NCP5623 데이터 시트보기 (PDF) - ON Semiconductor

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NCP5623

Triple Output I2C Controlled RGB LED Driver

ON Semiconductor 

NCP5623

PIN ASSIGNMENT

Pin

Name

Type

Description

1

IC

This pin is internally connected. It must be left open.

2

GND

POWER This pin is the GROUND signal for the analog and digital blocks and output current control. The

pin must be connected to the system ground, a ground plane being strongly recommended.

3

LED3 OUTPUT, This pin sinks to ground and monitors the current flowing into the BLUE LED, intended to be

POWER used in illumination application (Note 1). The Anode of the associated LED shall be connected

to the Vbat supply.

4

LED2 OUTPUT, This pin sinks to ground and monitors the current flowing into the GREEN LED, intended to be

POWER used in illumination application (Note 1). The Anode of the associated LED shall be connected

to the Vbat supply.

5

LED1 OUTPUT, This pin sinks to ground and monitors the current flowing into the RED LED, intended to be

POWER used in illumination application (Note 1). The anode of the associated LED shall be connected

to the Vbat supply.

6

GND

ANALOG This pin copies the Analog Ground and shall be connected to the system ground plane.

GROUND

7, 8

NC

This pin must be left floating with no connection.

9

SDA

INPUT, This pin carries the data provided by the I2C protocol. The content of the SDA byte is used to

DIGITAL program the mode of operation and to set up the output current.

10

IREF

ANALOG This pin provides the reference current, based on the internal band−gap voltage reference, to

control the output current flowing in the LED. A 1% tolerance, or better, resistor shall be used to

get the highest accuracy of the LED current. An external current mirror can be used to bias this

pin to dynamically set up the LED maximum current.

In no case shall the voltage at IREF pin be forced either higher or lower than the 600 mV

provided by the internal reference.

11

SCL

INPUT, This pin carries the I2C clock to control the I2C communication. The SCL clock is associated

DIGITAL with the SDA signal.

12

Vdet

INPUT This pin provides a DC bias to the internal circuit and must be connected to the same voltage

that the one applied to the Vbat pin 13.

13

Vbat

POWER This pin is the input Battery voltage to supply the analog and digital blocks. The pin must be

decoupled to ground by a 1 mF or higher ceramic capacitor (Note 2).

14

IC

This pin is internally connected. It must be left open.

1. The maximum current is 37 mA for each LED

2. Using low ESR ceramic capacitor, X5R type, is recommended.

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3

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