Diodes AP3605 Manuel d'utilisateur télécharger pdf (Page 2)

Jan. 2013 Rev. 1. 8 BCD Semiconductor Manufacturing Limited

4-Channel Charge Pump LED Driver with Current Balancing and Wide Range PWM Dimming AP3605

Data Sheet

Pin Description

Pin Number Pin Name Function

1, 16, 15, 14 D4 to D1 Current Source Output. Connect the anode of the white LEDs to these outputs

2, 8

OUT1,

OUT2

Output Pin 1 and 2, must be connected together. The output capacitor should be placed

closely to these pins

3 PGND Power Ground. Connect this pin with power ground plane

4C2-

Flying Capacitor 2 Negative Terminal. The flying capacitor 2 should be connected as close

to this pin as possible

5, 13 V

IN1,

IN2

Supply Voltage Input 1 and 2, must be connected together

6C1-

Flying Capacitor 1 Negative Terminal. The flying capacitor 1 should be connected as close

to this pin as possible

7C2+

Flying Capacitor 2 Positive Terminal. The flying capacitor 2 should be connected as close to

this pin as possible

9C1+

Flying Capacitor 1 Positive Terminal. The flying capacitor 1 should be connected as close to

this pin as possible

10 AGND

Analog Ground. Connect this pin with control signal ground plane. PGND, AGND and the

exposed PAD should be connected together

11 ISET

Current Source Set Pin. Connect a resistor between this pin and GND to set the maximum

LED current

12 EN

Enable Control Input. Logic high enables the IC; while logic low forces the device into shut-

down mode to reduce the supply current to less than 1μA. Add a PWM signal to this pin to

achieve brightness control

Figure 2. Pin Configuration of AP3605 (Top View)

Pin Configuration

(

QFN-3x3-16

)

FN Package

Note: Pin 2 should be connected with Pin 8 and Pin 5 should be connected with Pin 13 on PCB board.

Exposed PAD, Connected to AGND

5678

Pin 1 Mark

141516

PGND

C1+

IN1

OUT1

C2+

C2-

AGND

D1D2

ISET

IN2

OUT2

1 2 3 4 5 6 7 ... 12 13

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Diodes AP3605 Manuel d'utilisateur Page 2

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