LP5892QRRFRQ1中文资料德州仪器数据手册PDF规格书

1 Features

• AEC-Q100-qualified for automotive applications:

– Temperature grade 1: –40°C to +125°C, TA

• Separated VCC and VR/G/B power supply

– VCC voltage range: 2.5V – 5.5V

– VR/G/B voltage range: 2.5V – 5.5V

• 48 current source channels from 0.2mA to 40mA

– Channel-to-channel accuracy: ±0.5% (typ.),

±3% (max.); device-to-device accuracy: ±0.5%

(typ.), ±2.5% (max.)

– Low knee voltage: 0.27V (max.) when IOUT =

5mA

– 3-bits (8 steps) global brightness control

– 8-bits (256 steps) color brightness control

– Maximum 16-bits (65536 steps) PWM

grayscale control

• 16 scan line switches with 190mΩ RDS(ON)

• Ultra-low power consumption

– Independent VCC down to 2.5V

– Lowest ICC down to 3.6mA with 50MHz GCLK

– Intelligent power saving mode with ICC down to

0.9mA

• Built-in SRAM to support 1–64 multiplexing

– Single device to support 48 × 16 LEDs or 16 ×

16 RGB pixels

– Dual devices stackable to support 96 × 32

LEDs or 32 × 32 RGB pixels

• High speed and low EMI Continuous Clock Series

Interface (CCSI)

– Only three wires: SCLK / SIN / SOUT

– External 50MHz (max.) SCLK with rising-edge

transmission mechanism

– Internal frequency multiplier to support high

frequency GCLK

• Optimized performances for LED matrix displays

– Upside and downside ghosting removal

– Low grayscale enhancement

– LED open, weak-short, short detection and

removal

2 Applications

• Automotive interior light

• Automotive rear light

• Automotive front light

• Automotive local dimming backlight

3 Description

The LP5892-Q1 is a highly integrated common

cathode matrix LED display driver with 48 constant

current sources and 16 scanning FETs. One LP5892-

Q1 supports to drive 16 × 16 RGB pixels and two

LP5892-Q1 devices support to drive 32 × 32 RGB

pixels. To achieve low power consumption, the device

supports separated power supplies for the red, green,

and blue LEDs by its common cathode structure.

Furthermore, the operation power of the LP5892-Q1

is significantly reduced by ultra-low operation voltage

range (Vcc down to 2.5V) and ultra-low operation

current (Icc down to 3.6mA).

The LP5892-Q1 implements a high speed rising-edge

transmission interface to support high device count

daisy-chained and high refresh rate while minimizing

electrical-magnetic interference (EMI). The device

supports up to 50MHz SCLK (external) and up to

160 MHz GCLK (internal). Meanwhile, the device

integrates enhanced circuits and intelligent algorithms

to solve the various display challenges in Narrow

Pixel Pitch (NPP) LED display applications and mini

and micro-LED products: dim at the first scan line,

upper and downside ghosting, non-uniformity in low

grayscale, coupling, caterpillar caused by open or

short LEDs, which make the LP5892-Q1 a perfect

choice in such applications.

The LP5892-Q1 also implements LED open/weak

short/short detections and removals during operations

and can also report those information out to the

accompanying digital processor.