- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄45008 > LX1742CDU-TR (MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP) SWITCHING REGULATOR, PDSO8 PDF資料下載
參數(shù)資料
| 型號(hào)： | LX1742CDU-TR |
| 廠(chǎng)商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分類(lèi)： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, PDSO8 |
| 封裝： | PLASTIC, MSOP-8 |
| 文件頁(yè)數(shù)： | 12/13頁(yè) |
| 文件大?。?/td> | 456K |
| 代理商： | LX1742CDU-TR |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)當(dāng)前第12頁(yè)第13頁(yè)
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 8
Copyright
2000
Rev. 1.0b, 2005-03-03
WWW
.Microse
m
i
.CO
M
LX1742
High Efficiency High Voltage Boost Controller
PRODUCTION DATA SHEET
I N T E GRA T ED
PR ODUC T S
EVALUATI ON BOA RD
OVERVIEW
The LXE1742 evaluation board is available from
Microsemi for assessing overall circuit performance. The
evaluation board, shown in Figure 5, is 3 by 3 inches (i.e.,
7.6 X 7.6cm) square and factory calibrated to provide a
nominal 18V output from a 1.6V to 6.0V input. Circuit
designers can easily modify the output voltage and peak
current to suit their particular application by adjusting the
R2, R3, and R4 values accordingly.
Further, other
components are easily swapped out to promote design
verification of any particular circuit application. Table 1
describes the evaluation board’s electrical interface.
ELECTRICAL CONNECTIONS
The system level DC input voltage is applied to VIN.
Connect the test load to VOUT. The Vin & GND terminal
at J4 provides easy test point access. A similar connection is
available for monitoring the output voltage via J5. The
output voltage is adjusted by selecting appropriate values for
R3 and R24. Further adjustment of the output voltage is
achieved by applying either a DC voltage or a PWM-type
signal to the ADJ input (J4).
The evaluation board accommodates both low frequency
(f < 100KHz) and high frequency (f > 100KHz) PWM
signals by connecting either JU1 or JU4 jumper position
respectively. The ADJ pin is easily grounded for fixed
voltage applications by inserting a jumper into the JU5
position. Table 2 provides a complete list of all jumper
positions.
Removing the jumper from the /SHDN position disables
the LX1742 by disconnecting pin 4 from VIN. The load is
still capable of drawing current through the inductor & diode
circuit path when the IC is in shutdown mode. Hence,
VOUT during shutdown will be approximately VIN minus
the inductor and diode forward voltage drop.
The LX1742 can achieve output voltages up to 25V. In
certain applications, it is necessary to protect the load from
excessive voltage excursions.
The evaluation board
provides a zener clamp diode (D1) for this purpose.
The LXE1742 evaluation board offers a cost effective
solution for evaluation of the LX1742. Table 3 provides the
factory installed component list for the evaluation board and
the board schematic is shown in Figure 4.
Table 1: Input and Output Pin Assignments
Name
Application
Range
Description
VIN
0 to 6V
Main power supply input for evaluation board
Vin (J4)
0 to 6V
Connected to VIN (Alternate position or test point)
SHDN (J4)
0 to VIN
Pulled up to VCC on board (10K), Ground to inhibit the LX1742.
ADJ (J4)
0 to VIN-
100mV
Apply a DC input or PWM input to adjust the output voltage (note: see figure 9).
GND (J4)
0V
Circuit ground
GND
0V
Additional circuit ground connection point.
FDBK
0 to VIN
Apply a DC input or PWM input to adjust the output voltage.
GND2
0V
Additional circuit ground connection point.
VOUT
VIN to 25V
Output voltage test point. Programmed for 18V output, adjustable up to 25V.
SWITCH
N/A
Test point for lX1742 pin 1.
/SHDN
0 to VIN
A DC voltage above (below) 1.6V (0.4V) enables (disables) the LX172
Note: All pins are referenced to ground.
EE
VV
AA
LL
UU
AA
TT
IIOO
NN
BB
OO
AA
RR
DD
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LX1823IQ | 2 A SWITCHING CONTROLLER, 1500 kHz SWITCHING FREQ-MAX, PQCC20 |
| LX1823IN | 2 A SWITCHING CONTROLLER, 1500 kHz SWITCHING FREQ-MAX, PDIP16 |
| LX1823IJ | 2 A SWITCHING CONTROLLER, 1500 kHz SWITCHING FREQ-MAX, CDIP16 |
| LX1823IJ | 2 A SWITCHING CONTROLLER, 1500 kHz SWITCHING FREQ-MAX, CDIP16 |
| LX1823MJ | 2 A SWITCHING CONTROLLER, 1500 kHz SWITCHING FREQ-MAX, CDIP16 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LX1742EVALKIT | 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:DC:DC Converter |
| LX1744 | 制造商:MICROSEMI 制造商全稱(chēng):Microsemi Corporation 功能描述:Dual Output Boost ? LED Driver / LCD Bias |
| LX1744 EVAL KIT | 制造商:Microsemi Corporation 功能描述:LED BACKLIGHT CONTROLLERS AND DRIVERS - Bulk |
| LX1744CLQ | 功能描述:IC LED DRVR WT/CLR BCKLGT 16MLPQ RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - LED 驅(qū)動(dòng)器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 恒定電流:- 恒定電壓:- 拓?fù)?升壓（升壓），切換式電容器（充電泵） 輸出數(shù):1 內(nèi)部驅(qū)動(dòng)器:是 類(lèi)型 - 主要:背光 類(lèi)型 - 次要:白色 LED 頻率:625kHz ~ 875kHz 電源電壓:2.7 V ~ 5.3 V 輸出電壓:5V 安裝類(lèi)型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:10-µMAX 包裝:帶卷 (TR) 工作溫度:-40°C ~ 85°C |
| LX1744CPW | 功能描述:IC LED DRVR WT/CLR BCKLT 14TSSOP RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - LED 驅(qū)動(dòng)器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 恒定電流:- 恒定電壓:- 拓?fù)?升壓（升壓），切換式電容器（充電泵） 輸出數(shù):1 內(nèi)部驅(qū)動(dòng)器:是 類(lèi)型 - 主要:背光 類(lèi)型 - 次要:白色 LED 頻率:625kHz ~ 875kHz 電源電壓:2.7 V ~ 5.3 V 輸出電壓:5V 安裝類(lèi)型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:10-µMAX 包裝:帶卷 (TR) 工作溫度:-40°C ~ 85°C |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。