PRODUCT DATASHEET
AAT3170
ChargePumpTM
High Current LED Flash Driver Charge Pump IC
AAT3170 has been disabled. After shutdown, if only data
is issued with the first rising edge (i.e., 1 - 16 edges, no
address given), both current sinks will be programmed
since the default will be Address 0.
Timer Register (Address 5)
On-Time
Data
T (sec) = 10 · CT (μF)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
16/16 x T
15/16 x T
14/16 x T
13/16 x T
12/16 x T
11/16 x T
10/16 x T
9/16 x T
8/16 x T
7/16 x T
6/16 x T
5/16 x T
4/16 x T
3/16 x T
2/16 x T
1/16 x T
AS2Cwire Serial Interface Addressing
EN/SET
Rising Edges
Address
Data Register
0
1
2
3
4
5
6
17
18
19
20
21
22
23
F1 and F2 Current Scale
F1 Current Scale
F2 Current Scale
HI/LO
ON/OFF
Timer
Voltage/Current Mode
HI/LO Scale Register (Address 3)
Data
F1
F2
1
2
3
4
LO
HI
LO
HI
LO
HI
HI
LO
Voltage Register (Address 6)
Data
MODE
1
2
Current
Voltage
ON/OFF Register (Address 4)
Thermal Protection
Data
MODE
The AAT3170 has a thermal protection circuit that will
shut down the charge pump if the die temperature rises
above the thermal limit, as is the case during a short
circuit of the OUT pin.
1
2
ON
OFF
AS2Cwire Serial Interface Timing
Address
Data
THI
TLAT
TLO
TLAT
EN/SET
1
2
17
18
1
2 . . .
n <= 16
0
Address
Data Reg 1
Data Reg 2
1
0
0
n - 1
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3170.2007.11.1.2
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
