AS3689

austriami crosyst ems

Preliminary Product Brief, Confidential

www.austriamicrosystems.com (ptr)

Revision 1.0 / 20051205

2 - 3

4

Block Diagram

Figure

1 – Application Diagram of the AS3689

Step Up DC/DC

Converter

C9

4.7µF

C10

1.5nF

Q1

SENSE_N

DCDC_GATE

DCDC_FB

R3

1M

R4

100k

C11

15nF

C2

1µF

R2

Battery

SENSE_P

Charge Pump

1:1, 1:1.5, 1:2

400mA

Battery

VBAT1

C2_P

C5

1µF

C6

1µF

C2_N

C1_P

C7

1µF

C1_N

CPOUT

D2

D3

D4

C8

2.2µF

CURR30

CURR31

CURR32

Current Sinks

each 0.6-37.8mA

D8

D9

D10

D12

D11

CURR1

CURR2

HV Current Sinks

each 0.15-38.5mA

Serial

Interface

R5

1-10k

VDD_GPIO

CLK

CLK

DATA

GPIO/

ADC

V2_5

GPIO

GPI

VDD_GPIO

References

and

Temperature

Supervision

C4

1µF

R1

220k

Battery

VBAT2

V2_5

RBIAS

RGB1

RGB2

RGB3 (VANA)

Current Sinks

0.156-40mA

OLED

Charge Pump

(Alternative Function)

Battery or CPOUT

D17,D18,D19

D1

L1

10µH

DATA

AS3689

Lighting

Management

Unit

8Bit PWM

Generator

Automatic Dimming

and LED Pattern

Generator

Vtemp

Strobe

Timer

CURR33

D5

C12

2.2µF

LDO VANA

e.g. 2.8V

LDO

1.85-3.4V 150mA

(Alternative Function)

CURR41

CURR42

CURR43

VSS_CP

Current Sinks

0.15-38.5mA

D13

D15

D14

D16

CURR6

D20,D21,D22

Current Sinks

each 0.15-38.5mA

D6

D7

CURR51

CURR52

RGB1

RGB2

VSS

VSS

R6

Battery or

CPOUT

LED

Test