LM3554TMX/NOPB

具有 1.2A 双路高侧 LED 驱动器和 I2C 兼容接口的同步升压转换器 16-DSBGA -30 to 85

LED Driver IC 2 Output DC DC Regulator Step-Up Boost I²C Dimming 600mA Flash 16-DSBGA

得捷:
IC LED DRVR RGLTR I2C 16DSBGA

立创商城:
LM3554TMX/NOPB

德州仪器TI:
Synchronous boost converter with 1.2A dual high side LED driver and I2C compatible interface

艾睿:
LED Driver 2 Segment 2700uA Supply Current 16-Pin DSBGA T/R

安富利:
The LM3554 is a 2MHz fixed frequency, current mode synchronous boost converter. The device is designed to operate as a dual 600mA 1.2A total constant-current driver for high-current white LEDs, or as a regulated 4.5V or 5V voltage source. The dual high-side current sources allow for grounded cathode LED operation. An adaptive regulation method ensures the current source for each LED remains in regulation and maximizes efficiency. The main features include: an I2C-compatible interface for controlling the LED current or the desired output voltage, a hardware Flash enable input for direct triggering of the Flash pulse, and dual TX inputs which force the Flash pulse into a low-current Torch mode allowing for synchronization to RF power amplifier events or other high-current conditions. Additionally, an active high hardware enable HWEN input provides a hardware shutdown during system software failures.Five protection features are available within the LM3554 including a software selectable input voltage monitor, an internal comparator for interfacing with an external temperature sensor, four selectable current limits to ensure the battery current is kept below a predetermined peak level, an over-voltage protection feature to limit the output voltage during LED open circuits, and an output short circuit protection which limits the output current during shorts to GND. Additionally, the device provides various fault indicators including: a thermal fault flag indicating the LED temperature has tripped the thermal threshold, a flag indicating a TX event has occurred, a flag indicating the flash timeout counter has expired, a flag indicating the devices die temperature has reached the thermal shutdown threshold, and a flag indicating an open or short LED.

Chip1Stop:
LED DRVR 2Segment 3.3V/5V 16-Pin uSMD T/R

Verical:
LED Driver 2 Segment 2700uA Supply Current 16-Pin DSBGA T/R

DeviceMart:
IC LED DVR PHOTO FLASH 16-USMD

Win Source:
LED Driver IC 2 Output DC DC Regulator Step-Up Boost I2C Dimming 600mA Flash 16-DSBGA