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LTC3419IDD-1#PBF PDF预览

LTC3419IDD-1#PBF

更新时间： 2024-09-25 15:38:11
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 260K
描述
LTC3419 - Dual Monolithic 600mA Synchronous Step-Down Regulator; Package: DFN; Pins: 8; Temperature Range: -40°C to 85°C

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LTC3419IDD-1#PBF 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：5.13模拟集成电路 - 其他类型：DUAL SWITCHING CONTROLLER
控制模式：CURRENT-MODE最大输入电压：5.5 V
最小输入电压：2.5 V标称输入电压：3.6 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：125 °C最低工作温度：-40 °C
最大输出电流：1.2 A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：0.8 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：2700 kHz技术：CMOS
温度等级：AUTOMOTIVE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 mmBase Number Matches：1

LTC3419IDD-1#PBF 数据手册

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LTC3419  
Dual Monolithic 600mA  
Synchronous Step-Down  
Regulator  
FEATURES  
DESCRIPTION  
The LTC®3419 is a dual, 2.25MHz, constant-frequency,  
synchronous step-down DC/DC converter in a tiny  
3mm × 3mm DFN package. 100% duty cycle provides  
low dropout operation, extending battery life in portable  
systems. Lowoutputvoltagesaresupportedwiththe0.6V  
feedback reference voltage. Each regulator can supply  
600mA output current.  
n
High Efficiency Dual Step-Down Outputs: Up to 96%  
n
600mA Current per Channel at V = 3V  
IN  
n
Only 35μA Quiescent Current During Operation  
(Both Channels)  
n
2.25MHz Constant-Frequency Operation  
n
2.5V to 5.5V Input Voltage Range  
n
Low Dropout Operation: 100% Duty Cycle  
n
No Schottky Diodes Required  
The input voltage range is 2.5V to 5.5V, making it ideal  
for Li-Ion and USB powered applications. Supply current  
during operation is only 35μA and drops to <1μA in  
shutdown. A user-selectable mode input allows the user  
to trade off between high efficiency Burst Mode operation  
and pulse-skipping mode.  
n
Internally Compensated for All Ceramic Capacitors  
n
Independent Internal Soft-Start for Each Channel  
n
Available in Fixed Output Versions  
n
Current Mode Operation for Excellent Line and Load  
Transient Response  
n
0.6V Reference Allows Low Output Voltages  
User-Selectable Burst Mode® Operation  
n
An internally set 2.25MHz switching frequency allows the  
useoftinysurfacemountinductorsandcapacitors. Internal  
soft-start reduces inrush current during start-up. Both  
outputs are internally compensated to work with ceramic  
outputcapacitors. TheLTC3419isavailableinalowprofile  
(0.75mm)3mm×3mmDFNpackage.TheLTC3419isalso  
available in a fixed output voltage configuration selected  
via internal resistor dividers (see Table 2).  
n
Short-Circuit Protected  
Ultralow Shutdown Current: I < 1μA  
Available in Small MSOP or 3mm × 3mm DFN-8  
Packages  
n
Q
n
APPLICATIONS  
n
Cellular Telephones  
, 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. Protected by U.S. Patents,  
including 5481178, 6127815, 6304066, 6498466, 6580258, 6611131.  
n
Digital Still Cameras  
n
Wireless and DSL Modems  
n
Portable Media Players  
n
PDAs/Palmtop PCs  
Efficiency and Power Loss  
vs Output Current  
TYPICAL APPLICATION  
Dual Monolithic Buck Regulator in 8-Lead 3 × 3 DFN  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
10  
V
= 3.6V  
IN  
V
IN  
2.5V TO 5.5V  
1
10μF  
RUN2  
V
IN  
RUN1  
MODE  
0.1  
LTC3419  
SW2  
SW1  
3.3μH  
22pF  
3.3μH  
22pF  
V
V
OUT1  
OUT2  
2.5V AT  
600mA  
1.8V AT  
600mA  
0.01  
0.001  
0.0001  
V
OUT  
V
OUT  
V
OUT  
= 1.2V  
= 1.8V  
= 2.5V  
V
FB2  
V
FB1  
GND  
118k  
187k  
10μF  
10μF  
59k  
59k  
0.1  
1
10  
100  
1000  
3419 TA01  
OUTPUT CURRENT (mA)  
3419 TA01b  
3419fa  
1
1234567...16

中文翻译

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