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: 2.7 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 mA–50 mA per current sink when V
CC
≥ 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: I
CC
≤ 2 uA when EN = Low
– Standby mode: I
CC
≤ 10 uA when EN = High
and CHIP_EN = 0 (data retained)
– Active mode: I
CC
= 3 mA (typ.) when channel
current = 5 mA
• Flexible dimming options:
– Individual ON and 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:
– 1-MHz (max.) I
2
C 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. 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 2 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 NUMBER PACKAGE
(1)
BODY SIZE (NOM)
LP5862 VQFN (32) 4 mm × 4 mm
(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
ADDR1_MISO
VCAP
CS2
CS0
VSYNC
CS1
VLED
ADDR2_SS
IFS
V
LED
: 2.7 V to 5.5 V
V
CC
: 2.7 V to 5.5 V
C
VLED
C
VCC
C
VIO
V
IO
: 1.8 V to 5 V
R
Pullup
C
VCAP
AGND
4.7 k
1
F
1
F
1 nF
1
F
Op
onal
SW1
Red LED
Green LED
Blue LED
Simplified Schematic
LP5862
SNVSC53 – DECEMBER 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. PRODUCTION DATA.
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