
29
SDF00034AEB
AN32502A
Publication data: November 2002
80H
1.1 V
A8H
1.3 V
6CH
1.0 V
Ch.1 output voltage
Sub Address
00H
Refer to sheet No.17 for I
2
C serial setting list.
Refer to sheet No.25 for ch.1 voltage change procedure.
These values are based on the premise that feedback resistance values of ch.1 are identical with the ones described on the
block diagram.
When this resistance ratio differs, the above-listed setting values vary.
Note) *: This V
REF
(reference value) is value in case of design.
Power dissipation of package HQFN064-P-0808
1) With no radiation board soldered, there are no other patterns than the ones to be connected from each pin to the pin lands
on the outer rim of PCB.
2) With radiation board soldered, another pattern of 4mm is added on the rear side of the IC.
1.08 V
Ch.1 V
REF
(reference value)
0.92 V
0.83 V
Technical Data (continued)
7-
2. Voltage setting (2)
1) Ch.1 voltage setting from I
2
C
Ch.1 voltage setting is possible with 7-bit DAC.
0.000
1.499
2.500
2.000
1.500
1.000
0.500
3.000
3.500
2.427
0
25
150
125
50
75
100
0.460
P
D
T
a
Ambient temperature T
a
(
°
C)
P
D
(
Mounted on standard
board(grass epoxy :
50mm
×
50mm
×
0.8
mm)
With radiation board
soldering
R
th(j-a)
=
41.2
°
C/W
Package itself
R
th(j-a)
=
217.1
°
C/W
Mounted on standard
board (grass epoxy :
50mm
×
50mm
×
0.8mm)
With no radiation
board soldering
R
th(j-a)
=
66.7
°
C/W