參數(shù)資料
型號： A8430EEK
廠商： Allegro MicroSystems, Inc.
元件分類： LED驅(qū)動器
英文描述： White LED Driver Constant Current Step-up Converter
中文描述： 白光LED驅(qū)動恒流升壓轉(zhuǎn)換器
文件頁數(shù)： 2/10頁
文件大小： 329K
代理商： A8430EEK
2
Worcester, Massachusetts 01615-0036 (508) 853-5000
115 Northeast Cutoff, Box 15036
www.allegromicro.com
D
2
A8430
White LED Driver Constant Current Step-up Converter
Characteristics
Symbol
Test Conditions
Min.
Typ.
Max.
Units
Input Voltage Range
V
IN
–
2.5
–
10
V
Supply Current
I
SUP
Active: I
LOAD
= 15 mA,
V
LOAD
= 12 V
Shutdown (EN = 0 V)
–
2.5
3.5
mA
–
0.1
1
μA
Feedback Reference Voltage
V
REF
I
FB
I
SWLIM
F
SW
D
–
86
95
104
mV
Feedback Input Current
–
–
20
75
nA
Switch Current Limit
–
–
300
–
mA
Switch Frequency
–
0.8
1.2
1.6
MHz
Switch Maximum Duty Cycle
–
85
90
–
%
Switch Saturation voltage
V
CE(SAT)
I
SL
–
–
350
–
mV
Switch Leakage Current
–
–
–
5
μA
Enable Input
Input Threshold Low
V
IL
V
IH
–
–
–
0.4
V
Input Threshold High
–
1.5
–
–
V
Input Leakage
Leakage
I
IL
–
–
1
μA
Note 1. Measured with 4-layer PCB. Please refer to application note “Package Thermal Characteristics,“ for thermal perfor-
mance measurement for 3 mm x 3 mm MLP package for additional information.
Functional Block Diagram
VIN
FB
SW
V
REF
1.25 V
GND
Driver
A2
S
Ramp
Generator
1.2 MHz
Oscillator
R
C
C
C
A1
95 mV
Enable
EN
Σ
R
Q
ELECTRICAL CHARACTERISTICS
at T
A
= 25°C, V
IN
= 3 V (unless otherwise noted)
相關(guān)PDF資料
PDF描述
A8430EEK-T White LED Driver Constant Current Step-up Converter
A8431 White LED Driver Constant Current Step-up Converter
A8431EEH-T White LED Driver Constant Current Step-up Converter
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
A8430EEK-T 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:White LED Driver Constant Current Step-up Converter
A8430EEKTR-T 功能描述:IC LED DRVR WHITE BCKLGHT 5-MLPD RoHS:是 類別:集成電路 (IC) >> PMIC - LED 驅(qū)動器 系列:- 標(biāo)準包裝:1 系列:- 恒定電流:- 恒定電壓:- 拓撲:PWM，切換式電容器（充電泵） 輸出數(shù):1 內(nèi)部驅(qū)動器:是 類型 - 主要:背光 類型 - 次要:白色 LED 頻率:642kHz 電源電壓:2.7 V ~ 5.5 V 輸出電壓:5V 安裝類型:表面貼裝 封裝/外殼:10-VFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:10-VSON 包裝:剪切帶 (CT) 工作溫度:-30°C ~ 85°C 產(chǎn)品目錄頁面:1371 (CN2011-ZH PDF) 其它名稱:BD1603NUV-E2CT
A8430EEKTR-T 制造商:Allegro MicroSystems 功能描述:DC-DC Converter IC
A8431 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:White LED Driver Constant Current Step-up Converter
A8431EEH-T 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:White LED Driver Constant Current Step-up Converter
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