LP5569RTWR 9 CHANNEL RGB DRIVER

The LP5569RTWR  is a programmable, easy-to-use 9  -channel I²C  LED driver that may be used to create various lighting effects. The LED driver includes an internal SRAM memory for user-programmed sequences as well as three programmable LED engines for operation without the usage of a processor. When the processor is put into sleep mode, autonomous functioning minimizes system power usage.

Even with a 2.5  -V input voltage, a high-efficiency charge pump can drive LEDs with high VF. By autonomously selecting the appropriate charge-pump gain depending on LED forward voltage needs, the LP5569RTWR   LED driver maintains good efficiency throughout a wide operating voltage range. When LEDs are not active, the LP5569RTWR  gadget enters power-saving mode, significantly reducing idle-current usage.

• 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 LP5523  1-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 MultipleLEDs 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  AreInactive

• POR, UVLO, and TSD Protections 

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Texas Instruments Incorporated (TI) is an American technology company based in Dallas, Texas, that designs and manufactures semiconductors and integrated circuits for electronic designers and manufacturers around the world. Based on sales volume, it is one of the top ten semiconductor companies in the world. Analog chips and embedded processors, which account for more than 80  % of the company's revenue, are the company's main focus. TI also makes calculators, microcontrollers, and multi-core processors, as well as TI digital light processing technology and education technology,  As of 2016, the company had 45,000  patents worldwide.

1. Current Sinks

The LP5569RTWR   LED drivers are constant-current sources. Maximum output-current scale can be programmed by control registers up to 25.5 mA.

2. Charge Pump

The LP5569RTWR  device includes a pre-regulated switched-capacitor charge pump with a programmable voltage multiplication of 1× or 1.5×.

3. Energy Efficiency

The red LED  (R) element of an RGB LED  typically has a forward voltage of about 2 V. these LED s can be powered directly from the input voltage because battery voltage is typically high enough to drive red LED  s over the whole operating voltage range.

4. Automatic Power-Save Mode

When the LED  outputs are not active, the LP5569RTWR  device is able to enter power-save mode automatically, thus lowering idle-current consumption down to TBD μA (typical). Automatic power-save mode is enabled when the MISC register (address 2Fh) POWERSAVE_EN bit = 1.

5. Protection Features

It has four protection features, including Thermal Shutdown, Undervoltage Lockout  (UVLO), Power-On Reset  (POR), LED  Fault Detection

6. Clock Generation and Synchronization 

The LP5569RTWR  device can generate a 32-kHz clock signal and use it for synchronizing multiple devices. The CLK pin is configured as an input by default