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LTC3409AIDD#TRPBF PDF预览

LTC3409AIDD#TRPBF

更新时间： 2023-12-18 00:00:00
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
16页 310K
描述
LTC3409A - 600mA Low VIN Buck Regulator in 3mm x 3mm DFN; Package: DFN; Pins: 8; Temperature Range: -40°C to 85°C

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中文翻译

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LTC3409AIDD#TRPBF 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：DFN包装说明：HVSON, SOLCC8,.12,20
针数：8Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.18其他特性：ALSO OPERATES IN ADJUSTABLE MODE FROM 0.62V TO 5.5V
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：1.6 V标称输入电压：2.2 V
JESD-30 代码：S-PDSO-N8JESD-609代码：e3
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：-40 °C
最大输出电流：0.75 A标称输出电压：1.2 V
封装主体材料：PLASTIC/EPOXY封装代码：HVSON
封装等效代码：SOLCC8,.12,20封装形状：SQUARE
封装形式：SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度（摄氏度）：260
认证状态：Not Qualified座面最大高度：0.85 mm
子类别：Switching Regulator or Controllers表面贴装：YES
切换器配置：BUCK最大切换频率：3200 kHz
技术：CMOS温度等级：INDUSTRIAL
端子面层：Matte Tin (Sn)端子形式：NO LEAD
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：30宽度：3 mm
Base Number Matches：1

LTC3409AIDD#TRPBF 数据手册

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LTC3409A  
600mA Low V Buck  
IN  
Regulator in 3mm × 3mm DFN  
FEATURES  
DESCRIPTION  
TheLTC®3409Aisahighefficiency,monolithicsynchronous  
buck regulator using a constant frequency, current mode  
architecture. TheLTC3409AimprovesupontheLTC3409’s  
light load regulation in Burst Mode operation. The output  
voltage is adjusted via an external resistor divider.  
n
1.6V to 5.5V Input Voltage Range  
n
0.62V to 5.5V Output Voltage Range  
n
Internal Soft-Start  
n
Selectable 1.7MHz or 2.6MHz Constant Frequency  
Operation  
n
Internal Oscillator Can Be Synchronized to an  
Fixed switching frequencies of 1.7MHz and 2.6MHz are  
supported. Alternatively, an internal PLL will synchronize  
to an external clock in the frequency range of 1MHz to  
3MHz. This range of switching frequencies allows the  
use of small surface mount inductors and capacitors,  
including ceramics.  
External Clock, 1MHz to 3MHz Range  
n
High Efficiency: Up to 95%  
65μA Quiescent Current, Burst Mode® Operation  
n
n
600mA Output Current (V = 1.8V, V  
750mA Peak Inductor Current  
No Schottky Diode Required  
Low Dropout Operation: 100% Duty Cycle  
0.612V Reference Voltage  
Stable with Ceramic Capacitors  
= 1.2V)  
IN  
OUT  
n
n
n
n
n
n
n
Supply current during Burst Mode operation is only  
65μA dropping to <1μA in shutdown. The 1.6V to 5.5V  
input voltage range makes the LTC3409A ideally suited  
for single cell Li-Ion, Li-Metal and 2-cell alkaline, NiCd  
or NiMH battery-powered applications. 100% duty cycle  
capability provides low dropout operation, extending bat-  
tery life in portable systems. Burst Mode operation can be  
user-enabled, increasing efficiency at light loads, further  
extending battery life.  
Shutdown Mode Draws <1μA Supply Current  
Current Mode Operation for Excellent Line and Load  
Transient Response  
n
n
Overtemperature Protection  
Available in a Low Profile (0.75mm)  
8-Lead (3mm × 3mm) DFN Package  
The internal synchronous switch increases efficiency and  
eliminatestheneedforanexternalSchottkydiode.Internal  
soft-startofferscontrolledoutputvoltagerisetimeatstart-  
up without the need for external components.  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear  
Technology Corporation. All other trademarks are the property of their respective owners.  
Protected by U.S. Patents, including 5481178, 6580258, 6304066, 6127815, 6498466, 6611131.  
APPLICATIONS  
n
Cellular Phones  
n
Digital Cameras  
n
MP3 Players  
TYPICAL APPLICATION  
Burst Mode Efficiency, 1.8VOUT  
High Efficiency Step-Down Converter  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
1
2.5V , BURST  
IN  
LTC3409A  
SW  
2.2μH*  
V
V
0.1  
IN  
1.8V TO 5.5V  
OUT  
1.8V  
V
IN  
10pF  
4.7μF  
22μF  
s2  
RUN  
3.6V , BURST  
IN  
267k  
137k  
MODE  
V
FB  
0.01  
0.001  
0.0001  
4.2V , BURST  
IN  
SYNC GND  
POWER LOST  
3.6V , BURST  
IN  
*SUMIDA CDRH2D18/LD  
3409A TA01  
0
1
10  
100  
1000  
LOAD CURRENT (mA)  
3409A TA01b  
3409af  
1
1234567...16

中文翻译

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