LED7708 STMicroelectronics, LED7708 Datasheet - Page 7

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

Specifications of LED7708

• Rohs: yes

LED7708
2
Table 2.
10
1
2
3
4
5
6
7
8
9
Pin
DOUT
GSCK
GSSY
XVOK
DCLK
XFLT
DIN
IOK
VSI
Pin function
Figure 2.
Pin description
LE
Serial interface (SI) core and digital I/O buffer supply input. Connect to LDO3 or to an
external supply (3 V-5 V). Insert a 100 nF bypass ceramic capacitor between this pin and
SGND. Connect to the host controller’s supply when possible.
Grayscale synchronization output or VSYNC input. When the internal dimming generation
is set, a pulse at the end of each dimming cycle is provided for data stream
synchronization. Also used as dimming synchronization input to lock the dimming cycles
on the vertical sync pulses.
Serial interface data input.
Serial interface data out.
Serial interface data clock.
Serial interface latch enable.
Grayscale clock I/O. When the internal dimming oscillator is used, the grayscale clock is
provided at this pin. The pin becomes the grayscale clock input if the internal dimming
oscillator is disabled (see FOSC pin).
Fault signal, open drain output. The pin goes low when a faulty condition occurs.
Channel current OK handshake I/O. Used for extended output voltage regulation in multi-
device applications. Used by slave devices to request a higher output voltage to the
master. A 100 k pull-up resistor to LD03 is required.
Channel voltage OK I/O (inverted). Used for extended output voltage regulation in multi-
device applications. Used by slave devices to request an output voltage reduction to the
master. A 100 k pull-up resistor to LD03 is required.
Pin connection (through top view)
Doc ID 022698 Rev 1
Function
Pin function
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