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LTC3405AES6-1.5#TRMPBF

厂商：
Linear
类别：
开关稳压器
包装：
-
封装：
SOT
无铅情况/ROHS：
无铅
描述：
1.5MHz, 300mA Synchronous Step-Do...

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  • 参数
  • 描述
  • 文档
参数 数值
Number of Outputs 1
Vin Min (V) 2.65
Vin Max (V) 5.5
Output Current (A) 0.3
Vout Min (V) 0.8
Frequency (kHz) 1500
Synchronous (yes/no) yes
Packages ThinSOT
Features Burst Mode, Fixed Output
Isupply (mA) 0.02
Ishutdown (uA) 0.1
Monolithic (yes/no) yes
Tracking (yes/no) no
Integrated Inductor (yes/no) no
Switch Current (A) 0.5
Topology Buck
Architecture Constant Frequency Current Mode
Vout Max (V) 6
Vout Maximum VIN
Frequency Adjust Range
Frequency Sync Range
Extended Temp E
Comments Synchronous, 100% Duty Cycle, 95% Efficiency,"A" Version uses All Ceramic Caps
Featured no
Date Added 1984-01-01
Price 1k * $1.67 (LTC3405AES6#TR)
New no

特点
High Efficiency: Up to 96%
Very Low Quiescent Current: Only 20μA During Operation
300mA Output Current at V IN = 3V
2.5V to 5.5V Input Voltage Range
1.5MHz Constant Frequency Operation
No Schottky Diode Required
Low Dropout Operation: 100% Duty Cycle
Stable with Ceramic Capacitors
0.8V Reference Allows Low Output Voltages
Shutdown Mode Draws <1μA Supply Current
±2% Output Voltage Accuracy
Current Mode Operation for Excellent Line and Load Transient Response
Overtemperature Protected
Low Profile (1mm) ThinSOT? Package

典型应用

典型应用

描述
The LTC ? 3405A is a high efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. Supply current during operation is only 20μA and drops to <1μA in shutdown. The 2.5V to 5.5V input voltage range makes the LTC3405A ideally suited for single Li-Ion battery-powered applications. 100% duty cycle provides low dropout operation, extending battery life in portable systems.
Switching frequency is internally set at 1.5MHz, allowing the use of small surface mount inductors and capacitors. The LTC3405A is specifically designed to work well with ceramic output capacitors, achieving very low output voltage ripple and a small PCB footprint.
The internal synchronous switch increases efficiency and eliminates the need for an external Schottky diode. Low output voltages are easily supported with the 0.8V feedback reference voltage. The LTC3405A is available in a low profile (1mm) ThinSOT package.
For fixed 1.5V and 1.8V output versions, refer to the LTC3405A-1.5/LTC3405A-1.8 data sheet.
Protected by U.S. Patents, including 6580258, 5481178.

请选择文档类型：
可靠性数据
文档名称 文档类型 软件 描述
LTC3405AES6-1.5#TRMPBFPDF下载 点击下载 点击下载 R303 Reliability Data
LT Journal
文档名称 文档类型 软件 描述
LTC3405AES6-1.5#TRMPBFPDF下载 点击下载 点击下载 Sep 1999 Micropower 5-Lead SOT-23 Switching Regulators Extend Battery Life in Space-Sensitive Applications
LTspice
文档名称 文档类型 软件 描述
LTC3405AES6-1.5#TRMPBFPDF下载 点击下载 点击下载 LT1615 Demo Circuit - μPower SEPIC Converter (2.5-4.2V to 3.3V @ 50mA)
LTC3405AES6-1.5#TRMPBFPDF下载 点击下载 点击下载 LT1615 Demo Circuit - μPower Step-Up Converter (2.5-4.2V to 20V @ 12mA)
数据表 (英文)
文档名称 文档类型 软件 描述
LTC3405AES6-1.5#TRMPBFPDF下载 点击下载 点击下载 LT1615/LT1615-1 - Micropower Step-Up DC/DC Converters in ThinSOT
设计要点 (英文)
文档名称 文档类型 软件 描述
LTC3405AES6-1.5#TRMPBFPDF下载 点击下载 点击下载 DN231 - Tiny Regulators Drive White LED Backlights
LTC3405AES6-1.5#TRMPBFPDF下载 点击下载 点击下载 DN232 - SOT-23 Switching Regulator with Integrated 1A Switch Delivers High Current Outputs in a Small Footprint
LTC3405AES6-1.5#TRMPBFPDF下载 点击下载 点击下载 DN223 - SOT-23 DC/DC Converters Generate Up to ±35V Outputs and Consume Only 20μA of Quiescent Current
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