Preliminary Datasheet

4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER

AP3606/AP3607

Dec. 2008 Rev. 1. 2

BCD Semiconductor Manufacturing Limited

2

Exposed PAD,

Connected to AGND

Note: Pin 15 should be connected with Pin 16 on PCB Board.

EP

5

678

13

14

15

16

1

2

3

49

10

11

12

Pin 1 Dot by Marking

C1-

C1+

C2+

C2-

D5

D4

D3

D6

C1-

C1+

C2+

C2-

NC

D4

D3

D2

Exposed PAD,

Connected to AGND

Note: Pin 14 should be connected with Pin 16 on PCB Board.

EP

5

678

13

14

15

16

1

2

3

49

10

11

12

Pin 1 Dot by Marking

Pin Configuration

FN Package

(QFN-3×3-16)

AP3606

AP3607

Figure 2. Pin Configuration of AP3606/AP3607 (Top View)

Pin Description

Pin Number

AP3606 AP3607

Pin Name

Function

1

1

C1-

Flying capacitor 1 negative terminal. The flying capacitor should be connected as

close to this pin as possible

2

2

C2-

Flying capacitor 2 negative terminal. The flying capacitor should be connected as

close to this pin as possible

3

3

C2+

Flying capacitor 2 positive terminal. The flying capacitor should be connected as

close to this pin as possible

4

4

C1+

Flying capacitor 1 positive terminal. The flying capacitor should be connected as

close to this pin as possible

5

5

AGND

Analog ground

6

6

PGND

Power ground

7

7

VIN

Supply voltage input

8

8

EN

Enable control input. Logic high enables the IC; while logic low forces the IC into

shutdown mode. It is used for digital dimming by applying a pulse signal on it.

9, 15

NC

No connection (AP3606 only)

9, 10

D6 , D5

Current sink for WLED6 and WLED5. Connect the cathode of WLEDs to these

pins. If not used, these pins must be connected with VIN (AP3607 only)

10, 11, 12,

13

11, 12, 13,

14

D4 ~ D1

Current sink for WLED4, 3, 2, 1. Connect the cathode of WLEDs to these pins. If

not used, these pins must be connected with VIN

14

15

VOUT2

Output pin 2. It powers 4 channels current sink (AP3606) and 6 channels current

sink (AP3607)

16

16

VOUT1

Output Pin 1. It’s the charge pump output. The output capacitor should be placed

closely to this pin