Allicdata Part #: | LT3487EDD#TRPBFTR-ND |
Manufacturer Part#: |
LT3487EDD#TRPBF |
Price: | $ 0.00 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | Linear Technology/Analog Devices |
Short Description: | IC REG MULT CONFIG INV ADJ 10DFN |
More Detail: | Boost, Charge Pump, Cuk Switching Regulator IC Pos... |
DataSheet: | LT3487EDD#TRPBF Datasheet/PDF |
Quantity: | 1000 |
Voltage - Output (Min/Fixed): | 1.23V |
Base Part Number: | LT3487 |
Supplier Device Package: | 10-DFN (3x3) |
Package / Case: | 10-WFDFN Exposed Pad |
Mounting Type: | Surface Mount |
Operating Temperature: | -40°C ~ 85°C (TA) |
Synchronous Rectifier: | No |
Frequency - Switching: | 2MHz |
Current - Output: | 750mA (Switch), 900mA (Switch) |
Voltage - Output (Max): | 28V |
Series: | -- |
Voltage - Input (Max): | 16V |
Voltage - Input (Min): | 2.3V |
Number of Outputs: | 2 |
Output Type: | Adjustable |
Topology: | Boost, Charge Pump, Cuk |
Output Configuration: | Positive and Negative (Dual Rail) |
Function: | Step-Up, Step-Up/Step-Down |
Part Status: | Active |
Packaging: | Tape & Reel (TR) |
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LT3487EDD#TRPBF Application Field and Working Principle
The LT3487EDD#TRPBF is a very efficient step-down power regulator from Linear Technology. It is a DC-DC buck converter incorporating a low Rds(on) switch, enabling a supply current up to 5A and a very small, lightweight package. It is suitable for a wide range of applications including MIL-STD-461E, military RF, and EMI sensitive systems, making it perfect for use in demanding high power and low noise environment.
Overview
The LT3487EDD#TRPBF is designed to provide high efficiency even at low load currents. It utilizes an adaptive on-time control architecture to maximize efficiency while minimizing switching losses. This solution offers excellent load and line transient response, low output ripple, and wide input range. It also offers a high peak current mode to ensure a fast load step response.
Key Features
- Wide 2.3V to 28V Input Voltage Range
- Output Voltage Range from 0.6V to 12V
- High Efficiency of up to 95%, Lowering Thermal Stress
- Minimum Shutdown Current of 1µA
- Excellent Load and Line Transient Response
- Wide Operating Temperature Range from -40°C to 125°C
Applications
- High Efficiency DC-DC Power Conversion
- Wide Applicable Input Voltage Range
- Overvoltage and Undervoltage Protection
- Long Battery Operation
- Communications Systems
- Medical Equipment & Industrial Equipment
Working Principle
The LT3487EDD#TRPBF is built around patented on-time and power-tracking control techniques. At the start of each cycle, the on-time for the switch is determined by an internal oscillator and a comparator circuit with a reference voltage derived from the output voltage and the external feedback resistor ratio. The switch is then turned on and the output voltage is monitored by the power-tracking comparator. As the input voltage rises, the switch on-time is automatically reduced, increasing efficiency. This process is repeated until the desired output voltage is achieved.
Conclusion
The LT3487EDD#TRPBF is a very efficient switching regulator, ideal for applications where space and power dissipation are at a premium. It also offers excellent load and line transient response and wide input voltage, making it suitable for a range of demanding applications.
The specific data is subject to PDF, and the above content is for reference
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