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LT1738EG#PBF

更新时间： 2024-10-04 12:59:07
品牌 Logo 应用领域
凌特 - Linear 控制器
页数 文件大小 规格书
20页 249K
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中文翻译

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LT1738EG#PBF 数据手册

 浏览型号LT1738EG#PBF的Datasheet PDF文件第2页浏览型号LT1738EG#PBF的Datasheet PDF文件第3页浏览型号LT1738EG#PBF的Datasheet PDF文件第4页浏览型号LT1738EG#PBF的Datasheet PDF文件第5页浏览型号LT1738EG#PBF的Datasheet PDF文件第6页浏览型号LT1738EG#PBF的Datasheet PDF文件第7页 
LT1738  
Slew Rate Controlled  
Ultralow Noise DC/DC Controller  
U
DESCRIPTIO  
FEATURES  
The LT®1738 is a switching regulator controller designed  
to lower conducted and radiated electromagnetic interfer-  
ence (EMI). Ultralow noise and EMI are achieved by  
controlling the voltage and current slew rates of an exter-  
nal N-channel MOSFET switch. Current and voltage slew  
rates can be independently set to optimize harmonic  
content of the switching waveforms vs efficiency. The  
LT1738 can reduce high frequency harmonic power by as  
much as 40dB with only minor losses in efficiency.  
■
Greatly Reduced Conducted and Radiated EMI  
■
■
Low Switching Harmonic Content  
Independent Control of Output Switch Voltage and  
Current Slew Rates  
■
■
■
■
■
■
Greatly Reduced Need for External Filters  
Single N-Channel MOSFET Driver  
20kHz to 250kHz Oscillator Frequency  
Easily Synchronized to External Clock  
Regulates Positive and Negative Voltages  
Easier Layout Than with Conventional Switchers  
The LT1738 utilizes a current mode architecture opti-  
mized for single switch topologies such as boost, flyback  
and Cuk. The IC includes gate drive and all necessary  
oscillator, control and protection circuitry. Unique error  
amp circuitry can regulate both positive and negative  
voltages. The internal oscillator may be synchronized to  
an external clock for more accurate placement of switch-  
ing harmonics.  
U
APPLICATIO S  
■
Power Supplies for Noise Sensitive Communication  
Equipment  
■
EMI Compliant Offline Power Supplies  
■
Precision Instrumentation Systems  
■
Isolated Supplies for Industrial Automation  
Protection features include gate drive lockout for low VIN,  
soft-start, output current limit, short-circuit current limit-  
ing, gate drive overvoltage clamp and input supply  
undervoltage lockout.  
■
Medical Instruments  
Data Acquisition Systems  
■
, LTC and LT are registered trademarks of Linear Technology Corporation.  
U
TYPICAL APPLICATIO  
Ultralow Noise 5V to 12V Converter  
12V Output Noise  
(Bandwidth = 100MHz)  
MBRD620  
22µH  
10µH  
B
A
5V  
12V  
1A  
V
IN  
+
+
150µF  
OSCON  
4 × 150µF  
OSCON  
P3  
+
OPTIONAL  
100µF  
17  
3
V
IN  
GCL  
5pF  
POINT  
A
14  
2
1
4
400µV  
P-P  
SHDN  
V5  
CAP  
ON SCHEMATIC  
5
6
500µV/DIV  
SYNC  
1.3nF  
7
8
Si9426  
C
T
GATE  
CS  
POINT  
B
LT1738  
16.9k  
ON SCHEMATIC  
50mV/DIV  
R
R
R
V
T
25k 3.3k  
16  
15  
12  
VSL  
CSL  
25mΩ  
25k 3.3k  
22nF  
20  
9
PGND  
FB  
21.5k  
2.5k  
C
1738 TA01a  
5µs/DIV  
0.22µF  
SS GND NFB  
1.5k  
13 11 10  
1738 TA01  
10nF  
1738fa  
1
1234567...20

中文翻译

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LT1738EG#PBF 替代型号

型号 品牌 替代类型 描述 数据表
LT1738IG#PBF Linear

类似代替

 LT1738 - Slew Rate Controlled Ultralow Noise DC/DC Controller; Package: SSOP; Pins: 20; Te
LT1738EG#TRPBF Linear

类似代替

 LT1738 - Slew Rate Controlled Ultralow Noise DC/DC Controller; Package: SSOP; Pins: 20; Te

与LT1738EG#PBF相关器件

型号 品牌 获取价格 描述 数据表
LT1738EG#TR Linear

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 		LT1738 - Slew Rate Controlled Ultralow Noise DC/DC Controller; Package: SSOP; Pins: 20; Te
LT1738EG#TRPBF Linear

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 		LT1738 - Slew Rate Controlled Ultralow Noise DC/DC Controller; Package: SSOP; Pins: 20; Te
LT1738IG Linear

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 		Slew Rate Controlled Ultralow Noise DC/DC Controller
LT1738IG#PBF Linear

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 		LT1738 - Slew Rate Controlled Ultralow Noise DC/DC Controller; Package: SSOP; Pins: 20; Te
LT1738IG#TR Linear

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 		LT1738 - Slew Rate Controlled Ultralow Noise DC/DC Controller; Package: SSOP; Pins: 20; Te
LT1738IG#TRPBF Linear

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 		LT1738 - Slew Rate Controlled Ultralow Noise DC/DC Controller; Package: SSOP; Pins: 20; Te
LT1739 Linear

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 		Dual 500mA, 200MHz xDSL Line Driver Amplifier
LT1739 ADI

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 		双通道 500mA、200MHz xDSL 线路驱动器放大器
LT1739CFE Linear

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 		Dual 500mA, 200MHz xDSL Line Driver Amplifier
LT1739CFE#PBF Linear

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 		LT1739 - Dual 500mA, 200MHz xDSL Line Driver Amplifier; Package: TSSOP; Pins: 20; Temperat

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