AS3689 datasheet(24/72 Pages) AMSOSRAM

24 / 72 page

AS3689

austriami crosyst ems

Datasheet, Confidential

www.austriamicrosystems.com (mlg, ptr)

Revision 1.0.2 / 20070115

22 - 70

Figure 15 – PCB Wire Inductance Example 2

C51

C52

Battery

Connector

VBAT1

Ltotal=L1+n*L2

7.4

Current Sinks

The AS3689 contains general purpose current sinks intended to control backlights, buzzers, and vibrators. All

current sinks have an integrated protection against overvoltage.

CURR1, CURR2 and CURR6 is also used as feedback for the Step Up DC/DC Converter (regulated to 0.5V in

this configuration).

Current sinks CURR1, CURR2 and CURR6 are high-voltage compliant (15V) current sinks, used e.g., for

series of white LEDs

Current sinks CURR3x (CURR30, CURR31, CURR32 and CURR33) are parallel 5V, high-current current

sinks, used e.g., for a photocamera flash LED. Due to their wide setting range, they also can be used for

backlighting (e.g. LCD Main backlight).

Current sinks RGB1, RGB2, and RGB3 are general purpose current sinks e.g. for a fun LED (the pins for

these current sinks are shared with the OLED charge pump); the RGB3 current sink pin is shared with the

LDO

Current sinks CURR4x (CURR41, CURR42, and CURR43) are general purpose current sinks e.g. for white

LEDs.

Current sinks CURR5x (CURR51, and CURR52) are general purpose current sinks e.g. for white LEDs.

AS3689 Datasheet(PDF) 24 Page - ams-OSRAM AG