LED7708 STMicroelectronics, LED7708 Datasheet - Page 36

• 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
8.5.8
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Table 16.
GSLAT register
The latency is used to insert a programmable delay at the beginning of each dimming period
to implement a certain amount of scanning. The scanning technique is basically a way to
improve the dynamic performance of an LCD panel by powering the backlight only when the
pixels are stable.
The GSLAT register is a write-only register and stores the 16 less significant bits of the
dimming period latency. The additional two most significant bits are located in the
DEVCFG1 register (LAT16 and LAT17 bits). Thanks to the 18-bit wide latency, the LED7708
is capable of supporting down to 20% of scanning waveform (see
options
DTS1
0
0
1
1
Warning:
for details).
Available LED short detection thresholds
DTS0
0
1
0
1
In order to prevent damage to the device or to the external
circuitry, these bits are locked when the DEN bit of DEVCFG0
is asserted.
Doc ID 022698 Rev 1
LED short detection threshold fixed to 3.4 V
LED short detection threshold fixed to 6.8 V
LED short detection threshold fixed to 8.4 V
LED short-circuit detection threshold
LED short detection disabled
Section 8.6: Dimming
LED7708