LP5018 LED Drivers Datasheet

LP5018 Datasheet, PDF, Equivalent


Part Number

LP5018

Description

I2C RGB LED Drivers

Manufacture

etcTI

Total Page 30 Pages
Datasheet
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LP5018
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LP5018, LP5024
SLVSEB8B – OCTOBER 2018 – REVISED OCTOBER 2018
LP50xx 18-, 24-Channel, 12-Bit, PWM Ultralow-Quiescent-Current, I2C RGB LED Drivers
1 Features
1 Operating Voltage Range:
– VCC Range: 2.7 V to 5.5 V
– EN, SDA, and SCL Pins Compatible With
1.8-V, 3.3-V, and 5-V Power Rails
– Output Maximum Voltage: 6 V
• 24 Constant-Current Sinks With High Precision
– 25.5 mA Maximum per Channel With VCC in
Full Range
– 35 mA Maximum per Channel When VCC 3.3
V
– Device-to-Device Error: ±7%; Channel-to-
Channel Error: ±7%
• Ultralow Quiescent Current:
– Shutdown Mode: 1 µA (Maximum) With EN
Low
– Power Saving Mode: 10 µA (Typical) With EN
High and All LEDs Off for > 30 ms
• Integrated 12-Bit, 29-kHz PWM Generator for
Each Channel:
– Independent Color-Mixing Register Per
Channel
– Independent Brightness-Control Register Per
RGB LED Module
– Optional Logarithmic- or Linear-Scale
Brightness Control
– Integrated 3-Phase PWM-Shifting Scheme
• 3 Programmable Banks (R, G, B) for Easy
Software Control of Each Color
• 2 External Hardware Address Pins Allow
Connecting up to 4 Devices
• Broadcast Slave Address Allows Configuring
Multiple Devices Simultaneously
• Auto-Increment Allows Writing or Reading
Consecutive Registers Within One Transmission
• Up to 400-kHz Fast-Mode I2C Speed
2 Applications
LED Lighting, Indicator Lights, and Fun Lights for:
• Smart Speaker (With Voice Assistant)
• Smart Home Appliances
• Video Doorbell
• Electronic Smart Lock
• Smoke and Heat Detector
• STB and DVR
• Smart Router
• Handheld Device
3 Description
In smart homes and other applications that utilize
human-machine-interaction, high-performance RGB
LED drivers are required. LED animation effects such
as flashing, breathing, and chasing greatly improve
user experience, and minimal system noise is
essential.
The LP50xx device is an 18- or 24-channel constant
current sink LED driver. The LP50xx device includes
integrated color mixing and brightness control, and
pre-configuration simplifies the software coding
process. Integrated 12-bit, 29 kHz PWM generators
for each channel enable smooth, vivid color for LEDs,
and eliminate audible noise.
PART NUMBER
LP5018
LP5024
Device Information(1)
PACKAGE
BODY SIZE (NOM)
VQFN (32)
4.00 mm × 4.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
MCU
Simplified Schematic
VMCU
VCC
CVCC
CVCAP
RIREF
EN
SDA
SCL
ADDR0
ADDR1
VCAP
VCC
LP5024
OUT0
OUT1
OUT2
OUT21
IREF
GND
OUT22
OUT23
VLED
1
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.

LP5018
LP5018, LP5024
SLVSEB8B – OCTOBER 2018 – REVISED OCTOBER 2018
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Description (continued)......................................... 3
6 Pin Configuration and Functions ......................... 4
7 Specifications......................................................... 6
7.1 Absolute Maximum Ratings ...................................... 6
7.2 ESD Ratings.............................................................. 6
7.3 Recommended Operating Conditions....................... 6
7.4 Thermal Information .................................................. 6
7.5 Electrical Characteristics........................................... 7
7.6 Timing Requirements ................................................ 8
7.7 Typical Characteristics .............................................. 9
8 Detailed Description ............................................ 11
8.1 Overview ................................................................. 11
8.2 Functional Block Diagram ....................................... 11
8.3 Feature Description................................................. 11
8.4 Device Functional Modes........................................ 17
8.5 Programming .......................................................... 18
8.6 Register Maps ........................................................ 22
9 Application and Implementation ........................ 38
9.1 Application Information............................................ 38
9.2 Typical Application ................................................. 38
10 Power Supply Recommendations ..................... 41
11 Layout................................................................... 41
11.1 Layout Guidelines ................................................. 41
11.2 Layout Examples................................................... 42
12 Device and Documentation Support ................. 44
12.1 Related Links ........................................................ 44
12.2 Receiving Notification of Documentation Updates 44
12.3 Community Resources.......................................... 44
12.4 Trademarks ........................................................... 44
12.5 Electrostatic Discharge Caution ............................ 44
12.6 Glossary ................................................................ 44
13 Mechanical, Packaging, and Orderable
Information ........................................................... 45
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision A (October 2018) to Revision B
Page
• Added % after 100 in Parameter for IERR_DD and IERR_CC under OUTPUT STAGE................................................................. 7
• Changed value of "KIREF = 100" to "KIREF = 105" .................................................................................................................. 16
Changes from Original (October 2018) to Revision A
Page
• first release of production-data data sheet ............................................................................................................................. 1
2 Submit Documentation Feedback
Product Folder Links: LP5018 LP5024
Copyright © 2018, Texas Instruments Incorporated


Features Product Folder Order Now Technical Doc uments Tools & Software Support & Com munity LP5018, LP5024 SLVSEB8B – OCT OBER 2018 – REVISED OCTOBER 2018 LP50 xx 18-, 24-Channel, 12-Bit, PWM Ultralo w-Quiescent-Current, I2C RGB LED Driver s 1 Features •1 Operating Voltage Ra nge: – VCC Range: 2.7 V to 5.5 V – EN, SDA, and SCL Pins Compatible With 1 .8-V, 3.3-V, and 5-V Power Rails – Ou tput Maximum Voltage: 6 V • 24 Consta nt-Current Sinks With High Precision 25.5 mA Maximum per Channel With VCC in Full Range – 35 mA Maximum per Cha nnel When VCC ≥ 3.3 V – Device-to-D evice Error: ±7%; Channel-toChannel Er ror: ±7% • Ultralow Quiescent Curren t: – Shutdown Mode: 1 µA (Maximum) W ith EN Low – Power Saving Mode: 10 µ A (Typical) With EN High and All LEDs O ff for > 30 ms • Integrated 12-Bit, 2 9-kHz PWM Generator for Each Channel: Independent Color-Mixing Register Pe r Channel – Independent Brightness-Co ntrol Register Per RGB LED Module – Optional Logarithmic- or Linear-Scale Brightness Control – Integr.
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