ADM8843

Rev. 0 | Page 5 of 16

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

PIN 1

INDICATOR

1

2

C2+

3

4

GND

11 C2–

12 CTRL2

10 GND

9

GND

TOP VIEW

(Not to Scale)

ADM8843

Figure 2. Pin Configuration

Table 3. Pin Function Descriptions

Pin No.

Mnemonic

Description

1

all the LEDs.

2

C2+

Flying Capacitor 2 Positive Connection.

3

4, 9, 10

GND

Device Ground Pins.

5–8

FB1–FB4

LED1–LED4 Cathode Connection and Charge Pump Feedback. The current flowing in these LEDs is

unconnected or connected to GND.

11

C2−

Flying Capacitor 2 Negative Connection.

12

CTRL2

Digital Input. 3 V CMOS Logic. Used with CTRL1 to control the shutdown operation of the main and

sub LEDs.

13

CTRL1

Digital Input. 3 V CMOS Logic. Used with CTRL2 to control the shutdown operation of the main and

sub LEDs.

14

C1−

Flying Capacitor 1 Negative Connection.

15

Positive Supply Voltage Input. Connect this pin to a 2.6 V to 5.5 V supply with a 4.7 µF decoupling

capacitor.

16

C1+

Flying Capacitor 1 Positive Connection.

-

EP

Expose Paddle. Connect the exposed paddle to GND.