LTC3441EDE

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LTC3441EDE

LTC3441 - SYNCHRONOUS BUCK-BOOST

  • 제조업체
  • Mfr.부분 #LTC3441EDE
  • 패키지 DFN-12
  • 데이터시트
  • 재고 있음6589

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사양

Package Bulk
ProductStatus Obsolete
Function Step-Up/Step-Down
OutputConfiguration Positive
Topology Buck-Boost
OutputType Adjustable
NumberofOutputs 1
Voltage-Input(Min) 2.4V
Voltage-Input(Max) 5.5V
Voltage-Output(Min/Fixed) 2.4V
Voltage-Output(Max) 5.25V
Current-Output 1.2A
Frequency-Switching 1MHz
SynchronousRectifier Yes
OperatingTemperature -40°C ~ 85°C
MountingType Surface Mount
Package/Case 12-WFDFN Exposed Pad

개요

Description

The LTC3441EDE is a high-efficiency, buck-boost DC/DC converter integrated circuit designed by Analog Devices, formerly Linear Technology. This IC is capable of delivering a constant output voltage from inputs that are either higher, lower, or equal to the output voltage, making it versatile for battery-powered applications where the input voltage may vary widely. It operates over a wide input voltage range, typically from 2.4V to 5.5V, and can deliver an output current of up to 600mA.
Key features include a fixed-frequency operation at 1.5MHz, which allows the use of small external components, and a low-noise mode for reduced output voltage ripple. The LTC3441EDE also offers a user-selectable Burst Mode operation to improve efficiency at light loads, as well as a Power Save mode to extend battery life. Its compact, thermally enhanced DFN package makes it suitable for space-constrained applications. Additionally, it provides built-in protection features such as over-temperature protection and current limiting to enhance reliability and safety in various applications.

Features

The LTC3441EDE is a high-efficiency, buck-boost DC/DC converter with the following key features:
1. Wide Input Voltage Range: It operates from 2.4V to 5.5V, making it suitable for single-cell lithium-ion, multi-cell alkaline, or NiMH battery applications.
2. Output Voltage Range: It can deliver an adjustable output voltage between 2.4V and 5.25V.
3. Efficiency: The converter provides high efficiency across a wide range of load conditions, optimizing power usage.
4. Output Current: It is capable of delivering up to 600mA of output current.
5. Automatic Buck-Boost Operation: The device seamlessly transitions between buck and boost modes, ensuring continuous output voltage regulation over a wide range of input voltages.
6. Low Quiescent Current: The LTC3441EDE is designed for low power consumption with a quiescent current of just 25µA, extending battery life.
7. Burst Mode Operation: It features Burst Mode operation for improved efficiency at light loads.
8. Shutdown Mode: The device includes a shutdown mode that reduces supply current to less than 1µA.
9. Package: It is available in a compact 10-lead (3mm x 3mm) DFN package, facilitating space-constrained applications.
These features make the LTC3441EDE suitable for portable electronic devices that require efficient power management across varying input voltages.

Package

The LTC3441EDE is packaged in a 12-lead DFN (Dual Flat No-Lead) package, specifically a 4mm x 3mm DFN.

Pinout

The LTC3441EDE is a high-efficiency, synchronous buck-boost DC/DC converter from Analog Devices. It is designed to provide a regulated output voltage from input voltages above, below, or equal to the output voltage. The LTC3441EDE comes in a 12-lead (pin) DFN (Dual Flat No-Lead) package.
### Pin Count and Functions:
1. V_IN (Pins 1, 2): Input voltage supply.
2. SW (Pins 3, 4): Switch node, connected to the inductor.
3. GND (Pin 5): Ground reference.
4. V_OUT (Pins 6, 7): Output voltage.
5. FB (Pin 8): Feedback input for setting output voltage.
6. MODE/SYNC (Pin 9): Mode selection and synchronization input.
7. RT (Pin 10): Frequency set resistor input.
8. SHDN (Pin 11): Shutdown control input.
9. V_C (Pin 12): Compensation voltage input.
The LTC3441EDE is particularly suitable for battery-powered applications due to its ability to efficiently manage power over a wide range of input and output voltages.

Manufacturer

The manufacturer of the LTC3441EDE is Analog Devices, Inc. Analog Devices is a multinational semiconductor company that specializes in the design and manufacturing of analog, mixed-signal, and digital signal processing integrated circuits. Their products are used in a wide range of electronic equipment, including those in the industrial, automotive, consumer, and communication sectors. Known for innovation, Analog Devices focuses on providing solutions that bridge the physical and digital worlds, offering high-performance signal processing and sensing technologies.

Application

The LTC3441EDE is a high-efficiency, buck-boost DC/DC converter suitable for applications requiring a stable output voltage from a variable input voltage. Its application areas include battery-operated devices, portable electronics, handheld instruments, and wireless communication equipment. The device is ideal for scenarios where the input voltage can be above, below, or equal to the output voltage, ensuring consistent performance across a wide range of power sources.

Equivalent

The LTC3441EDE is a high-efficiency, synchronous buck-boost DC/DC converter. Equivalent products include:
1. Texas Instruments TPS63001 – A buck-boost converter for portable devices.
2. Maxim Integrated MAX1703 – Offers a similar buck-boost function.
3. Analog Devices ADP2503 – Provides step-up and step-down functionality.
4. Microchip MCP1640 – A compact, high-efficiency buck-boost regulator.
These alternatives provide similar power management capabilities, but specific features and specifications should be reviewed to ensure compatibility with your application.

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