Texas Instruments LP5813 Bruksanvisning

Läs gratis den bruksanvisning för Texas Instruments LP5813 (75 sidor) i kategorin ej kategoriserat. Guiden har ansetts hjälpsam av 2 personer och har ett genomsnittsbetyg på 4.6 stjärnor baserat på 4 recensioner. Har du en fråga om Texas Instruments LP5813 eller vill du ställa frågor till andra användare av produkten? Ställ en fråga

LP5813 Synchronous Boost 4 × 3 Matrix RGB LED Driver with Autonomous Control

1 Features

•Operating voltage range:

–Input voltage (V

IN

) range: 0.5V to 5.5V

–1.8V minimum input voltage for start-up

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

•High efficiency synchronous boost converter

–Output voltage (V

OUT

) range: 3V to 5.5V

–140mΩ (HS) / 60mΩ (LS) MOSFETs

–1.6A valley switching current limit

–95% efficiency at V

IN

= 4.2V, V

OUT

= 5.0V, I

OUT

= 300mA

–Pass-through mode when VIN > VOUT setting

–True disconnection between input and output

during shutdown

•Time-cross-multiplexing (TCM) topology:

–Drives up to 12 LEDs or 4 RGB LEDs

–¼, ⅓, ½, 1 multiplexing ratio

–Supports direct, TCM, and mix-drive modes

•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:

–Shutdown: I

SD

= 0.1μA (typical) when EN = Low

–Standby: I

STB

= 26μA (typical) when EN = High

and CHIP_EN = 0 (data retained)

–Active: I

NOR

= 0.45mA (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 LP5813 is a synchronous boost 4 × 3 matrix RGB

LED driver with autonomous animation engine control.

The device is ideal to support battery-powered

applications with 0.5V to 5.5V input voltage range,

and it has ultra-low normal operation current with

0.4mA (typical) when illuminate LEDs.

The integrated synchronous boost converter

maintains excellent efficiency and keeps the

brightness of LEDs stable over a wide operating

voltage range. Output voltage can be selected for

different LED forward voltage from 3V to 5.5V with

0.1V step. The boost converter can power not only

the LEDs driven by the device itself, but also other

loads in the system. If the boost converter need to be

bypassed, VOUT is used as the power supply input

for the LED driver blocks.

The time-cross-multiplexing (TCM) structure is

adopted, which uses 4 output pins to control 12 LED

dots individually. Both high-side scan switch and low-

side current sink are contained in one output. The

total solution size are minimized for space limited

system.

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 NUMBERPACKAGEBODY SIZE (NOM)

LP5813

DSBGA (12)1.84mm × 1.43mm

WSON (12)

(1)

3mm × 3mm

(1)Product Preview

LP5813

OUT0

OUT1

OUT2

SW

OUT3

22 uF

10 uF

1 uH

0.5 V - 5.5 V

GND

OFF

ON

VIN

EN

SCL

SDA

SYNC

VOUT

MCU

V

MCU

D0

D1

D2

D3

Red LED

Green LED

Blue LED

4.7kΩ 4.7kΩ

Simplified Schematic

LP5813

SNVSC74C – SEPTEMBER 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.

Produktspecifikationer