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LT3990EMSE-5#TRPBF

更新时间： 2023-02-26 13:30:03
品牌 Logo 应用领域
亚德诺 - ADI 开关光电二极管
页数 文件大小 规格书
22页 299K
描述
LT3990 - 62V, 350mA Step-Down Regulator with 2.5µA Quiescent Current and Integrated Diodes; Package: MSOP; Pins: 16; Temperature Range: -40°C to 85°C

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LT3990EMSE-5#TRPBF 技术参数

是否无铅：含铅是否Rohs认证：符合
生命周期：Active包装说明：HTSSOP,
针数：16Reach Compliance Code：compliant
风险等级：5.57Is Samacsys：N
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：62 V
最小输入电压：4.2 V标称输入电压：12 V
JESD-30 代码：R-PDSO-G16JESD-609代码：e3
长度：4.039 mm湿度敏感等级：1
功能数量：1端子数量：16
最高工作温度：125 °C最低工作温度：-40 °C
最大输出电流：0.865 A标称输出电压：5 V
封装主体材料：PLASTIC/EPOXY封装代码：HTSSOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：NOT SPECIFIED座面最大高度：1.1 mm
表面贴装：YES切换器配置：BUCK
最大切换频率：2760 kHz温度等级：AUTOMOTIVE
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：0.5 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：3 mm
Base Number Matches：1

LT3990EMSE-5#TRPBF 数据手册

 浏览型号LT3990EMSE-5#TRPBF的Datasheet PDF文件第2页浏览型号LT3990EMSE-5#TRPBF的Datasheet PDF文件第3页浏览型号LT3990EMSE-5#TRPBF的Datasheet PDF文件第4页浏览型号LT3990EMSE-5#TRPBF的Datasheet PDF文件第5页浏览型号LT3990EMSE-5#TRPBF的Datasheet PDF文件第6页浏览型号LT3990EMSE-5#TRPBF的Datasheet PDF文件第7页 
LT3990/LT3990-3.3/LT3990-5  
62V, 350mA Step-Down  
Regulator with 2.5µA  
Quiescent Current and  
Integrated Diodes  
FEATURES  
DESCRIPTION  
Low Ripple Burst Mode® Operation  
The LT®3990 is an adjustable frequency monolithic buck  
switching regulator that accepts a wide input voltage  
range up to 62V, and consumes only 2.5µA of quiescent  
current. A high efficiency switch is included on the die  
along with the catch diode, boost diode, and the neces-  
saryoscillator, controlandlogiccircuitry. LowrippleBurst  
Mode operation maintains high efficiency at low output  
currents while keeping the output ripple below 5mV in a  
typical application. Current mode topology is used for fast  
transient response and good loop stability. A catch diode  
current limit provides protection against shorted outputs  
and overvoltage conditions. An accurate programmable  
undervoltage lockout feature is available, producing a low  
shutdowncurrentof0.7µA.Apowergoodflagsignalswhen  
n
2.5µA I at 12V to 3.3V  
Q
IN  
OUT  
Output Ripple < 5mV  
P-P  
n
n
n
n
n
Wide Input Voltage Range: 4.2V to 62V Operating  
Adjustable Switching Frequency: 200kHz to 2.2MHz  
Integrated Boost and Catch Diodes  
350mA Output Current  
Fixed Output Voltages: 3.3V, 5V  
2µA I at 12V  
Q
IN  
n
n
Accurate Programmable Undervoltage Lockout  
FMEA Fault Tolerant (MSOP Package)  
OutputStaysatorBelowRegulationVoltageDuring  
Adjacent Pin Short or When a Pin is Left Floating  
n
n
n
n
Low Shutdown Current: I = 0.7µA  
Q
Internal Sense Limits Catch Diode Current  
Power Good Flag  
Small, Thermally Enhanced 16-Pin MSOP  
and (3mm × 3mm) DFN Packages  
V
reaches90%oftheprogrammedoutputvoltage.The  
OUT  
LT3990 is available in small, thermally enhanced 16-pin  
MSOP and 3mm × 3mm DFN packages.  
L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks  
of Linear Technology Corporation. All other trademarks are the property of their respective  
owners.  
APPLICATIONS  
n
Automotive Battery Regulation  
n
Power for Portable Products  
n
Industrial Supplies  
TYPICAL APPLICATION  
Power Loss  
1000  
V
= 12V  
IN  
5V Step-Down Converter  
100  
10  
V
IN  
6.5V TO 62V  
0.22µF  
33µH  
V
BOOST  
LT3990-5  
EN/UVLO SW  
IN  
V
OUT  
5V  
OFF ON  
1
350mA  
PG  
BD  
0.1  
RT  
V
OUT  
22µF  
2.2µF  
GND  
374k  
f = 400kHz  
0.01  
3990 TA01a  
0.001 0.01  
0.1  
1
10  
100  
LOAD CURRENT (mA)  
3990 TA01b  
3990fa  
1
1234567...22

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