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LP5862 2 × 18 LED Matrix Driver with 8-Bit Analog and 8-/16-Bit PWM Dimming

1 Features

•LED matrix topology:

–18 constant current sinks with 2 scan switches

for 36 LED dots

–Configurable for 1 to 2 scan switches

•Operating voltage range:

–V

CC

/V

LED

range: 2.7V to 5.5V

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

•18 constant current sinks with high precision:

–50mA per current sink when V

CC

≥ 3.3V

–Device-to-device error: ±5%

–Channel-to-channel error: ±5%

–Phase-shift for balanced transient power

•Ultra-low power consumption:

–Shutdown mode: I

CC

≤ 2μA when EN = Low

–Standby mode: I

CC

≤ 10μA when EN = High

and CHIP_EN = 0 (data retained)

–Active mode: I

CC

= 3mA (typ.) when channel

current = 5mA

•Flexible dimming options:

–Individual ON, OFF control for each LED dot

–Analog dimming (current gain control)

•Global 3-bit Maximum Current (MC) setting

for all LED dots

•3 groups of 7-bit Color Current (CC) setting

for red, green, and blue

•Individual 8-bit Dot Current (DC) setting for

each LED dot

–PWM dimming with audible-noise-free

frequency

•Global 8-bit PWM dimming for all LED dots

•3 programmable groups of 8-bit PWM

dimming for LED dot arbitrary mapping

•Individual 8-bit or 16-bit PWM dimming for

each LED dot

•Full addressable SRAM to minimize data traffic

•Individual LED dot open and short detection

•Deghosting and low brightness compensation

•Interface options:

–1MHz (max.) I

2

C interface when IFS = Low

–12MHz (max.) SPI interface when IFS = High

2 Applications

•LED animation and indication for:

–Keyboard, mouse, and gaming accessories

–Major and smart home appliances

–Smart speaker, wired and wireless speaker

–Audio mixer, DJ equipment, and broadcast

–Access equipment, switches, and servers

•Constant current sinks for optical module

3 Description

Electronic devices are becoming smarter, requiring

larger quantity of LEDs for animation and indication

purposes. A high-performance LED matrix driver

is required to improve user experience with small

solution size.

The LP586x devices are a family of high performance

LED matrix drivers. The device integrates 18 constant

current sinks with N (N = 1/2/4/6/8/11) switching

MOSFETs to support N × 18 LED dots or N × 6 RGB

LEDs. The LP5862 integrates two MOSFETs for up to

36 LED dots or 12 RGB LEDs.

The LP5862 supports both analog dimming and

PWM dimming methods. For analog dimming, each

LED dot can be adjusted with 256 steps. For PWM

dimming, the integrated 8-bit or 16-bit configurable

PWM generators enable smooth and audible-noise-

free dimming control. Each LED dot can also be

arbitrarily mapped into 8-bit Group PWM to achieve

dimming control together.

The LP5862 device implements full addressable

SRAM to minimize the data traffic. The ghost-

cancellation circuitry is integrated to eliminate both

upside and downside ghosting. The LP5862 also

supports LED open and short detection functions.

Both 1-MHz (maximum) I

2

C and 12-MHz (maximum)

SPI are available in LP5862.

Device Information

PART NUMBERPACKAGE

(1)

BODY SIZE (NOM)

LP5862

VQFN (32)4.00mm × 4.00mm

TSSOP (38)9.70mm × 4.40mm

(1)For all available packages, see the orderable addendum at

the end of the data sheet.

VIO_EN

SDA_MOSI

SCL_SCLK

SW0

CS17

MCU

VCC

GND

LP5862

ADDR0_MISO

VCAP

CS2

CS0

VSYNC

CS1

VLED

ADDR1_SS

IFS

V

LED

:2.7Vto5.5V

V

CC

:2.7Vto5.5V

C

VLED

C

VCC

C

VIO

V

IO

:1.8Vto5V

R

Pullup

C

VCAP

AGND

4.7kΩ

1μF

1μF

1nF

1μF

Oponal

SW1

RedLED

GreenLED

BlueLED

Simplified Schematic

LP5862

SNVSC53A – DECEMBER 2021 – REVISED JUNE 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