LP5811DYBHR

Synchronous boost 4-channel RGBW LED driver with I2C and auto animation control

Manufacturer：

Luminary Micro/Texas Instruments

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Manufacturer NO：

LP5811DYBHR

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Product SN：

10509-LP5811DYBHR

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Package/Case：

DSBGA (YBH)-12

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Manufacturer Lead Time：

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Datasheet:

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Detailed Descripition：

Analog/PWM mixed dimming, Constant current, I2C control, LED Open Detection, LED Short Detection, Programmable lighting engines, Thermal shutdown

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Product Application Field：None

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Customer Reference

Quantity

Product price

Qty

Unit Price

Ext Price

1000

$0.5

$500

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Product Description

The LP5811 is a synchronous boost 4-channel RGBW LED driver with autonomous animation engine control. The device is ideal to support battery-powered applications with 0.5V to 5.5V input voltage range, and it has ultra-low normal operation current with 0.4mA (typical) when illuminate LEDs.

The integrated synchronous boost converter maintains excellent efficiency and keeps the brightness of LEDs stable over a wide operating voltage range. Output voltage can be selected for different LED forward voltage from 3V to 5.5V with 0.1V step. The boost converter can power not only the LEDs driven by the device itself, but also other loads in the system. If the boost converter need to be bypassed, VOUT is used as the power supply input for the LED driver blocks.

Both analog dimming and PWM dimming methods are adopted to achieve powerful dimming performance. The output current of each LED can be adjusted with 256 steps from 0.1mA to 25.5mA or 0.2mA to 51mA. The 8-bit PWM generator enables smooth and audible-noise-free dimming control for LED brightness.

The autonomous animation engine can significantly reduce the real-time loading of controller. Each LED can be configured through the related registers to realize vivid and fancy lighting effects. The device can generate 6MHz clock signal and use it for synchronizing the lighting effects among multiple devices.

Operating voltage range:
- Input voltage (V IN) range: 0.5 V to 5.5 V
- 1.8-V minimum input voltage for start-up
- Logic pins compatible with 1.8 V, 3.3 V, and 5 V
High efficiency synchronous boost converter
- Output voltage (V OUT) range: 3 V to 5.5 V
- 140-mΩ (HS) / 60-mΩ (LS) MOSFETs
- 1.6-A valley switching current limit
- 95% efficiency at V IN = 4.2 V, V OUT = 5.0 V, I OUT = 300 mA
- Pass-through mode when VIN > VOUT setting
- True disconnection between input and output during shutdown
4 constant current sinks with high precision:
- 0.1-mA to 51-mA per current sink
- Device-to-device error: max ±5%
- Channel-to-channel error: max ±5%
- Ultra-low headroom voltage: 110 mV (typ.) at 25.5 mA; 210 mV (typ.) at 51 mA
- PWM phase shift configurable for each LED
Ultra-low power consumption:
- Shutdown: I SD = 0.1 µA (typical) when EN = Low
- Standby: I STB = 26 µA (typical) when EN = High and CHIP_EN = 0 (data retained)
- Active: I NOR = 0.45 mA (typical) when LED current = 25.5 mA
Analog dimming (current gain control)
- Global 1-bit Maximum Current (MC): 25.5 mA or 51 mA
- Individual 8-bit Dot Current (DC) setting
PWM dimming up to audible-noise-free 24 kHz
- Individual 8-bit PWM dimming resolution
- Linear or exponential dimming curves
Autonomous animation engine control
Individual LED dot open/short detection
Integrated de-ghosting function
1-MHz (max.) I 2C interface
–40°C to 85°C operating temperature range