AAT3170 datasheet(10/15 Pages) ANALOGICTECH

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AAT3170

High Current LED Flash Driver Charge Pump IC

ChargePumpTM

PRODUCT DATASHEET

3170.2007.11.1.2

www .analogictech.com

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.

AS2Cwire Serial Interface Addressing

Address

EN/SET

Rising Edges

Data Register

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

1LO

2HI

3LO

4HI

ON/OFF Register (Address 4)

Data

MODE

1ON

OFF

Timer Register (Address 5)

Data

On-Time

T (sec) = 10 · CT (μF)

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

Voltage Register (Address 6)

Data

MODE

Current

Voltage

Thermal Protection

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.

AS2Cwire Serial Interface Timing

Address

Data

EN/SET

Address

Data Reg 1

Data Reg 2

2 . . .

n <= 16

n - 1

LAT

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