LM3549SQ/NOPB 供应商
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LM3549SQ/NOPB
品牌：TI 封装/批号：原厂原装/22+ -
LM3549SQ/NOPB
品牌：TI(德州仪器) 封装/批号：WQFN-24/2022+
LM3549SQ/NOPB 属性参数
- 制造商：National Semiconductor (TI)
- 封装：Reel
- 工厂包装数量：1000
产品特性
- Over-Current Protection
- Over-Temperature Protection
- I2C Compatible Interface
- Under-Voltage Lockout
- LED Open and Short Protection and Detection
- 95% Peak Efficiency Buck-Boost Converter
- NVM Memory for Calibration Data and Standalone Usage without I2C Control
- Soft Start
- Integrated buck-boost Converter
- Programmable LED Drivers
- 700 mA Maximum Drive Current
- ±6% Current Accuracy Over Temperature
- 24-pin WQFN Package
产品概述
The LM3549 is a high power LED driver with up to 700mA output current. It has three
constant current LED drivers and a buck boost SMPS for driving RGB LEDs with high efficiency. LED
drivers are designed for sequential drive so only one driver can be enabled at a time.
LED driver output current settings can be stored to integrated non-volatile memory which
allows stand-alone operation without I2C interface. Non-volatile memory
is rewritable so current setting can be changed if needed. The LM3549 has a fault detection feature that can detect several different fault
conditions. In case of a fault error flags are set and FAULT output sends interrupt to control
logic. Error flags can be read through I2C interface.Total brightness can be controlled with PWM input or with master fader register if
I2C interface is used.
LM3549SQ/NOPB 电路图
