AAT1232 Datasheet, PDF (13/17 Pages) Advanced Analogic Technologies – 24V 100mA Step-Up Converter

AAT1232
24V 100mA Step-Up Converter
(SELV=^OUH^T igh)
10.0
12.0
15.0
16.0
18.0
20.0
24.0
-
-
-
-
-
-
-
12.0
15.0
16.0
18.0
15.0
16.0
18.0
18.0
20.0
24.0
24.0
(SELV^O=^UL^T ow)
-
-
-
-
-
-
-
10.0
12.0
15.0
16.0
18.0
20.0
24.0
10.0
10.0
10.0
10.0
12.0
12.0
12.0
15.0
15.0
15.0
18.0
R3 = 4.99kΩ
R1 (kΩ)
R2 (kΩ)
36.5
0
44.2
0
57.6
0
61.9
0
69.8
0
78.7
0
95.3
0
78.7
0
95.3
0
121
0
127
0
143
0
162
0
196
0
75.0
3.32
76.8
1.65
76.8
1.24
78.7
0.562
90.9
3.01
93.1
2.49
93.1
1.65
115
3.32
118
2.49
118
1.24
143
2.49
R3 = 20.0kΩ
R1 (kΩ)
R2 (kΩ)
147
0
182
0
232
0
249
0
280
0
316
0
383
0
316
0
383
0
487
0
511
0
590
0
649
0
787
0
301
13.0
309
6.65
309
4.99
316
2.21
374
12.1
374
10.0
374
6.65
464
13.3
475
10.0
475
4.99
576
10.0
Table 1: SEL Pin Voltage Control Resistor Values (1% resistor tolerance).
S²Cwire Serial Interface
AnalogicTech's S²Cwire serial interface is a propri-
etary high-speed single-wire interface available
only from AnalogicTech. The S²Cwire interface
records rising edges of the EN/SET input and
decodes into 16 different states. Each state corre-
sponds to a voltage setting on the FB2 pin.
S²Cwire Serial Interface Timing
The S²Cwire serial interface has flexible timing.
Data can be clocked-in at speeds up to 1MHz. After
data has been submitted, EN/SET is held high to
latch the data for a period T_LAT. The output is sub-
sequently changed to the predetermined voltage.
When EN/SET is set low for a time greater than
T_OFF, the AAT1232 is disabled. When disabled, the
register is reset to the default value, which sets the
FB2 pin to 0.6V if EN is subsequently pulled high.
EN/SET
Rising
Edges
1
2
3
4
5
6
7
8
FB2
Reference
Voltage (V)
0.60 (Default)
0.64
0.68
0.72
0.76
0.80
0.84
0.88
EN/SET
Rising
Edges
9
10
11
12
13
14
15
16
FB2
Reference
Voltage (V)
0.92
0.96
1.00
1.04
1.08
1.12
1.16
1.20
Table 2: S²Cwire Voltage Control Settings
(SEL = Low).
1232.2006.12.1.3
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