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LP5892-Q1 Automotive 48 Current Sources, 32 Scans, Common Cathode LED Matrix Driver
SNVSCS3
February 2025
LP5892-Q1
PRODUCTION DATA
CONTENTS
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LP5892-Q1 Automotive 48 Current Sources, 32 Scans, Common Cathode LED Matrix Driver
1
1
Features
2
Applications
3
Description
4
Pin Configuration and Functions
5
Specifications
5.1
Absolute Maximum Ratings
5.2
ESD Ratings
5.3
Recommended Operating Conditions
5.4
Thermal Information
5.5
Electrical Characteristics
5.6
Timing Requirements
5.7
Switching Characteristics
5.8
Typical Characteristics
6
Detailed Description
6.1
Overview
6.2
Functional Block Diagram
6.3
Feature Description
6.3.1
Independent and Stackable Mode
6.3.1.1
Independent Mode
6.3.1.2
Stackable Mode
6.3.2
Current Setting
6.3.2.1
Brightness Control (BC) Function
6.3.2.2
Color Brightness Control (CC) Function
6.3.2.3
Choosing BC/CC for a Different Application
6.3.3
Frequency Multiplier
6.3.4
Line Transitioning Sequence
6.3.5
Protections and Diagnostics
6.3.5.1
Thermal Shutdown Protection
6.3.5.2
IREF Resistor Short Protection
6.3.5.3
LED Open Load Detection and Removal
6.3.5.3.1
LED Open Detection
6.3.5.3.2
Read LED Open Information
6.3.5.3.3
LED Open Caterpillar Removal
6.3.5.4
LED Short and Weak Short Circuitry Detection and Removal
6.3.5.4.1
LED Short/Weak Short Detection
6.3.5.4.2
Read LED Short Information
6.3.5.4.3
LSD Caterpillar Removal
6.4
Device Functional Modes
6.5
Continuous Clock Series Interface
6.5.1
Data Validity
6.5.2
CCSI Frame Format
6.5.3
Write Command
6.5.3.1
Chip Index Write Command
6.5.3.2
VSYNC Write Command
6.5.3.3
MPSM Write Command
6.5.3.4
Standby Clear and Enable Command
6.5.3.5
Soft_Reset Command
6.5.3.6
Data Write Command
6.5.4
Read Command
6.6
PWM Grayscale Control
6.6.1
Grayscale Data Storage and Display
6.6.1.1
Memory Structure Overview
6.6.1.2
Details of Memory Bank
6.6.1.3
Write a Frame Data into Memory Bank
6.6.2
PWM Control for Display
6.7
Register Maps
6.7.1
FC0
6.7.2
FC1
6.7.3
FC2
6.7.4
FC3
6.7.5
FC4
6.7.6
FC14
6.7.7
FC15
6.7.8
FC17
6.7.9
FC19
6.7.10
FC20
6.7.11
FC21
7
Application and Implementation
7.1
Application Information
7.2
Typical Application
7.2.1
Design Requirements
7.2.1.1
System Structure
7.2.1.2
SCLK Frequency
7.2.1.3
Internal GCLK Frequency
7.2.1.4
Line Switch Time
7.2.1.5
Blank Time Removal
7.2.1.6
BC and CC
7.2.2
Detailed Design Procedure
7.2.2.1
Chip Index Command
7.2.2.2
FC Registers Settings
7.2.2.3
Grayscale Data Write
7.2.2.4
VSYNC Command
7.2.2.5
LED Open, Short Read
7.2.3
Application Curves
7.3
Power Supply Recommendations
7.4
Layout
7.4.1
Layout Guidelines
7.4.2
Layout Example
8
Device and Documentation Support
8.1
Documentation Support
8.1.1
Related Documentation
8.2
Receiving Notification of Documentation Updates
8.3
Support Resources
8.4
Trademarks
8.5
Electrostatic Discharge Caution
8.6
Glossary
9
Revision History
10
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
RRF|76
MPQF556
Thermal pad, mechanical data (Package|Pins)
Orderable Information
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Data Sheet
LP5892-Q1
Automotive
48 Current Sources, 32 Scans,
Common Cathode LED Matrix Driver
1
Features
AEC-Q100-qualified for automotive applications:
Temperature grade 1: –40°C to +125°C, T
A
Separated V
CC
and V
R/G/B
power supply
V
CC
voltage range: 2.5V – 5.5V
V
R/G/B
voltage range: 2.5V – 5.5V
48 current source channels from 0.2mA to 40mA
Channel-to-channel accuracy: ±0.5% (typ.), ±3% (max.); device-to-device accuracy: ±0.5% (typ.), ±2.5% (max.)
Low knee voltage: 0.27V (max.) when I
OUT
= 5mA
3-bits (8 steps) global brightness control
8-bits (256 steps) color brightness control
Maximum 16-bits (65536 steps) PWM grayscale control
16 scan line switches with 190mΩ R
DS(ON)
Ultra-low power consumption
Independent V
CC
down to 2.5V
Lowest I
CC
down to 3.6mA with 50MHz GCLK
Intelligent power saving mode with I
CC
down to 0.9mA
Built-in SRAM to support 1–64 multiplexing
Single device to support 48 × 16 LEDs or 16 × 16 RGB pixels
Dual devices stackable to support 96 × 32 LEDs or 32 × 32 RGB pixels
High speed and low EMI Continuous Clock Series Interface (CCSI)
Only three wires: SCLK / SIN / SOUT
External
50
MHz (max.) SCLK with
rising
-edge transmission mechanism
Internal frequency multiplier to support high frequency GCLK
Optimized performances for LED matrix displays
Upside and downside ghosting removal
Low grayscale enhancement
LED open, weak-short, short detection and removal
2
Applications
Automotive interior light
Automotive rear light
Automotive front light
Automotive local dimming backlight
