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LP5813 Datasheet(PDF) 1 Page - Texas Instruments |
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LP5813 Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 60 page  LP5813 Synchronous Boost 4 × 3 Matrix RGB LED Driver With Autonomous Control 1 Features • Operating voltage range: – Input voltage (VIN) 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 (VOUT) range: 3 V to 5.5 V – 140-mΩ (HS) / 60-mΩ (LS) MOSFETs – 1.6-A valley switching current limit – 95% efficiency at VIN = 4.2 V, VOUT = 5.0 V, IOUT = 300 mA – Pass-through mode when VIN > VOUT setting – True disconnection between input and output during shutdown • Time-cross-multiplexing (TCM) topology: – Drives up to 12 LEDs or 4 RGB LEDs – ¼, ⅓, ½, 1 multiplexing ratio – Supports direct, TCM, and mix-drive modes • 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: ISD = 0.1 μA (typical) when EN = Low – Standby: ISTB = 26 μA (typical) when EN = High and CHIP_EN = 0 (data retained) – Active: INOR = 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.) I2C interface • –40°C to 85°C operating temperature range 2 Applications LED animation and indication for: • Portable and wearable electronics - earbud and charging case, E-cigarette, smart watch • Gaming and home entertainment - smart speaker, RGB mouse, VR headset and controller • Internet-of-Things (IOT) - E-tag, video doorbell • Networkings - router, access point • Industrial HMI - EV charger, factory automation 3 Description The LP5813 is a synchronous boost 4 × 3 matrix RGB LED driver with autonomous animation engine control. The device is ideal to support battery-powered applications with 0.5-V to 5.5-V input voltage range, and it has ultra-low normal operation current with 0.4- mA (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 3 V to 5.5 V with 0.1-V 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. The time-cross-multiplexing (TCM) structure is adopted, which uses 4 output pins to control 12 LED dots individually. Both high-side scan switch and low- side current sink are contained in one output. The total solution size are minimized for space limited system. 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 6-MHz clock signal and use it for synchronizing the lighting effects among multiple devices. Package Information PART NUMBER PACKAGE BODY SIZE (NOM) LP5813 DSBGA (12) 1.84 mm × 1.43 mm WSON (12)(1) 3 mm × 3 mm (1) Product Preview LP5813 OUT0 OUT1 OUT2 SW OUT3 22 uF 10 uF 1 uH 0.5 V - 5.5 V GND OFF ON VIN EN SCL SDA SYNC VOUT MCU V MCU D0 D1 D2 D3 Red LED Green LED Blue LED 4.7k Ω 4.7k Ω Simplified Schematic LP5813 SNVSC74 – SEPTEMBER 2023 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. |
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