LP5860 datasheet(1/57 Pages) TI

Teilenummer	LP5860

Bauteilbeschribung	LP5860 11 횞 18 LED Matrix Driver with 8-bit Analog and 8-/16-bit PWM Dimming

PDF	57 Pages

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Hersteller	TI [Texas Instruments]

Direct Link	http://www.ti.com

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LP5860 11 × 18 LED Matrix Driver with 8-bit Analog and 8-/16-bit PWM Dimming

1 Features

• LED matrix topology:

– 18 constant current sinks with 11 scan switches

for 198 LED dots

– Configurable for 1 to 11 scan switches

• Operating voltage range:

– VCC/VLED range: 2.7 V to 5.5 V

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

• 18 constant current sinks with high precision:

– 0.1–50 mA per current sink when VCC ≥ 3.3 V

– Device-to-device error: ±5%

– Channel-to-channel error: ±5%

– Phase-shift for balanced transient power

• Ultra-low power consumption:

– Shutdown mode: ICC ≤ 2 uA when EN = Low

– Standby mode: ICC ≤ 10 uA when EN = High

and CHIP_EN = 0 (data retained)

– Active Mode: ICC = 3 mA (typ.) when channel

current = 5 mA

• 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/short detection

• Deghosting and low brightness compensation

• Interface options:

– 1-MHz (max.) I2C interface when IFS = Low

– 12-MHz (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

to use larger quantity of LEDs for animation and

indication purposes and 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. It 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

LP5860 integrates 11 MOSFETs for up to 198 LED

dots or 66 RGB LEDs.

The LP5860 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 LP5860 device implements full addressable

SRAM to minimize the data traffic. The ghost-

cancellation circuitry is integrated to eliminate both

upside and downside ghosting. The LP5860 also

supports LED open and short detection functions.

Both 1-MHz (max.) I2C and 12-MHz (max.) SPI are

available in LP5860.

Device Information

PART NUMBER

PACKAGE(1)

BODY SIZE (NOM)

LP5860

VQFN (40)

5 mm × 5 mm

(1)

For all available packages, see the orderable addendum at

the end of the data sheet.

VIO_EN

SDA_MOSI

SCL_SCLK

SW0

SW1

CS17

MCU

VCC

GND

LP5860

ADDR1_MISO

SW2

VCAP

CS2

CS0

VSYNC

CS1

VLED

SW10

ADDR2_SS

IFS

VLED: 2.7 V to 5.5 V

VCC: 2.7 V to 5.5 V

CVLED

1 F

VIO: 1.8 V to 5 V

AGND

Optional

CVCC

1 F

RPullup

4.7 NŸ

CVIO

1 nF

CVCAP

1 µF

Simplified Schematic

LP5860

SNVSBU8 – MAY 2021

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. ADVANCE INFORMATION for preproduction products; subject to change

without notice.

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