S1F76680 Epson Electronics America, Inc., S1F76680 Datasheet - Page 10

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

6. PIN DESCRIPTION
6
(3) Input pin
(4) Pin for charge pump circuit
(5) Automatic luminance control and LED
(6) Miscellaneous
Pin Name
Pin Name
Pin Name
Pin Name
PDOUT
RESET
SAMPL
AOUT
CLED
LED1
LED2
LED3
LED4
V
(test)
(test)
(test)
(test)
(test)
V
SDA
SCL
C1N
C1P
C2N
C2P
PD
OUT
REF
2
(QFN5-32)
(QFN5-32)
(QFN5-32)
(QFN5-32)
PIN No.
PIN No.
PIN No.
PIN No.
10
11
12
27
28
31
30
29
15
14
16
20
21
23
24
19
18
25
9
1
2
3
6
I
I
I
Cancel the reset after V
This pin is pulled up to V
Pump-up capacitor C1 connect pin.
Pump-up capacitor C1 connect pin.
Pump-up capacitor C2 connect pin.
Pump-up capacitor C2 connect pin.
It is possible to add delay to the LED current change waveform by connecting an
external capacitor CLED with this pin.
(Connection of CLED=1µF is recommended)
LED 1 cathode connect pin.
LED 2 cathode connect pin.
LED 3 cathode connect pin.
LED 4 cathode connect pin.
* Connect this pin to ground when using three LED lamps only.
Connect capacitor CV
Test pin.
* Set it to “OPEN.”
Brightness evaluation sampling cycle select pin.
LED drive voltage output pin (LED common anode)
Sense resistor connect pin.
Sensor connect pin.
Pin that connects to capacitor for delaying LED current change
Connect pin for LED maximum current setting resistor
Internal reference voltage pin.
2
2
2
C clock input pin.
C data input pin.
C register hard reset pin.
SAMPLE (with pull-up)
RESET
H
H
L
L
EPSON
REF
DDL
DD1
immediately next to V
has risen.
=V
DD2
level in the IC.
Function
Function
Function
Function
Sampling cycle (TSAMPL)
Resets I
S1F76680 Technical Manual (Rev.1.22)
REF
Exits reset
1310msec
655msec
Function
pin.
2
C register