Texas Instruments LP5810 Bedienungsanleitung

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LP5810 4-Channel RGBW LED Driver with Autonomous Control

1 Features

•Operating voltage range:

–V

CC

range: 2.7V to 5.5V

–Logic pins compatible with 1.8V, 3.3V, and 5V

•4 constant current sinks with high precision:

–0.1mA to 51mA per current sink

–Device-to-device error: max ±5%

–Channel-to-channel error: max ±5%

–Ultra-low headroom voltage: 110mV (typ.) at

25.5mA; 210mV (typ.) at 51mA

–PWM phase shift configurable for each LED

•Ultra-low power consumption:

–Standby: I

STB

= 26μA (typical) when CHIP_EN

= 0 (data retained)

–Active: I

NOR

= 0.4mA (typical) when LED

current = 25.5mA

•Analog dimming (current gain control)

–Global 1-bit Maximum Current (MC): 25.5mA or

51mA

–Individual 8-bit Dot Current (DC) setting

•PWM dimming up to audible-noise-free 24kHz

–Individual 8-bit PWM dimming resolution

–Linear or exponential dimming curves

•Autonomous animation engine control

•Individual LED dot open/short detection

•Integrated de-ghosting function

•1MHz (max.) I

2

C interface

•–40°C to 85°C operating temperature range

2 Applications

LED animation and indication for:

•Portable and wearable electronics - earbud and

charging case, E-cigarette, smart watch

•Gaming and home entertainment - smart speaker,

RGB mouse, VR headset, and controller

•Internet-of-Things (IOT) - E-tag, video doorbell

•Networkings - router, access point

•Industrial HMI - EV charger, factory automation

3 Description

The LP5810 is a 4-channel RGBW LED driver with

autonomous animation engine control. The device has

ultra-low normal operation current with 0.4mA (typical)

when illuminate LEDs.

Both analog dimming and PWM dimming methods are

adopted to achieve powerful dimming performance.

The output current of each LED can be adjusted

with 256 steps from 0.1mA to 25.5mA or 0.2mA to

51mA. The 8-bit PWM generator enables smooth

and audible-noise-free dimming control for LED

brightness.

The autonomous animation engine can significantly

reduce the real-time loading of controller. Each LED

can be configured through the related registers to

realize vivid and fancy lighting effects. The device

can generate 6MHz clock signal and use it for

synchronizing the lighting effects among multiple

devices.

Package Information

PART NUMBERPACKAGE

(1)

BODY SIZE (NOM)

LP5810

DSBGA (9)1.43mm × 1.34mm

WSON (8)3mm × 3mm

(1)Product Preview

2.7 V - 5.5 V

LP5810

OUT0

OUT1

OUT2

OUT3

1 uF

GND

VCC

SCL

SDA

SYNC

MCU

V

MCU

4.7k



4.7k



Red LED

Green LED

Blue LED

VLED

LED0

LED1

LED2

LED3

White LED

Simplified Schematic

LP5810

SNVSCD0D – NOVEMBER 2023 – REVISED FEBRUARY 2025

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

Produktspezifikationen