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Datasheet > LTC3499EMS8#TR
LTC3499EMS8#TR PDF预览

LTC3499EMS8#TR

更新时间： 2024-11-19 20:45:39
品牌 Logo 应用领域
凌特 - Linear 电池开关光电二极管
页数 文件大小 规格书
16页 216K
描述
LTC3499 - 750mA Synchronous Step-Up DC/DC Converters with Reverse-Battery Protection; Package: MSOP; Pins: 8; Temperature Range: -40°C to 85°C

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中文翻译

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LTC3499EMS8#TR 技术参数

是否Rohs认证： 不符合生命周期：Transferred
零件包装代码：MSOP包装说明：TSSOP, TSSOP8,.19
针数：8Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.14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：5.5 V最小输入电压：1.8 V
标称输入电压：2.4 VJESD-30 代码：S-PDSO-G8
JESD-609代码：e0长度：3 mm
湿度敏感等级：1功能数量：1
端子数量：8最高工作温度：85 °C
最低工作温度：最大输出电流：1 A
封装主体材料：PLASTIC/EPOXY封装代码：TSSOP
封装等效代码：TSSOP8,.19封装形状：SQUARE
封装形式：SMALL OUTLINE, 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：1.1 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：CMOS温度等级：OTHER
端子面层：Tin/Lead (Sn/Pb)端子形式：GULL WING
端子节距：0.65 mm端子位置：DUAL
处于峰值回流温度下的最长时间：20宽度：3 mm
Base Number Matches：1

LTC3499EMS8#TR 数据手册

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LTC3499/LTC3499B  
750mA Synchronous  
Step-Up DC/DC Converters  
with Reverse-Battery Protection  
FEATURES  
DESCRIPTION  
TheLTC®3499/LTC3499Baresynchronous,fixedfrequency  
step-up DC/DC power converters with integrated reverse  
battery protection that protect and disconnect the devices  
and load when the battery polarity is reversed while  
delivering high efficiency in a small (3mm × 3mm) DFN  
package. Trueoutputdisconnecteliminatesinrushcurrent  
and allows zero load current in shutdown.  
n
Reverse-Battery Protection for DC/DC Converter  
and Load  
n
High Efficiency: Up to 94%  
n
Generates 5V at 175mA from a 1.8V Input  
n
Operates from 1.8V to 5.5V Input Supply  
n
2V to 6V Adjustable Output Voltage  
n
Inrush Current Controlled During Start-Up  
n
Output Disconnnect in Shutdown  
The devices feature an input voltage range of 1.8V to 5.5V  
enablingoperationfromtwoalkalineorNiMHbatteries.The  
switching frequency is internally set at 1.2MHz allowing  
the use of tiny surface mount inductors and capacitors.  
A minimal number of external components are required  
to generate output voltages ranging from 2V to 6V. The  
LTC3499 features automatic Burst Mode operation to  
increase efficiency at light loads, while the LTC3499B  
features continuous switching at light loads.  
n
Low Noise 1.2MHz PWM Operation  
n
Tiny External Components  
Automatic Burst Mode® Operation (LTC3499)  
n
n
Continuous Switching at Light Loads (LTC3499B)  
n
Overvoltage Protection  
n
8-Lead (3mm × 3mm × 0.75mm) DFN  
and MSOP Packages  
APPLICATIONS  
The soft-start time is externally programmable through a  
small capacitor. Anti-ring circuitry reduces EMI emissions  
by damping the inductor in discontinuous mode. The  
devices feature <1μA shutdown supply current, integrated  
overvoltage protection and are available in both 8-pin  
(3mm × 3mm) DFN and 8-pin MSOP packages.  
n
Medical Equipment  
n
Digital Cameras  
n
MP3 Players  
Handheld Instruments  
n
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
Burst Mode is a registered trademark of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
TYPICAL APPLICATION  
Two AA Cells to 5V Synchronous Boost Converter  
Battery Current vs VIN  
4.7μH  
1.0  
V
IN  
1.8V TO 3.2V  
SHDN = 0V  
OUT  
V
= 0V  
+
V
SW  
OUT  
FB  
2.2μF  
IN  
0.5  
0
LTC3499  
V
OUT  
V
5V  
ON OFF  
SHDN  
VC  
175mA  
1M  
10μF  
100k  
330pF  
SS  
GND  
324k  
–0.5  
–1.0  
0.01μF  
3499 TA01  
–6  
–4  
–2  
0
2
4
6
V
AND SW VOLTAGE (V)  
IN  
3499 TA01b  
3499fb  
1
1234567...16

中文翻译

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LTC3499EMS8#TR 替代型号

型号 品牌 替代类型 描述 数据表
LTC3499EMS8 Linear

完全替代

 750mA Synchronous Step-Up DC/DC Converters with Reverse-Battery Protection
LTC3499BEMS8 Linear

完全替代

 750mA Synchronous Step-Up DC/DC Converters with Reverse-Battery Protection
LTC3499BEMS8#PBF Linear

功能相似

 LTC3499 - 750mA Synchronous Step-Up DC/DC Converters with Reverse-Battery Protection; Pack

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