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LTC3809EMSE PDF预览

LTC3809EMSE

更新时间： 2024-09-23 05:43:55
品牌 Logo 应用领域
凌特 - Linear 稳压器开关式稳压器或控制器电源电路电阻器开关式控制器光电二极管
页数 文件大小 规格书
24页 286K
描述
No RSENSE™, Low EMI, Synchronous DC/DC Controller

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中文翻译

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LTC3809EMSE 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：HTSSOP, TSSOP10,.19,20
针数：10Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.16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：9.8 V最小输入电压：2.75 V
标称输入电压：4.2 VJESD-30 代码：S-PDSO-G10
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：10最高工作温度：70 °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：HTSSOP
封装等效代码：TSSOP10,.19,20封装形状：SQUARE
封装形式：SMALL OUTLINE, HEAT SINK/SLUG, 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：PUSH-PULL最大切换频率：825 kHz
技术：CMOS温度等级：COMMERCIAL
端子面层：Tin/Lead (Sn/Pb)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：20宽度：3 mm
Base Number Matches：1

LTC3809EMSE 数据手册

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LTC3809  
No RSENSE™, Low EMI,  
Synchronous DC/DC Controller  
FEATURES  
DESCRIPTION  
TheLTC®3809isasynchronousstep-downswitchingregu-  
latorcontrollerthatdrivesexternalcomplementarypower  
MOSFETs using few external components. The constant  
n
No Current Sense Resistor Required  
n
Selectable Spread Spectrum Frequency Modulation  
for Low Noise Operation  
n
Constant Frequency Current Mode Operation for  
frequency current mode architecture with MOSFET V  
DS  
Excellent Line and Load Transient Response  
sensing eliminates the need for a current sense resistor  
n
True PLL for Frequency Locking or Adjustment  
and improves efficiency.  
(Frequency Range: 250kHz to 750kHz)  
Fornoisesensitiveapplications,theLTC3809canbeexter-  
nallysynchronizedfrom250kHzto750kHz. BurstModeis  
inhibitedduringsynchronizationorwhentheSYNC/MODE  
pin is pulled low to reduce noise and RF interference. To  
further reduce EMI, the LTC3809 incorporates a novel  
spread spectrum frequency modulation technique.  
n
Wide V Range: 2.75V to 9.8V  
IN  
OUT  
n
n
n
n
Wide V  
Range: 0.6V to V  
IN  
0.6V 1.5% Reference  
Low Dropout Operation: 100% Duty Cycle  
Selectable Burst Mode®/Pulse-Skipping/Forced  
Continuous Operation  
n
n
n
n
n
Burst Mode operation provides high efficiency operation  
at light loads. 100% duty cycle provides low dropout  
operation, extending operating time in battery-powered  
systems.  
Auxiliary Winding Regulation  
Internal Soft-Start Circuitry  
Output Overvoltage Protection  
Micropower Shutdown: I = 9μA  
Q
Tiny Thermally Enhanced Leadless (3mm × 3mm)  
Theswitchingfrequencycanbeprogrammedupto750kHz,  
allowing the use of small surface mount inductors and  
capacitors.  
DFN and 10-lead MSOP Packages  
APPLICATIONS  
The LTC3809 is available in tiny footprint thermally  
enhanced DFN and 10-lead MSOP packages.  
n
1- or 2-Cell Lithium-Ion Powered Devices  
Portable Instruments  
L, LT, LTC, LTM and Burst Mode are registered trademarks of Linear Technology Corporation.  
n
No R  
is a trademark of Linear Technology Corporation.  
SENSE  
n
All other trademarks are the property of their respective owners.  
Protected by U.S. Patents including 5481178, 5929620, 6580258, 6304066, 5847554,  
6611131, 6498466. Other Patents pending.  
Distributed DC Power Systems  
TYPICAL APPLICATION  
Efficiency and Power Loss vs Load Current  
100  
90  
80  
70  
60  
50  
10k  
EFFICIENCY  
High Efficiency, 550kHz Step-Down Converter  
V
IN  
= 3.3V  
1k  
V
IN  
2.75V TO 9.8V  
V
IN  
= 4.2V  
V
IN  
= 5V  
10μF  
LTC3809  
100  
10  
V
IN  
PLLLPF  
POWER LOSS  
= 4.2V  
SYNC/MODE TG  
V
IN  
59k  
2.2μH  
47μF  
V
2.5V  
2A  
OUT  
V
SW  
FB  
15k  
1
I
TH  
BG  
187k  
FIGURE 10 CIRCUIT  
RUN  
IPRG  
470pF  
V
OUT  
= 2.5V  
GND  
0.1  
10000  
1
10  
100  
1000  
LOAD CURRENT (mA)  
3809 TA01b  
3809 TA01  
3809fc  
1
1234567...24

中文翻译

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与LTC3809EMSE相关器件

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LTC3809EMSE#PBF Linear

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 		LTC3809 - No Rsense, Low EMI, Synchronous DC/DC Controller; Package: MSOP; Pins: 10; Tempe
LTC3809EMSE#TR Linear

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 		LTC3809 - No Rsense, Low EMI, Synchronous DC/DC Controller; Package: MSOP; Pins: 10; Tempe
LTC3809EMSE#TRPBF Linear

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 		LTC3809 - No Rsense, Low EMI, Synchronous DC/DC Controller; Package: MSOP; Pins: 10; Tempe
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 		No RSENSETM, Low Input Voltage, Synchronous DC/DC Controller with Output Tracking
LTC3809EMSE-1#PBF Linear

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 		LTC3809-1 - No Rsense, Low Input Voltage, Synchronous DC/DC Controller with Output Trackin
LTC3809EMSE-1#TR Linear

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 		LTC3809-1 - No Rsense, Low Input Voltage, Synchronous DC/DC Controller with Output Trackin
LTC3809EMSE-1#TRPBF Linear

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 		LTC3809-1 - No Rsense, Low Input Voltage, Synchronous DC/DC Controller with Output Trackin
LTC3809EMSE-1-PBF Linear

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 		No RSENSETM, Low Input Voltage, Synchronous DC/DC Controller with Output Tracking
LTC3809EMSE-1-TR Linear

获取价格

 		No RSENSETM, Low Input Voltage, Synchronous DC/DC Controller with Output Tracking
LTC3809EMSE-1-TRPBF Linear

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 		No RSENSETM, Low Input Voltage, Synchronous DC/DC Controller with Output Tracking

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