Data Sheet

ADD5205

Rev. 0 | Page 7 of 16

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

VIN

SHDN

NOTES

1. CONNECT THE EXPOSED PADDLE TO GROUND.

GND

FB4

C_FILTER

ISET

(Not to Scale)

9

8

7

1

2

3

TOP

VIEW

ADD5205

Figure 3. Pin Configuration

Table 5. Pin Function Descriptions

Pin

No.

Mnemonic

Description

1

VIN

Supply Input Pin. Bypassed with a capacitor to ground.

2

SHDN

Shutdown Control Pin for Enabling IC. Active low.

3

GND

Ground Pin.

4

SW

Drain Connection of the Internal Power FET Pin.

5

OVP

Overvoltage Protection Sense Input Pin. Must be locally bypassed with a 100 nF capacitor and placed as close as

possible to the IC.

6

PWM

PWM Signal Input Pin.

7

ISET

Full-Scale LED Current Set Pin. A resistor from this pin to ground sets the LED current up to 25 mA.

8

C_FILTER

Filtered PWM Signal Output Pin. Connect a capacitor between C_FILTER and ground. This capacitor forms a low-pass

filter with an internal resistor.

9

FB4

Regulated Current Sink Input Pin. Connect the bottom cathode of the LED string to this pin. If unused, connect FB4

to ground.

10

FB3

Regulated Current Sink Input Pin. Connect the bottom cathode of the LED string to this pin. If unused, connect FB3

to ground.

11

FB2

Regulated Current Sink Input Pin. Connect the bottom cathode of the LED string to this pin. If unused, connect FB2

to ground.

12

FB1

Regulated Current Sink Input Pin. Connect the bottom cathode of the LED string to this pin. This channel should be

connected to LEDs as a default channel.

EPAD

Connect the exposed paddle to ground.