參數(shù)資料
型號(hào): MAX1579
廠商: Maxim Integrated Products, Inc.
英文描述: Complete Bias and White LED Power Supplies for Small TFT Displays
中文描述: 可提供完備偏置的白光LED電源,用于TFT顯示器
文件頁(yè)數(shù): 5/13頁(yè)
文件大小: 221K
代理商: MAX1579
Typic al Operating Charac teristic s (c ontinued)
(Circuit of Figure 3, V
IN
= 3.6V, I
LED
= 20mA, 4 LEDs, CTRL = IN, T
A
= +25
°
C, unless otherwise noted.)
M
Complete Bias and White LED Power S upplies
for S mall T FT Displays
_______________________________________________________________________________________
5
PWM-DIMMING WAVEFORMS
M
V
CTRL
I
IN
V
AC-COUPLED
V
IN
AC-COUPLED
2V/div
50mV/div
20mA/div
20mV/div
40
μ
s/div
0
400
200
800
600
1200
1000
1400
0
2
3
1
4
5
LCD BIAS SUPPLY CURRENT
vs. INPUT VOLTAGE
M
INPUT VOLTAGE (V)
I
I
μ
A
V
CTRL
= 0V
LCD BIAS STARTUP SEQUENCE
M
V
ONBIAS
V
POS
V
NEG
V
MAIN
5V/div
5V/div
10V/div
5V/div
10ms/div
BOOST STARTUP AND
SHUTDOWN WAVEFORMS
M
V
CTRL
I
IN
V
OUT
V
IN
AC-COUPLED
2V/div
5V/div
0V
100mA/div
20mV/div
4ms/div
0
5
10
15
20
25
0
40 50
20 30
10
60 70 80 90 100
LED CURRENT vs.
DIRECT-PWM DUTY CYCLE
M
PWM DUTY CYCLE (%)
I
L
f
PWM
= 200Hz TO200kHz
BOOST-SWITCHING WAVEFORMS
M
V
IN
AC-COUPLED
V
LX
V
OUT
AC-COUPLED
20mV/div
10V/div
200mV/div
400ns/div
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PDF描述
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MAX1579ETG+ 功能描述:LED照明驅(qū)動(dòng)器 Cmplete Bias & White LED Power Supply RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N
MAX1579ETG+T 功能描述:LED照明驅(qū)動(dòng)器 Cmplete Bias & White LED Power Supply RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N
MAX1579ETG-T 功能描述:LED照明驅(qū)動(dòng)器 RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N
MAX1579EVKIT 功能描述:LED 照明開(kāi)發(fā)工具 Evaluation Kit for the MAX1579 RoHS:否 制造商:Fairchild Semiconductor 產(chǎn)品:Evaluation Kits 用于:FL7732 核心: 電源電壓:120V 系列: 封裝: