參數(shù)資料
型號(hào)： A8438
廠商： 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)： 2/13頁(yè)
文件大?。?/td> 528K
代理商： A8438
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
2
Functional Block Diagram
VIN
VIN
SW
CHARGE
GND
CMP2
ILIM
DONE
FB
Q
I
LIM
Decoder
Adjustable
Reference
IGBTDRV
TRIGGER
1.2 V
40 V
DMOS
Q
Q
SET
CLR
S
R
Q
Q
SET
CLR
S
R
CMP3
CMP1
1.2 V
I
LIM
Comparator
CoDCM
H
→
L
Triggered Timer
Control Logic
Enable
18 μs
One-Shot
Terminal List Table
Ab so ute Max mum Rat ngs
Input or Output Voltage
SW pin, V
SW
............................................................
–0.3 to 40 V
IGBTDRV pin, V
IGBTDRV
..............................
–0.3 to V
IN
+ 0.3 V
FB pin, V
FB
...............................................................
–0.3 to V
IN
All other pins, V
x
......................................................
–0.3 to 7 V
Operating Ambient Temperature, T
A
................................
–40°C to 85°C
Maximum Junction Temperature, T
J(max)
........................................
150°C
Storage Temperature, T
S
..............................................
–55°C to 150°C
10
9
8
7
6
ILIM
FB
DONE
TRIGGER
SW
1
2
3
4
5
NC
IGBTDRV
VIN
GND
CHARGE
Device Pin-out Diagram
R
θ
JA
= 45 °C/W, on a 4-layer board. Additional information is
available on the Allegro Web site.
Package Thermal Characteristics
Number
1
Name
NC
Function
No connection
2
IGBTDRV
IGBT driver gate drive output
3
VIN
Power supply input
4
GND
Device ground
5
CHARGE
Charging enable; set to low to
power-off the A8438
6
SW
Switch, internally connected to the
DMOS power FET drain
7
TRIGGER
Strobe signal input
8
ˉD ˉO ˉN ˉˉ
Open drain, when pulled low by
internal MOSFET, indicates that
charging target level has been
reached
9
FB
Output voltage feedback
10
ILIM
Switch current limit setting; sets
three discreet levels
相關(guān)PDF資料
PDF描述
A8438EEJTR-T Photoflash Capacitor Charger with IGBT Driver
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
A8438_06 制造商:ALLEGRO 制造商全稱(chēng):Allegro MicroSystems 功能描述:Photoflash Capacitor Charger with IGBT Driver
A8438_13 制造商:ALLEGRO 制造商全稱(chēng):Allegro MicroSystems 功能描述:Photoflash Capacitor Charger with IGBT Driver
A8438EEJTR-T 功能描述:IC PHOTOFLASH CHARGER 10-MLP RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 電源管理 - 專(zhuān)用 系列:- 應(yīng)用說(shuō)明:Ultrasound Imaging Systems Application Note 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:37 系列:- 應(yīng)用:醫(yī)療用超聲波成像，聲納 電流 - 電源:- 電源電壓:2.37 V ~ 6 V 工作溫度:0°C ~ 70°C 安裝類(lèi)型:表面貼裝 封裝/外殼:56-WFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:56-TQFN-EP（8x8） 包裝:管件
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
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