LT3494是Micropower Low Noise Boost Converters with Output Disconnect

Linear（凌力尔特）| Linear产品型号搜索

当前位置：Linear公司 > > 凌力尔特芯片 >> LT3494

LT3494技术文档下载：

LT3494 - 典型应用图例：

LT3494 - 封装图解：

LT3494 - LT3494是Micropower Low Noise Boost Converters with Output Disconnect

LT3494是Linear公司的一款LCD / CCD / OLED 偏置产品，LT3494是Micropower Low Noise Boost Converters with Output Disconnect，本站介绍了LT3494的封装应用图解、特点和优点、功能等，并给出了与LT3494相关的凌力尔特元器件型号供参考。

LT3494 - Micropower Low Noise Boost Converters with Output Disconnect

LT3494 - Micropower Low Noise Boost Converters with Output Disconnect - Linear Technology（凌力尔特）

功能描述

The LT3494/LT3494A are low noise boost converters with integrated power switch, Schottky diode and output disconnect circuitry. The parts use a novel* control technique resulting in low output voltage ripple as well as high ef? ciency over a wide load current range. This technique guarantees that the switching frequency stays above the audio band for the entire load range. The parts feature a high performance NPN power switch with a 350mA and 180mA current limit for the LT3494A and LT3494 respectively. The quiescent current is a low 65µA, which is further reduced to less than 1µA in shutdown. The internal disconnect circuitry allows the output voltage to be isolated from the input during shutdown. An auxiliary reference input (CTRL pin) overrides the internal 1.225V feedback reference with any lower value allowing full control of the output voltage during operation. The LT3494/LT3494A are available in a tiny 8-lead 3mm x 2mm DFN package.

特点

Low Quiescent Current 65µA in Active Mode 1µA in Shutdown Mode

Switching Frequency is Non-Audible Over Entire Load Range

Integrated Power NPN: 350mA Current Limit (LT3494A) 180mA Current Limit (LT3494)

Integrated Schottky Diode

Integrated Output Disconnect

Integrated Output Dimming

Wide Input Range: 2.3V to 16V

Wide Output Range: Up to 40V

Tiny 8-Lead 3mm x 2mm DFN Package

应用

OLED Power

Low Noise Power

MP3 Players

以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格（美元）

器件型号	封装	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量)
LT3494AEDDB	3x2 DFN-8	E	$2.07
LT3494AEDDB#PBF	3x2 DFN-8	E	$2.07
LT3494AEDDB#TR	3x2 DFN-8	E	$2.07	$1.45
LT3494AEDDB#TRM	3x2 DFN-8	E	$2.07	$1.50
LT3494AEDDB#TRMPBF	3x2 DFN-8	E	$2.07	$1.50
LT3494AEDDB#TRPBF	3x2 DFN-8	E	$2.07	$1.45
LT3494EDDB	3x2 DFN-8	E	$2.07
LT3494EDDB#PBF	3x2 DFN-8	E	$2.07
LT3494EDDB#TR	3x2 DFN-8	E	$2.07	$1.45
LT3494EDDB#TRM	3x2 DFN-8	E	$2.07	$1.50
LT3494EDDB#TRMPBF	3x2 DFN-8	E	$2.07	$1.50
LT3494EDDB#TRPBF	3x2 DFN-8	E	$2.07	$1.45