LED7708 STMicroelectronics, LED7708 Datasheet - Page 40

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

Specifications of LED7708

• Rohs: yes

Recommended operating conditions
40/53
Equation 15
Table 21.
Table 22.
Figure 12. Dimming signals and synchronization
GSCK
FOSC
GSSY
DSYS
Pin
0
1
The GSSY pin is set as output and provides a pulse at the end of each dimming cycle.
The device continuously performs a latency+dimming sequence.
The GSSY pin is set as input. The ongoing dimming sequence is reset as soon as a
rising edge on the GSSY input is detected; a new latency+dimming cycle is triggered by
the falling edge on this pin.
Input or output, depending on FOSC pin status;
FOSC high: grayscale clock input, internal oscillator disabled.
FOSC to resistor: grayscale clock output. The clock, internally generated by the dimming
oscillator, is provided at this pin.
Internal oscillator frequency setting. See above.
Input or output pin, depending on DSYS bit value. Used for dimming synchronization.
See
Function of pins involved in dimming control
Dimming synchronization control
Table
21.
Dimming sync selector (locked if DEN is asserted)
Doc ID 022698 Rev 1
f
DIM
=
Function
f
OSC
2
N
LED7708