S1F76680 Epson Electronics America, Inc., S1F76680 Datasheet - Page 8

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

5. PIN ASSIGNMENT
5. PIN ASSIGNMENT
4
Pin Name
* EXPOSED DIE ATTACH PAD (refer to the outline drawing in No.P28) in the rear surface metal part of QFN5-32 package is
(QFN5-32PIN)
PDOUT
RESET
SAMPL
AOUT
CLED
LED1
LED2
LED3
LED4
V
(test)
(test)
(test)
(test)
V
V
V
(test)
V
V
SDA
V
V
EN3
EN2
SCL
EN1
C1N
C1P
C2P
C2N
grounded to the same potential as V
Set the rear surface metal part to the open or grounding.
PD
OUT
SS2
DDL
DD2
REF
SS3
SS1
DD1
I/O
-
-
-
-
-
I/O
-
-
-
-
-
-
-
-
-
O
O
O
O
O
I
I
I
I
I
I
I
I
I
I
I
I
QFN5-32
PIN No.
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
1
2
3
4
5
6
7
8
9
1
8
* Since this is a test pin, be sure to keep it “OPEN.”
* Since this is a test pin, be sure to keep it “OPEN.”
* Since this is a test pin, be sure to keep it “OPEN.”
Automatic luminance control/forced full lighting select pin. It is pulled down Internally.
Ground pin.
* Since this is a test pin, be sure to keep it “OPEN.”
Input power supply pin for I
Automatic luminance control circuit activation/stop select pin. It is pulled down internally.
I
I
I
Brightness evaluation sampling cycle select pin. It is pulled up internally.
Input power supply pin.
Sensor connect pin.
Sense resistor connect pin.
Pin that connects to capacitor for LED current change delay
Input pin for activating IC. It is pulled down internally.
Internal reference voltage pin.
Pin that connects to resistor for LED maximum current setting.
LED1 connect pin.
LED2 connect pin.
Ground pin.
LED3 connect pin.
LED4 connect pin. * Be sure to connect this pin to ground when using three LEDs only.
* Since this is a test pin, be sure to keep it “OPEN.”
Ground pin.
Pump-up capacitor C1 connect pin.
Pump-up capacitor C1 connect pin.
LED drive voltage output pin (LED common anode)
Pump-up capacitor C2 connect pin.
Pump-up capacitor C2 connect pin.
Input power supply pin.
2
2
2
C clock input pin.
C data I/O pin.
C reset (register initialization) pin
(test)
(test)
(test)
EN3
V
(test)
V
EN2
SS2
DDL
32
SS1
9
=V
SS2
=V
SS3
.
S1F76680
EPSON
2
C I/O.
Function
25
16
LED4
LED3
LED2
LED1
A
V
V
EN1
OUT
REF
SS3
S1F76680 Technical Manual (Rev.1.22)
17
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