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參數資料
| 型號： | LX1741CDUT |
| 廠商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.145 A SWITCHING CONTROLLER, PDSO8 |
| 封裝： | PLASTIC, MSOP-8 |
| 文件頁數： | 8/15頁 |
| 文件大?。?/td> | 459K |
| 代理商： | LX1741CDUT |
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 2
Copyright
2000
Rev. 1.1, 2002-11-21
WWW
.Microse
m
i
.CO
M
LX1741
High Efficiency High Voltage Boost Controller
PRODUCTION DATA SHEET
I N T E GR A T ED
PRO DUC T S
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (VCC)..................................................................................... -0.3V to 7.0V
Feedback Input Voltage (VFB).............................................................. -0.3V to VIN + 0.3V
Shutdown Input Voltage (VSHDN)........................................................ -0.3V to VIN + 0.3V
PWM Input Amplitude......................................................................... -0.3V to VIN + 0.3V
Analog Adjust Input Voltage (VADJ) ................................................................ -0.3V to VIN
Source Input Current (ISRC) ..................................................................................0.80 ARMS
Operating Junction Temperature ................................................................................ 150
°C
Storage Temperature Range ........................................................................ -65
°C to 150°C
Lead Temperature (Soldering 180 seconds)............................................................... 235
°C
Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to
Ground. Currents are positive into, negative out of specified terminal
.
TH ERMAL DATA
DU
Plastic MSOP 8-Pin
THERMAL RESISTANCE
-JUNCTION TO AMBIENT,
θ
JA
206
°C/W
THERMAL RESISTANCE
-JUNCTION TO CASE,
θ
JC
39
°C/W
LM
Plastic MLP 8-Pin
THERMAL RESISTANCE
-JUNCTION TO AMBIENT,
θ
JA
41
°C/W
THERMAL RESISTANCE
-JUNCTION TO CASE,
θ
JC
5.2
°C/W
Junction Temperature Calculation: TJ = TA + (PD x θJC).
The
θJA numbers are guidelines for the thermal performance of the device/pc-board
system. All of the above assume no ambient airflow.
PACKAGE PIN OUT
1
2
4
3
5
6
8
7
SRC
CS
GND
IN
NDRV
FB
ADJ
SHDN
DU PACKAGE
(Top View)
4
3
2
1
5
6
7
8
SRC
CS
GND
SHDN
NDRV
FB
IN
ADJ
LM PACKAGE
(Top View)
FUNCTIONAL PIN DESCRIPTION
NAME
DESCRIPTION
IN
Unregulated IC Supply Voltage Input – Input range from +1.6V to 6.0V. Bypass with a 1
F or greater capacitor
for operation below 2.0V.
FB
Feedback Input – Connect to a resistive divider network between the output and GND to set the voltage at VFB
(see Output Voltage Programming: Application Information).
SHDN
Active-Low Shutdown Input – A logic low shuts down the device and reduces the supply current to 0.1
A.
Connect SHDN to VCC for normal operation.
NDRV
MOSFET Gate Driver – Connects to an external N-Channel MOSFET.
CS
Current-Sense Amplifier Input – Connecting a resistor between CS and GND sets the peak inductor current limit.
GND
Common terminal for ground reference.
ADJ
An applied PWM Signal Input becomes the internal reference, via an internal filter and gain resistor, thus allowing
for a dynamic output voltage adjustment of
±15% (i.e., corresponding to the duty cycle variance). Connecting this
pin to ground causes the device to revert to the internal voltage reference (note: refer to figure 8).
SRC
MOSFET Current Sense Input - Connects to the External N-Channel MOSFET Source.
PP
AA
CC
KK
AA
GG
EE
DD
AA
TT
AA
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相關代理商/技術參數 |
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| LX1741CDU-TR | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:High Efficiency High Voltage Boost Controller |
| LX1741CLM | 功能描述:IC REG CTRLR BST PWM VM 8MLP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標準包裝:2,500 系列:- PWM 型:電流模式 輸出數:1 頻率 - 最大:500kHz 占空比:96% 電源電壓:4 V ~ 36 V 降壓:無 升壓:是 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:24-WQFN 裸露焊盤 包裝:帶卷 (TR) |
| LX1741CLM-TR | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:High Efficiency High Voltage Boost Controller |
| LX1742 | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:High Efficiency High Voltage Boost Controller |
| LX1742 EVAL KIT | 制造商:Microsemi Corporation 功能描述:EVAL KIT FOR LX1742 - Bulk |
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