LP5036 36-Channel I2C Constant Current RGB LED Driver | TI.com

LP5036 (PREVIEW)

36-Channel I2C Constant Current RGB LED Driver

 

Sample Availability

Prototype samples are available (PLP5036RJVR). Order Now

Description

Efficient and high-performance LED response effects, such as blinking, breathing, and chasing, are critical to improving end-user experience in many human machine interface (HMI) applications.

The LP503x device is a 30- or 36-channel constant-current-sink LED driver. The LP503x has a 29 kHz, 12-Bit PWM generator for each channel, as well as channel/module independent color mixing and intensity control, formerly called brightness control registers to enable vivid LED effects with zero audible noise. Users can benefit from the device’s ultra-low shutdown Iq Power Saving Mode, while designers will appreciate the incredibly straightforward software coding of the LP503x’s three programmable R G B banks.

The LP503x device controls each LED output with a 12-bit PWM resolution at 29-kHz switching frequency. This control helps get an intensity that decreases smoothly and stops audible noise. Having different color-mixing and intensity-control registers makes writing the software code straightforward. When targeting fade-in, fade-out type breathing effects, the global R, G, B bank control reduces the microcontroller loading significantly. The LP503x device also implements a PWM phase-shifting function to help reduce the input power budget when LEDs turn on simultaneously.

The LP503x device has an automatic power-saving mode to get the ultra-low quiescent current. When channels are all off for 30 ms, the device total power consumption is down to 10 µA, making the LP503x device a possible alternative for battery-powered end equipment.

Features

  • 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
  • 36 Constant-Current Sinks With High Precision
    • 25.5 mA Maximum per Channel When VCC in Full Range
    • 35 mA Maximum per Channel When VCC ≥ 3.3 V
    • Device-to-Device Error ±5%; Channel-to-Channel Error ±5%
  • Ultralow Quiescent Current:
    • Shutdown Mode: 1 µA (Maximum) When EN Low
    • Power Saving Mode: 10 µA (Maximum) When 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-Shifting PWM 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

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Parametrics Compare all products in RGB & white LED drivers

 
Channels (#)
LED current per channel (mA)
LED configuration
LED (#)
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Iout (Max) (A)
Iq (Typ) (mA)
Shutdown Current (Typ) (uA)
Features
Operating temperature range (C)
Package Group
Package size: mm2:W x L (PKG)
LP5036 LP5018 LP5024 LP5030
36     18     24     30    
  35     35      
  Parallel     Parallel      
36     18     24     30    
2.7     2.7     2.7     2.7    
5.5     5.5     5.5     5.5    
  2.7     2.7      
6     5.5     5.5     6    
0.035     0.63     0.84      
0.01     0.01     0.01     0.01    
1     0.2     0.2     1    
Constant Current
Current Control
I2C Control
Power Save Mode    
Constant Current
Current Control
I2C Control
Power Save Mode    
Constant Current
Current Control
I2C Control
Power Save Mode    
Constant Current
Current Control
I2C Control
Power Save Mode    
-40 to 125     -40 to 125     -40 to 85     -40 to 125    
VQFN | 46     VQFN | 32     VQFN | 32     VQFN | 46    
46VQFN: 30 mm2: 5 x 6 (VQFN | 46)     32VQFN: 16 mm2: 4 x 4 (VQFN | 32)     32VQFN: 16 mm2: 4 x 4 (VQFN | 32)     46VQFN: 30 mm2: 5 x 6 (VQFN | 46)