KTD2058中文資料芯凱電子數據手冊PDF規(guī)格書

Features

? Drives up to 36 LEDs (12 RGBs)

? Multiplexed LED Current Driver Outputs

? Only 12 PCB Traces to the LEDs

? 23kHz MUX Frequency Prevents Audio Noise

? 14 Million Colors

? LED Current: 125μA to 24mA in 125μA Steps

? Night-Mode: 8μA to 1.5mA in 8μA Steps

? 5 Max. Current Accuracy & Matching

? 36 Independent Exponential Fade-Engines

? Ultra-Smooth 3072-Step Fade Resolution

? 3-bit Programmable Fade Rate

? Dramatically Reduces Software Complexity

? Patented1 BrightExtend? Technology

? Maintains Color-Accuracy and PSRR for Battery-

Powered Applications with Low Vin

? Proprietary CoolExtend? Technology

? 2-bit Programmable Max. Die-Temp Regulation

? 0.4μA Automatic Shutdown (Standby) Current

? 1MHz I2C Interface with Multiple Slave Addresses

? 2.5V to 5.5V Operating Supply Voltage Range

? -40°C to 85°C Operating Temperature Range

? 20 pin UQFN 3x3mm (0.4mm pitch)

? RoHS and Green Compliant

Applications

? AI Smart Speakers, Bluetooth / WiFi Loudspeakers

? Automotive Panel, Accent and Mood Lighting

? IoT, Gaming PC/Keyboards/Controllers/VR, Robots

Brief Description

The KTD2061/58/59/60 are fully programmable current

regulators for up to 12 RGB LED modules (36 LEDs

total). The devices are ideally powered from a supply

rail in the 3V to 5V nominal range. Three 4-wire buses

are multiplexed to reduce the pin-count and PCB traces

to the LEDs.

The I2C control interface is used to set the LED color

palette and then dynamically select the on/off status and

color of each RGB module. For applications requiring

more RGBs on one I2C bus, the KTD2061/58/59/60

have different slave addresses.

36 independent fade-up/down engines are integrated for

independent ramping of each LED’s current during

on/off, brightness, and color transitions without software

burden. The exponential current ramps provide visually

pleasing fades with eight I2C programmable fade-rate

settings. 3072-step fade resolution ensures ultrasmooth

visual effects.

BrightExtend? optionally reduces dropout when the

input voltage is too low for the forward voltage of the

LEDs, enabling battery-powered applications.

Programmable CoolExtend? prevents excessive heat

by regulating die temperature when the input voltage,

current settings, and/or ambient temperature are high.

The KTD2061/58/59/60 are packaged in RoHS and

Green compliant 3mm x 3mm UQFN packages with

0.58mm maximum height.