ADD8709
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
48 47 46 45 44 43 42 41 40 39 38 37
36
35
34
33
32
V
V
V
V
V
10
9
REG
1
2
3
4
5
6
7
8
9
OUT
OUT
OUT
OUT
DD
FB
GND
PIN 1
IDENTIFIER
8
V
DD
7
REG
OUT
V
V
V
V
V
V
V
V
18
IN
31 GND
17
16
15
14
IN
IN
IN
IN
IN
IN
IN
ADD8709
30
29
28
27
26
25
V
V
V
V
V
V
6
5
4
3
2
1
OUT
OUT
OUT
OUT
OUT
OUT
TOP VIEW
(Not to Scale)
13 10
12 11
11 12
13 14 15 16 17 18 19 20 21 22 23 24
Figure 2. 48-Lead Low Profile Quad Flat Package (ST-48)
Table 4. Pin Function Descriptions
Pin No. Mnemonic Name
Description
1
REGFB
Regulator Feedback
Compares a percentage of the regulator output to the internal voltage reference. Internal
resistors are used to program the desired regulator output voltage.
2
3
4
GND
VDD
REGOUT
Ground
Supply
Regulator Output
Ground. Nominally 0 V.
Supply voltage or source voltage. Nominally 16 V.
Provides a regulated output voltage for use as a reference for additional external gamma
channels.
5
6
7
8
VIN18
VIN17
VIN16
VIN15
VIN14
VIN13
VIN12
VIN11
VIN10
VIN9
VIN8
VIN7
VIN6
VIN5
VIN4
VIN3
VIN2
VIN1
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
Input
Buffer input.
GND
VDD
Ground
Supply
Ground. Nominally 0 V.
Supply voltage. Nominally 16 V.
VOUT
VOUT
1
2
Output
Buffer output. Designed to have higher sink than source capability.
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