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LINEAR TECHNOLOGY  LT3475EFE#PBF  发光二极管驱动器, 2输出, 降压(逐步下降), 4V-36V输入, 2MHz开关, 15V/1.5A输出, TSSOP-20

LINEAR TECHNOLOGY LT3475EFE#PBF
Technical Data Sheet (243.15KB) EN 查看所有技术文档

图片仅用于图解说明,详见产品说明。

产品概述

The LT3475EFE#PBF is a dual step-down DC/DC Converter designed to operate as a constant-current source. An internal sense resistor monitors the output current allowing accurate current regulation ideal for driving high current LEDs. The high-side current sense allows grounded cathode LED operation. High output current accuracy is maintained over a wide current range, from 50mA to 1.5A, allowing a wide dimming range. Unique PWM circuitry allows a dimming range of 3000:1, avoiding the colour shift normally associated with LED current dimming. The high switching frequency offers several advantages, permitting the use of small inductors and ceramic capacitors. The constant switching frequency combined with low-impedance ceramic capacitors result in low, predictable output ripple. With its wide input range of 4 to 36V, the LT3475 regulates a broad array of power sources. Current mode PWM architecture provides fast transient response and cycle-by-cycle current limiting.
  • High-side current sense allows grounded cathode LED operation
  • Open LED and short-circuit protection
  • Anti-phase switching reduces ripple
  • Uses small inductors and ceramic capacitors

产品信息

设备拓扑:
降压 (降压)
输出数:
2输出
输出电流:
1.5A
输出电压:
15V
驱动器封装类型:
TSSOP
针脚数:
20引脚
输入电压最小值:
4V
输入电压最大值:
36V
开关频率:
2MHz
工作温度最小值:
-40°C
工作温度最高值:
85°C
封装:
每个
产品范围:
-
汽车质量标准:
-
MSL:
MSL 1 -无限制
SVHC(高度关注物质):
No SVHC (17-Dec-2015)

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应用

  • 车用;
  • 航空电子;
  • 发光二极管照明

法律与环境

潮湿敏感级别:
MSL 1 -无限制
原产地:
Malaysia

进行最后一道重要生产流程所在的国家

RoHS 合规:
税则号:
85423990
重量(千克):
.0002