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LT1935ES5#TRMPBF

更新时间： 2024-11-30 13:09:39
品牌 Logo 应用领域
凌特 - Linear 转换器开关光电二极管
页数 文件大小 规格书
8页 186K
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LT1935ES5#TRMPBF 数据手册

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LT1935  
1.2MHz Boost DC/DC  
Converter in ThinSOT  
with 2A Switch  
U
FEATURES  
DESCRIPTIO  
The LT®1935 is the industry’s highest power SOT-23  
switching regulator. Its unprecedented 2A, 40V internal  
switch allows high output currents to be generated in a  
small footprint. Intended for space-conscious applica-  
tions, the LT1935 switches at 1.2MHz, allowing the use of  
tiny, low profile inductors and capacitors 2mm or less in  
height. The NPN switch achieves a VCESAT of just 180mV  
at 2A independent of supply voltage, resulting in high  
efficiency even at maximum power levels from a 3V input.  
■
1.2MHz Switching Frequency  
■
High Output Voltage: Up to 38V  
■
Wide Input Range: 2.3V to 16V  
■
Low VCESAT Switch: 180mV at 2A  
■
Soft-Start  
■
Uses Small Surface Mount Components  
■
5V at 1A from 3.3V Input  
■
12V at 600mA from 5V Input  
■
Low Shutdown Current: <1µA  
■
Pin-for-Pin Compatible with the LT1613 and LT1930  
A constant frequency, internally compensated, current  
mode PWM architecture results in low, predictable output  
noisethatiseasytofilter.LowESRceramiccapacitorscan  
be used on the output, further reducing noise to the  
millivolt level. The high voltage switch on the LT1935 is  
rated at 40V, making the device ideal for boost converters  
up to 38V as well as for single-ended primary inductance  
converter (SEPIC) and flyback designs. The device can  
generate5Vatupto1Afroma3.3Vsupplyor5Vat550mA  
from four alkaline cells in a SEPIC design.  
Low Profile (1mm) SOT-23 (ThinSOTTM) Package  
■
U
APPLICATIO S  
■
Digital Cameras  
■
Battery Backup  
■
LCD Bias  
■
Local 5V or 12V Supply  
■
PC Cards  
■
xDSL Power Supply  
■
TFT-LCD Bias Supply  
The LT1935 is available in a 5-lead SOT-23 package.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
ThinSOT is a trademark of Linear Technology Corporation.  
U
TYPICAL APPLICATIO  
Efficiency, VOUT = 12V  
90  
L1  
D1  
4.2µH  
V
OUT  
V
IN  
V
= 5V  
85  
80  
75  
70  
65  
60  
55  
50  
IN  
12V  
5V  
600mA  
V
= 3.3V  
IN  
V
SW  
IN  
84.5k  
10k  
4.7µF  
LT1935  
10µF  
ON OFF  
SHDN  
FB  
GND  
D1: ON SEMI MBRM120  
L1: SUMIDA CDRH5D28-4R2  
1935 F01  
Figure 1. 5V to 12V, 600mA Step-Up DC/DC Converter  
100 200 300 400 500  
LOAD CURRENT (mA)  
700  
0
600  
1935 F01b  
1935f  
1
12345678

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LT1935ES5#TRMPBF 替代型号

型号 品牌 替代类型 描述 数据表
LT1935ES5#TRM Linear

类似代替

 LT1935 - 1.2MHz Boost DC/DC Converter in ThinSOT with 2A Switch; Package: SOT; Pins: 5; Te

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