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LT1935ES5

更新时间: 2024-10-03 05:43:27
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
描述
1.2MHz Boost DC/DC Converter in ThinSOT with 2A Switch

LT1935ES5 技术参数

是否Rohs认证: 不符合生命周期:Transferred
零件包装代码:SOT包装说明:PLASTIC, MO-193, TSOT-23, 5 PIN
针数:5Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.15模拟集成电路 - 其他类型:SWITCHING REGULATOR
控制模式:CURRENT-MODE控制技术:PULSE WIDTH MODULATION
最大输入电压:16 V最小输入电压:2.5 V
标称输入电压:3 VJESD-30 代码:R-PDSO-G5
JESD-609代码:e0长度:2.9 mm
湿度敏感等级:1功能数量:1
端子数量:5最高工作温度:70 °C
最低工作温度:最大输出电流:3.2 A
封装主体材料:PLASTIC/EPOXY封装代码:VSSOP
封装等效代码:TSOP5/6,.11,37封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH峰值回流温度(摄氏度):235
认证状态:Not Qualified座面最大高度:1 mm
子类别:Switching Regulator or Controllers表面贴装:YES
切换器配置:BOOST最大切换频率:1400 kHz
技术:BIPOLAR温度等级:COMMERCIAL
端子面层:Tin/Lead (Sn/Pb)端子形式:GULL WING
端子节距:0.95 mm端子位置:DUAL
处于峰值回流温度下的最长时间:20宽度:1.625 mm
Base Number Matches:1

LT1935ES5 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

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