LTM8042

μModule 升压型 LED 驱动器和电流源

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量产

顶部

概览

优势和特点
产品详情

优势和特点

具 3000:1 调光比的 True Color PWM^™
可在升压、降压或降压-升压模式中运作
宽输入电压范围：
- 工作于 3V 至 30V
- 瞬态电压保护至 40V
栅极驱动器利用 P 沟道 MOSFET 来实现任选的 PWM 调光
可调频率：250kHz 至 2MHz
恒定电流和恒定电压调节
低停机电流：<1μA
具有金制衬垫涂层并符合 RoHS 标准的封装
纤巧、扁平的 (9mm x 15mm x 2.82mm) 表面贴装型 LGA 封装

产品详情

LTM^®8042 是一款完整的 μModule^® 升压型 LED 驱动器，专为驱动高达 1A 的 LED 而设计，LTM8042-1 则为驱动高达 350mA 的 LED 而设计。该器件实现了升压型电源拓扑结构与独特电流环路的整合，以充当一个恒定电流源。PWM 输入可提供高达 3000:1 的 LED 调光，而 10:1 的模拟调光则可通过单个电阻器或施加在 CTL 引脚上的模拟电压来实现。与所有的升压型拓扑结构一样，LTM8042 / LTM8042-1 在其输入和输出之间具有一条不间断的电流通路，因而不能容许发生从输出至地的短路或过载状况。


# WHITE LEDS	LED CURRENT	12V_IN	24V_IN
6	1A	LTM8042
7	350mA	LTM8042-1
8	1A		LTM8042
9	350mA		LTM8042-1

LTM8042 / LTM8042-1 采用耐热增强型紧凑模压焊盘网格阵列 (LGA) 封装。LTM8042 / LTM8042-1 是符合无铅和 RoHS 标准。

Applications

显示器背面照明
汽车和航空电子设备照明
照明
扫描仪

产品分类

电源管理

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产品生命周期量产

该产品系列中至少有一个型号已量产并可供采购。该产品适合用于新设计，但也可能有更新的替代产品。

评估套件 (2)

DC1511A-B

LTM8042EV-1 Demo Board | µModule Boost LED Driver, 3V ≤ V_IN ≤ 30V, V_OUT up to 32V @ 350mA

DC1511A-A

LTM8042EV Demo Board | µModule Boost LED Driver, 3V ≤ V_IN ≤ 30V, V_OUT up to 32V @ 1A

DC1511A-B

查看此评估套件详细信息

Demonstration circuits 1511A-B features the LTM8042-1, which is a complete 350mA µModule LED driver. The demonstration circuit is configured using the boost topology, accepting an input voltage from 3V to 30V and supporting an output up to 32V. The default switching frequency is 950kHz for the DC1511A-B, but can be adjusted by changing the value of the RT resistor. DC1511A is easily configured to support other features, including PWM dimming and analog dimming; It also supports buck-boost mode and buck mode (step-down) topologies.

DC1511A-A

查看此评估套件详细信息

Demonstration circuits 1511A-A features the LTM8042, which is a complete 1A µModule LED driver. The demonstration circuit is configured using the boost topology, accepting an input voltage from 3V to 30V and supporting an output up to 32V. The default switching frequency is 600kHz for the DC1511A-A, but can be adjusted by changing the value of the RT resistor. DC1511A is easily configured to support other features, including PWM dimming and analog dimming; It also supports buck-boost mode and buck mode (step-down) topologies.