AAT3174 Datasheet, PDF (9/14 Pages) Advanced Analogic Technologies – High Current, High Efficiency Charge Pump

AAT3174
High Current, High Efficiency Charge Pump
Data
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Total Output
(% of I_MAX)
100.0
89.1
79.4
70.8
63.1
56.2
50.1
44.7
39.8
35.5
31.6
28.2
25.1
22.4
20.0
0.0
Table 1: Current Level Settings.
The S²Cwire interface records rising edges of the
EN/SET pin and decodes them into 16 individual
current level settings with Code 1 reserved for
maximum current. Once EN/SET has been held in
the logic high state for time T_LAT, the programmed
current is seen at the current source outputs and
the internal data register is reset to 0. For subse-
quent current level programming, the number of
rising edges corresponding to the desired code
must be entered on the EN/SET pin.
When EN/SET is held low for an amount of time
greater than T_OFF, the AAT3174 enters into shut-
down mode and draws less than 1µA from V_IN.
Data and address registers are reset to 0 during
shutdown.
S²Cwire Serial Interface Timing
EN/SET
Data Reg
T_HI
T_LO
T _LAT
1
2
n-1
n ≤ 16
0
TOFF
n
0
3174.2006.05.1.2
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