LT3492

所属类别：LED驱动
产品名称：具 3000:1 PWM 调光比的三通道输出 LED 驱动器
厂商：LT
生产批号：11+
封装：QFN-28, TSSOP-28
库存状态：有库存
库存量：1000
最低订购量：1
详细资料：

Product Introduction

The LT3492 features a triple-channel output LED driver with a 3000:1 PWM dimming ratio

peculiarity

True Color PWM^TM 调光可提供高达 3000:1 的调光比
用于 PMOS LED 断接的内置栅极驱动器
具 600mA、60V 内部开关的三个独立驱动器通道
可工作于降压、升压、降压-升压模式
CTRL 引脚可在 10mV 至 100mV 的范围内准确地设定 LED 电流检测门限
可调频率：330kHz 至 2.1MHz
开路 LED 保护
宽输入范围：
工作电压范围为 3V 至 30V
瞬变保护至 40V
表面贴装型组件
28 引脚 (4mm x 5mm) QFN 和 TSSOP 封装

description

®The LT 3492 is a three-channel output DC/DC converter designed to be used as a constant current source, making it ideal for driving LEDs. The LT3492 can operate in buck, boost, or buck-boost modes. The LT3492 uses a constant frequency, current-mode architecture that enables stable operation over a wide range of supply and output voltages. A frequency regulation pin allows users to set the switching frequency in the range of 330kHz to 2.1MHz to optimize efficiency and external component size.

An external PWM input provides 3000:1 LED dimming control on each channel. All three channels have a built-in gate driver to drive an external LED disconnected P-channel MOSFET, providing a high dimming range. The output current range of the LT3492 per channel is set using an external sense resistor.

The CTRL pin is used to regulate the LED current for analog dimming or overheating protection.

apply

RGB 照明
广告牌和大型显示器
汽车和航空电子照明
恒定电流源

The ICs associated with the LT3492 include:

Model	Manufacturers	lot number	encapsulation	illustrate
LT3492	LT	11+	QFN-28, TSSOP-28	Triple output LED driver with 3000:1 PWM dimming ratio
LM3492QMH/NOPB		10+11+		Hong Kong spot, imported original
MC34922PN8	FREESCALE	Current updates	QFN	Brand new original
TLV3492AIDCNT	TI	06+	SOT23-8	Dual low-power push-pull output comparators
LM3492MH/NOPB	National	10+	TSSOP-20	LED drivers
TLV3492A-EP	TI	10+	8SOIC	Enhanced product 1.8 V nanowatt power push-pull output comparator
TLV3492	TI	10+	8SOIC, 8SOT-23	Dual nanowatt power push-pull output comparator

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