ST7669V
(3) Setting example for -0.11%/℃ TC curve
COMMAND
0xF4
DATA
1st: 0x09
3rd: 0x09
5th: 0x09
7th: 0x09
2nd: 0x09
4th: 0x09
6th: 0x09
8th: 0x09
Vop=16.48V Bias=1/10 TC= -0.11%
20.00
18.00
16.00
14.00
12.00
10.00
8.00
VOP
6.00
4.00
2.00
0.00
-30
-20
-10
0
10
20
30
40
50
60
70
80
Temp.
ꢁ
V0 fine tuning
ST7669V has 2 commands for fine tuning V0. These commands are VopOfsetInc (see section 9.1.50) and
VopOfsetDec (see section 9.1.51 ). When writing VopOfsetInc into IC for each time, V0 would increase 40mV; when writing
VopOfsetDec into IC for each time, V0 would decrease 40mV.
Example:
Vop[8:0]=1 01000010 (142h)
VopOffset[6:0]=0000010 (02h)
EV[6:0]=0111111 (3Fh)
VopOfsetInc x5
V0=3.6 + { 322 + 2 + (63-63) } x 0.04 + 0.04x5 = 16.76 (V)
Ver 1.3
53/208
6/4/2008
SITRONIX [ SITRONIX TECHNOLOGY CO., LTD. ]
