IS31FL3747数据手册Lumissil中文资料规格书

描述 Description

The IS31FL3747 is a general purpose 12 × n (n=1~12) LED Matrix programmed via 12MHz SPI or 30MHz VSB compatible interface. Each LED can be dimmed individually with 8-bit PWM or 12-bit PWM data and 8- bit DC scaling data which allowing 256 steps or 4096 steps of linear PWM dimming and 256 steps of DC current adjustable level.

Additionally, each LED open and short state can be detected, IS31FL3747 store the open or short information in Open-Short Registers. The Open-Short Registers allowing MCU to read out via VSB or SPI interface, inform MCU whether there are LEDs open or short and the locations of open or short LEDs.

The IS31FL3747 operates from 2.7V to 5.5V and features a very low shutdown and operational current.

IS31FL3747 is available in QFN-40 (5mm×5mm) package. It operates from 2.7V to 5.5V over the temperature range of -40°C to +125°C.

特性 Features

• Supply voltage range: 2.7V to 5.5V
• Support 12 × n (n=1~12) LED matrix configurations
• Dual IS31FL3747 cascade connection support 24 × n (n=1~24) LED matrix configurations.
• Individual 12-bit, 8-bit and 8+4-bit PWM control steps
• Individual 8-bit DC current steps
• Global 8-bit current setting
• Maximum 32MHz with spread spectrum (SSP).
• 12MHz SPI or 30MHz VSB
• State lookup registers
• Individual open and short detect function
• 180-degree phase delay operation to reduce power noise
• De-Ghost
• ±7.5% (Max.) at 47.8mA channel to channel matching
• ±4% (Max.) at 47.8mA device to device accuracy
• Operating temperature: -40°C to 125°C
• QFN-40 (5mm×5mm) package

应用 Application

• LED display for hand-held devices
• Gaming device (Keyboard, mouse etc.)
• LED in white goods application