LP3942 datasheet(3/20 Pages) NSC

Teilenummer	LP3942

Bauteilbeschribung	The Dual RGB LED Controller with 1.5x/2x Charge Pump and SPI Interface

PDF	20 Pages

Scroll/Zoom	100%

Hersteller	NSC [National Semiconductor (TI)]

Direct Link	http://www.national.com

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3 / 20 page

Pin Description

Pin #

Name

Type

Description

Logic Input

SPI Slave Select

Logic Input

SPI Serial Data

SCK

Logic Input

SPI Clock

Output

Open Drain, Red LED (1)

Output

Open Drain, Green LED (1)

Output

Open Drain, Blue LED (1)

GND3

Ground

Ground 3

Output

Open Drain, Blue LED (2)

Output

Open Drain, Green LED (2)

Output

Open Drain, Red LED (2)

OUT

Output

Charge Pump Output

C1P

Flying capacitor C1 connection

Power

Input voltage from battery

C2N

Flying capacitor C2 connection

GND1

Ground

Ground 1

C1N

Flying capacitor C1 connection

C2P

Flying capacitor C2 connection

Power

LDO/Supply voltage input

GND2

Ground

Ground 2

BIAS

Input

Bias resistor connection

Input

Red LED current set resistor

Input

Green LED current set resistor

Input

Blue LED current set resistor

NRST

Logic Input

Low active reset input pin. (Internal pull down 1 M

Ω)

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