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LTC3864EMSE#TRPBF

更新时间： 2024-09-14 21:06:47
品牌 Logo 应用领域
凌特 - Linear 开关光电二极管
页数 文件大小 规格书
30页 692K
描述
LTC3864 - 60V Low IQ Step-Down DC/DC Controller with 100% Duty Cycle Capability; Package: MSOP; Pins: 12; Temperature Range: -40°C to 85°C

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LTC3864EMSE#TRPBF 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：MSOP包装说明：HTSSOP, TSSOP12,.19
针数：12Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：8.45其他特性：ALSO OPERATES AS LDO REGULATOR
模拟集成电路 - 其他类型：SWITCHING CONTROLLER控制模式：CURRENT-MODE
控制技术：PULSE WIDTH MODULATION最大输入电压：60 V
最小输入电压：3.5 V标称输入电压：12 V
JESD-30 代码：R-PDSO-G12JESD-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：12
最高工作温度：125 °C最低工作温度：-40 °C
最大输出电流：0.103 A封装主体材料：PLASTIC/EPOXY
封装代码：HTSSOP封装等效代码：TSSOP12,.19
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：SINGLE
最大切换频率：585 kHz技术：CMOS
温度等级：AUTOMOTIVE端子面层：Matte Tin (Sn)
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：NOT SPECIFIED
宽度：3 mmBase Number Matches：1

LTC3864EMSE#TRPBF 数据手册

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LTC3864  
60V Low I Step-Down  
Q
DC/DC Controller with  
100% Duty Cycle Capability  
DescripTion  
FeaTures  
The LTC®3864 is a robust, high voltage step-down DC/DC  
controller optimized for automotive and industrial applica-  
tions. It drives a P-channel power MOSFET switch allowing  
100% duty cycle operation. The wide input and output volt-  
age ranges cover a multitude of applications. This device  
has been verified with the failure mode and effects analysis  
(FMEA) procedure for operation during failure conditions.  
n
Wide Operating V Range: 3.5V to 60V  
IN  
n
Wide V  
Range: 0.8V to V  
OUT  
IN  
n
n
n
n
n
n
Low Operating I = 40µA  
Q
Very Low Dropout Operation: 100% Duty Cycle  
Strong High Voltage MOSFET Gate Driver  
Constant Frequency Current Mode Architecture  
Verified FMEA for Adjacent Pin Open/Short  
Selectable High Efficiency Burst Mode® Operation or  
Pulse-Skipping Mode at Light Loads  
The LTC3864 offers excellent light load efficiency, draw-  
ing only 40µA quiescent current in a user programmable  
Burst Mode operation. Its peak current mode, constant  
frequency PWM architecture provides for good control of  
switching frequency and output current limit. The switch-  
ing frequency can be programmed from 50kHz to 850kHz  
with an external resistor and can be synchronized to an  
external clock from 75kHz to 750kHz.  
n
n
n
n
n
n
n
n
Programmable Fixed Frequency: 50kHz to 850kHz  
Phase-Lockable Frequency: 75kHz to 750kHz  
Accurate Current Limit  
Programmable Soft-Start or Voltage Tracking  
Internal Soft-Start Guarantees Smooth Start-Up  
Power Good Output Voltage Monitor  
Low Shutdown I = 7µA  
Available in Small 12-Pin Thermally Enhanced MSOP  
and DFN Packages  
Q
The LTC3864 offers programmable soft-start or output  
tracking. Safety features include overvoltage protection,  
overcurrent and short-circuit protection including fre-  
quency foldback and a power good output signal.  
applicaTions  
n
The LTC3864 is available in thermally enhanced 12-Pin  
MSOP and 3mm × 4mm DFN packages.  
L, LT, LTC, LTM, OPTI-LOOP, Linear Technology, Burst Mode and the Linear logo are registered  
trademarks and Hot Swap is a trademark of Linear Technology Corporation. All other trademarks  
are the property of their respective owners. Protected by U.S. Patents including 5731694.  
Industrial and Automotive Power Supplies  
n
Telecom Power Supplies  
n
Distributed Power Systems  
Typical applicaTion  
5.2V to 60V Input, 5V/2A Output, 350kHz Step-Down Converter  
Efficiency  
V
*
IN  
100  
90  
5.2V TO 60V  
10µF  
0.47µF  
V
Burst Mode  
OPERATION  
CAP  
RUN  
IN  
350kHz  
9.09k  
25mΩ  
PLLIN/MODE  
SS  
80  
70  
60  
50  
SENSE  
GATE  
PULSE-SKIPPING  
LTC3864  
3.3nF  
10µH  
V
5V  
2A  
*
OUT  
ITH  
FREQ  
100k  
422k  
47µF  
×2  
V
V
= 12V  
OUT  
IN  
SGND  
= 5V  
PGOOD  
0.01  
0.1  
LOAD CURRENT (A)  
1
V
FB  
PGND  
80.6k  
3864 TA01b  
*V  
FOLLOWS V  
IN  
OUT  
WHEN 3.5V ≤ V ≤ 5.2V  
IN  
3864 TA01a  
3864fa  
1
For more information www.linear.com/LTC3864  
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