參數(shù)資料
型號(hào)： A8438EEJTR-T
廠(chǎng)商： Allegro MicroSystems, Inc.
英文描述： Photoflash Capacitor Charger with IGBT Driver
中文描述： 照相閃光燈電容充電器采用IGBT驅(qū)動(dòng)器
文件頁(yè)數(shù)： 10/13頁(yè)
文件大?。?/td> 528K
代理商： A8438EEJTR-T
A8438-DS, Rev. 1
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
Photoflash Capacitor Charger with IGBT Driver
A8438
10
When the A8438 charges a fully-discharged photoflash capacitor,
I
Secondary
decreases very slowly due to the low initial V
OUT
. The
A8438 internal timer (Timer mode) sets a maximum timeframe of
18
μ
s for the off-time as long as the SW node voltage is greater
than 1.2 V. When the off-time passes 18
μ
s, the internal MOSFET
switch is turned on, initiating the next charging cycle .
Input Current Limiting
The peak input current, I
SWLIM
, can be set to three levels by
configuring the ILIM pin:
I
SWLIM
Setting
(A)
1.6
1.8
ILIM Pin
Connection
External ground
Float
Pull up to IC supply voltage
with a 1 to 10 k
Ω
resistor
2.0
Lower input current offers the advantage of a longer battery
lifetime. For faster charging time, however, use the highest
current limit. I
SWLIM
may be adjusted during charging.
相關(guān)PDF資料
PDF描述
A8439 Photoflash Capacitor Charger with IGBT Driver and Refresh
A8439EEJTR-T Photoflash Capacitor Charger with IGBT Driver and Refresh
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
A8439 制造商:ALLEGRO 制造商全稱(chēng):Allegro MicroSystems 功能描述:Photoflash Capacitor Charger with IGBT Driver and Refresh
A8439EEJTR-T 功能描述:IC CHARGER PHOTO FLASH 10-MLP RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 電源管理 - 專(zhuān)用 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 應(yīng)用:手持/移動(dòng)設(shè)備 電流 - 電源:- 電源電壓:3 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:14-WFDFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:14-LLP-EP（4x4） 包裝:Digi-Reel® 配用:LP3905SD-30EV-ND - BOARD EVALUATION LP3905SD-30 其它名稱(chēng):LP3905SD-30DKR
A843DSC 制造商:Pentair Technical Products / Hoffman 功能描述:Enclosure, Junction Box, 8.00x4.00x2.75in, Flat Cover, NEMA 4, Mild Steel 制造商:Pentair Technical Products / Hoffman 功能描述:ENCLOSURE JUNCTION BOX STEEL GRAY 制造商:Pentair Technical Products / Hoffman 功能描述:ENCLOSURE, JUNCTION BOX, STEEL, GRAY 制造商:Hoffman Enclosures 功能描述:SCREW COVER DSC ENCLOSURE8 X 4 X 2.75 制造商:Pentair Technical Products / Hoffman 功能描述:ENCLOSURE, JUNCTION BOX, STEEL, GRAY, Enclosure Type:Junction Box, Enclosure Mat 制造商:Pentair Technical Products / Hoffman 功能描述:ENCLOSURE, JUNCTION BOX, STEEL, GRAY, Enclosure Type:Junction Box, Enclosure Material:Steel, Body Color:Grey, External Height - Imperial:8", External Height - Metric:203mm, External Width - Imperial:4", External Width - Metric:102mm , RoHS Compliant: Yes
A844 制造商:TE Connectivity 功能描述:- Bulk
A8447 制造商:ALLEGRO 制造商全稱(chēng):Allegro MicroSystems 功能描述:High Voltage Step Down Regulator
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