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LT1932ES6

厂商:
Linear
类别:
LED驱动器
包装:
-
封装:
SOT
无铅情况/ROHS:
-
描述:
Constant-Current DC/DC LED Driver...

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  • 参数
  • 描述
  • 文档
参数 数值
Number of Outputs 1
Vin Min (V) 1
Vin Max (V) 10
Switch Current (A) 0.55 (0.4)
Vout Max (V) 36
Max Number of LEDs (#) 8
Topology Boost, LED Driver
Packages ThinSOT
Monolithic (yes/no) yes
Frequency (kHz) 1200
Ishutdown (uA) 1
Isupply (mA) 1.2
Synchronous (yes/no) no
Dimming PWM, Analog
Architecture Average Output Current Control
Features Output Disconnect
Extended Temp E
Comments Low Noise, 80% Efficiency, Ideal for 4-6 LEDs
Featured no
Date Added 1984-01-01
Price 1k * $1.83 (LT1932ES6#TRMPBF)
New no

特点
Up to 80% Efficiency
Inherently Matched LED Current
Drives Five White LEDs from 2V
Drives Six White LEDs from 2.7V
Drives Eight White LEDs from 3V
Adjustable Control of LED Current
Disconnects LEDs In Shutdown
1.2MHz Fixed Frequency Switching
Uses Tiny Ceramic Capacitors
Uses Tiny 1mm-Tall Inductors
Regulates Current Even When V IN > V OUT
Operates with V IN as Low as 1V
Low Profile (1mm) ThinSOT? Package

典型应用

典型应用

描述
With an input voltage range of 1V to 10V, the device works from a variety of input sources. The LT1932 accurately regulates LED current even when the input voltage is higher than the LED voltage, greatly simplifying battery-powered designs. A single external resistor sets LED current between 5mA and 40mA, which can then be easily adjusted using either a DC voltage or a pulse width modulated (PWM) signal. When the LT1932 is placed in shutdown, the LEDs are disconnected from the output, ensuring a quiescent current of under 1μA for the entire circuit. The device’s 1.2MHz switching frequency permits the use of tiny, low profile chip inductors and capacitors to minimize footprint and cost in space-conscious portable applications.

LT Journal
文档名称 文档类型 软件 描述
LT1932ES6PDF下载 点击下载 点击下载 March 2009 - 1.2A Monolithic Buck Regulator Shrinks Supply Size and Cost with Programmable Output Current Limit
LT1932ES6PDF下载 点击下载 点击下载 June 2008 - Speed Up Li-ion Battery Charging and Reduce Heat with a Switching PowerPath Manager
数据表 (英文)
文档名称 文档类型 软件 描述
LT1932ES6PDF下载 点击下载 点击下载 LTC4098/LTC4098-1 - USB Compatible Switching Power Managers/Li-Ion Chargers with Overvoltage Protection
设计要点 (英文)
文档名称 文档类型 软件 描述
LT1932ES6PDF下载 点击下载 点击下载 DN464 - High Efficiency USB Power Management System Safely Charges Li-Ion/Polymer Batteries from Automotive Supplies
设计要点 (中文)
文档名称 文档类型 软件 描述
LT1932ES6PDF下载 点击下载 点击下载 DN464 - 高效率 USB 电源管理系统从汽车电源安全地给锂离子/锂聚合物电池充电
可靠性数据
文档名称 文档类型 软件 描述
LT1932ES6PDF下载 点击下载 点击下载 R540 - Reliability Data
产品新闻发布 (中文)
文档名称 文档类型 软件 描述
LT1932ES6PDF下载 点击下载 点击下载 LTC4098 - 高效率 USB 电源管理器和锂离子电池充电器,从 USB 端口向系统负载提供 700mA 电流以及具过压保护