LP5860
SNVSBU8 – MAY 2021
LP5860 11 × 18 LED Matrix Driver with 8-bit Analog and 8-/16-bit PWM Dimming
1 Features
3 Description
•
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:
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.
•
•
– 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
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.
•
•
Flexible dimming options:
– Individual ON/OFF control for each LED dot
– Analog dimming (current gain control)
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.
•
•
•
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
Device Information
PART NUMBER
PACKAGE(1)
BODY SIZE (NOM)
•
•
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
LP5860
VQFN (40)
5 mm × 5 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
•
VLED: 2.7 V to 5.5 V
VCC: 2.7 V to 5.5 V
VIO: 1.8 V to 5 V
CVLED
1 ꢀF
•
•
•
•
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
CVCC
1 ꢀF
RPullup
4.7 kΩ
VCC
VLED
SW0
SW1
SW2
VIO_EN
CVIO
1 nF
SDA_MOSI
SCL_SCLK
ADDR1_MISO
ADDR2_SS
VSYNC
SW10
LP5860
MCU
2 Applications
CS0
CS1
•
LED animation and indication for:
CS2
– Keyboard, mouse, and gaming accessories
– Major and smart home appliances
VCAP
CVCAP
1 µF
CS17
IFS
AGND
GND
Optional
– Smart speaker, wired and wireless speaker
– Audio mixer, DJ equipment, and broadcast
– Access equipment, switches, and servers
Simplified Schematic
•
Constant current sinks for optical module
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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