PRODUCT DATASHEET
AAT3172
TM
ChargePump
High Current LED Flash Driver Charge Pump IC
AS2Cwire Serial Interface Addressing
ON/OFF Register (Address 4)
Data
MODE
EN/SET
Rising
Edges
1
2
ON
OFF
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
Reserved
Voltage/Current Mode
Voltage Register (Address 6)
Data
MODE
1
2
Current
Voltage
Thermal Protection
HI/LO Scale Register (Address 3)
The AAT3172 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.
Data
F1
F2
1
2
3
4
LO
HI
LO
HI
LO
HI
HI
LO
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
w w w . a n a l o g i c t e c h . c o m
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3172.2008.04.1.6
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
