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LP5030 数据表(PDF) 3 Page - Texas Instruments |
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LP5030 数据表(HTML) 3 Page - Texas Instruments |
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3 / 62 page  3 LP5030, LP5036 www.ti.com SLVSEH1B – SEPTEMBER 2018 – REVISED JANUARY 2019 Product Folder Links: LP5030 LP5036 Submit Documentation Feedback Copyright © 2018–2019, Texas Instruments Incorporated 5 Description (continued) The LP503x device controls each LED output with a 12-bit PWM resolution at 29-kHz switching frequency. This control helps get an intensity that decreases smoothly and stops audible noise. Having different color-mixing and intensity-control registers makes writing the software code straightforward. When targeting fade-in, fade-out type breathing effects, the global R, G, B bank control reduces the microcontroller loading significantly. The LP503x device also implements a PWM phase-shifting function to help reduce the input power budget when LEDs turn on simultaneously. The LP503x device has an automatic power-saving mode to get the ultra-low quiescent current. When channels are all off for 30 ms, the device total power consumption is down to 10 µA, making the LP503x device a possible alternative for battery-powered end equipment. |
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