer: Epson Electronics America, Inc.

[4] LED lighting sequence
S1F76680 Technical Manual (Rev.1.22)
* You can cut the lighting delay time short during the automatic luminescence control mode by combining
Delay between the startup and LED lighting varies as shown below depending on the operating state.
two operations as shown above and then lighting LED with the fixed current.
Switching from the fixed current to the automatic luminescence control must be done after making sure
that the time of TLEDON4>TLEDON1+TELDON3 and TLEDON4>TLEDON2 have elapsed.
In the case of LED lighting
In the case of LED lighting
When lighting LED automatically after startup, a delay of TLEDON2 occurs until LED is lighted.
EN1
EN3/NLED
EN3/(SEN2)
ILED (LED current)
EN1
EN3/NLED
ILED (LED current)
EN1
EN2(SEN2)
ILED (LED current)
TLEDON1
TLEDON1
1
2
(Max. current) and LED lighting
(Automatic luminescence control)
TLEDON3
7. OPERATIONAL AND FUNCTIONAL DESCRIPTION
TLEDON3
TLEDON2
TLEDON4
TLEDON2
Fixed current
EPSON
Automatic luminescence current
3
(fixed current set from the register)
11