LP5569RTWR Clock Timer ICS LED LED Lighting Drivers Nine-Channel I2C RGB LED Driver

1 Features

• Supply Voltage Range: 2.5 V–5.5 V

• Nine High-Accuracy Current Sinks

  • – 25.5 mA Maximum per Channel

  • – 8-Bit Individual Current Control

  • – 12-Bit 20-kHz Internal Individual PWM Control Without Audio Noise

• Three Programmable LED Engines

  • – Independent Illumination Control Without Active Microcontroller Control

  • – Synchronization Among Multiple Devices

  • – Up to 256 Instructions in SRAM Memory for Storing Sequences of Lighting Patterns

  • – LP5523- and LP55231-Device-Compatible Command Set

• Flexible Dimming Control

  • – I2C Dimming Control

  • – PWM Direct-Input Dimming

  • – PWM Input Frequency: 100-Hz to 20-kHz

• Adaptive High-Efficiency Charge-Pump Control for Driving High-VF LEDs With Low Battery Voltage

• Master Fader Control Allows Dimming of Multiple LEDs by Writing to Only One Register to Reduce the I2C Bus Traffic

• 2-μA Low Standby Current and 10-μA in Automatic Power-Save Mode When LEDs Are Inactive

• POR, UVLO, and TSD Protection

   

2 Applications

LED Lighting, Indicator Lights, and Fun Lights for:

• Smart Speaker

• Smart Home Appliance

• Doorbell

• Electric Lock

• Smoke Detector

• Thermostat

• Set-Top Box

• Smart Router

• Bluetooth® Headset

• Cell Phone

3 Description

The LP5569 device is a programmable, easy-to-use 9-channel I2C LED driver designed to produce lighting effects for various applications. The LED driver is equipped with an internal SRAM memory for user- programmed sequences and three programmable LED engines, which allow operation without processor control. Autonomous operation reduces system power consumption when the processor is put in sleep mode.

A high-efficiency charge pump enables the driving of LEDs with high VF, even with 2.5-V input voltage. The LP5569 LED driver maintains good efficiency over a wide operational voltage range by autonomously selecting the best charge-pump gain based on LED forward voltage requirements.

The LP5569 device enters power-save mode when LEDs are not active, lowering idle-current consumption considerably. A flexible digital interface allows the connection of up to eight LP5569 devices with a unique I2C slave address for each device in the same system, which supports synchronization of the lighting effects among all devices.

Device Information